diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 025183d..291a4cf 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -44,18 +44,18 @@
  * } SupportedVersions;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_supported_versions_ext( mbedtls_ssl_context *ssl,
-                                                   unsigned char *buf,
-                                                   unsigned char *end,
-                                                   size_t *out_len )
+static int ssl_tls13_write_supported_versions_ext(mbedtls_ssl_context *ssl,
+                                                  unsigned char *buf,
+                                                  unsigned char *end,
+                                                  size_t *out_len)
 {
     unsigned char *p = buf;
-    unsigned char versions_len = ( ssl->handshake->min_tls_version <=
-                                   MBEDTLS_SSL_VERSION_TLS1_2 ) ? 4 : 2;
+    unsigned char versions_len = (ssl->handshake->min_tls_version <=
+                                  MBEDTLS_SSL_VERSION_TLS1_2) ? 4 : 2;
 
     *out_len = 0;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding supported versions extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello, adding supported versions extension"));
 
     /* Check if we have space to write the extension:
      * - extension_type         (2 bytes)
@@ -63,10 +63,10 @@
      * - versions_length        (1 byte )
      * - versions               (2 or 4 bytes)
      */
-    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 5 + versions_len );
+    MBEDTLS_SSL_CHK_BUF_PTR(p, end, 5 + versions_len);
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS, p, 0 );
-    MBEDTLS_PUT_UINT16_BE( versions_len + 1, p, 2 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS, p, 0);
+    MBEDTLS_PUT_UINT16_BE(versions_len + 1, p, 2);
     p += 4;
 
     /* Length of versions */
@@ -76,59 +76,56 @@
      * They are defined by the configuration.
      * Currently, we advertise only TLS 1.3 or both TLS 1.3 and TLS 1.2.
      */
-    mbedtls_ssl_write_version( p, MBEDTLS_SSL_TRANSPORT_STREAM,
-                               MBEDTLS_SSL_VERSION_TLS1_3 );
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "supported version: [3:4]" ) );
+    mbedtls_ssl_write_version(p, MBEDTLS_SSL_TRANSPORT_STREAM,
+                              MBEDTLS_SSL_VERSION_TLS1_3);
+    MBEDTLS_SSL_DEBUG_MSG(3, ("supported version: [3:4]"));
 
 
-    if( ssl->handshake->min_tls_version <= MBEDTLS_SSL_VERSION_TLS1_2 )
-    {
-        mbedtls_ssl_write_version( p + 2, MBEDTLS_SSL_TRANSPORT_STREAM,
-                                   MBEDTLS_SSL_VERSION_TLS1_2 );
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "supported version: [3:3]" ) );
+    if (ssl->handshake->min_tls_version <= MBEDTLS_SSL_VERSION_TLS1_2) {
+        mbedtls_ssl_write_version(p + 2, MBEDTLS_SSL_TRANSPORT_STREAM,
+                                  MBEDTLS_SSL_VERSION_TLS1_2);
+        MBEDTLS_SSL_DEBUG_MSG(3, ("supported version: [3:3]"));
     }
 
     *out_len = 5 + versions_len;
 
     mbedtls_ssl_tls13_set_hs_sent_ext_mask(
-        ssl, MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS );
+        ssl, MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS);
 
-    return( 0 );
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_supported_versions_ext( mbedtls_ssl_context *ssl,
-                                                   const unsigned char *buf,
-                                                   const unsigned char *end )
+static int ssl_tls13_parse_supported_versions_ext(mbedtls_ssl_context *ssl,
+                                                  const unsigned char *buf,
+                                                  const unsigned char *end)
 {
     ((void) ssl);
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( buf, end, 2 );
-    if( mbedtls_ssl_read_version( buf, ssl->conf->transport ) !=
-          MBEDTLS_SSL_VERSION_TLS1_3 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "unexpected version" ) );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(buf, end, 2);
+    if (mbedtls_ssl_read_version(buf, ssl->conf->transport) !=
+        MBEDTLS_SSL_VERSION_TLS1_3) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("unexpected version"));
 
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                                      MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
-        return( MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+                                     MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
     }
 
-    if( &buf[2] != end )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "supported_versions ext data length incorrect" ) );
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
-                                      MBEDTLS_ERR_SSL_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_DECODE_ERROR );
+    if (&buf[2] != end) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("supported_versions ext data length incorrect"));
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
+                                     MBEDTLS_ERR_SSL_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_SSL_ALPN)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_alpn_ext( mbedtls_ssl_context *ssl,
-                                     const unsigned char *buf, size_t len )
+static int ssl_tls13_parse_alpn_ext(mbedtls_ssl_context *ssl,
+                                    const unsigned char *buf, size_t len)
 {
     const unsigned char *p = buf;
     const unsigned char *end = buf + len;
@@ -136,8 +133,9 @@
     const unsigned char *protocol_name_list_end;
 
     /* If we didn't send it, the server shouldn't send it */
-    if( ssl->conf->alpn_list == NULL )
-        return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+    if (ssl->conf->alpn_list == NULL) {
+        return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+    }
 
     /*
      * opaque ProtocolName<1..2^8-1>;
@@ -149,66 +147,61 @@
      * the "ProtocolNameList" MUST contain exactly one "ProtocolName"
      */
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    protocol_name_list_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    protocol_name_list_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, protocol_name_list_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, protocol_name_list_len);
     protocol_name_list_end = p + protocol_name_list_len;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, protocol_name_list_end, 1 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, protocol_name_list_end, 1);
     protocol_name_len = *p++;
 
     /* Check that the server chosen protocol was in our list and save it */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, protocol_name_list_end, protocol_name_len );
-    for( const char **alpn = ssl->conf->alpn_list; *alpn != NULL; alpn++ )
-    {
-        if( protocol_name_len == strlen( *alpn ) &&
-            memcmp( p, *alpn, protocol_name_len ) == 0 )
-        {
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, protocol_name_list_end, protocol_name_len);
+    for (const char **alpn = ssl->conf->alpn_list; *alpn != NULL; alpn++) {
+        if (protocol_name_len == strlen(*alpn) &&
+            memcmp(p, *alpn, protocol_name_len) == 0) {
             ssl->alpn_chosen = *alpn;
-            return( 0 );
+            return 0;
         }
     }
 
-    return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+    return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
 }
 #endif /* MBEDTLS_SSL_ALPN */
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_reset_key_share( mbedtls_ssl_context *ssl )
+static int ssl_tls13_reset_key_share(mbedtls_ssl_context *ssl)
 {
     uint16_t group_id = ssl->handshake->offered_group_id;
 
-    if( group_id == 0 )
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    if (group_id == 0) {
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
+    }
 
 #if defined(MBEDTLS_ECDH_C)
-    if( mbedtls_ssl_tls13_named_group_is_ecdhe( group_id ) )
-    {
+    if (mbedtls_ssl_tls13_named_group_is_ecdhe(group_id)) {
         int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
         psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
         /* Destroy generated private key. */
-        status = psa_destroy_key( ssl->handshake->ecdh_psa_privkey );
-        if( status != PSA_SUCCESS )
-        {
-            ret = psa_ssl_status_to_mbedtls( status );
-            MBEDTLS_SSL_DEBUG_RET( 1, "psa_destroy_key", ret );
-            return( ret );
+        status = psa_destroy_key(ssl->handshake->ecdh_psa_privkey);
+        if (status != PSA_SUCCESS) {
+            ret = psa_ssl_status_to_mbedtls(status);
+            MBEDTLS_SSL_DEBUG_RET(1, "psa_destroy_key", ret);
+            return ret;
         }
 
         ssl->handshake->ecdh_psa_privkey = MBEDTLS_SVC_KEY_ID_INIT;
-        return( 0 );
-    }
-    else
+        return 0;
+    } else
 #endif /* MBEDTLS_ECDH_C */
-    if( 0 /* other KEMs? */ )
-    {
+    if (0 /* other KEMs? */) {
         /* Do something */
     }
 
-    return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
 }
 
 /*
@@ -216,26 +209,25 @@
  */
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_get_default_group_id( mbedtls_ssl_context *ssl,
-                                           uint16_t *group_id )
+static int ssl_tls13_get_default_group_id(mbedtls_ssl_context *ssl,
+                                          uint16_t *group_id)
 {
     int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
 
 
 #if defined(MBEDTLS_ECDH_C)
-    const uint16_t *group_list = mbedtls_ssl_get_groups( ssl );
+    const uint16_t *group_list = mbedtls_ssl_get_groups(ssl);
     /* Pick first available ECDHE group compatible with TLS 1.3 */
-    if( group_list == NULL )
-        return( MBEDTLS_ERR_SSL_BAD_CONFIG );
+    if (group_list == NULL) {
+        return MBEDTLS_ERR_SSL_BAD_CONFIG;
+    }
 
-    for ( ; *group_list != 0; group_list++ )
-    {
-        if( ( mbedtls_ssl_get_psa_curve_info_from_tls_id( *group_list,
-                            NULL, NULL ) == PSA_SUCCESS ) &&
-            mbedtls_ssl_tls13_named_group_is_ecdhe( *group_list ) )
-        {
+    for (; *group_list != 0; group_list++) {
+        if ((mbedtls_ssl_get_psa_curve_info_from_tls_id(*group_list,
+                                                        NULL, NULL) == PSA_SUCCESS) &&
+            mbedtls_ssl_tls13_named_group_is_ecdhe(*group_list)) {
             *group_id = *group_list;
-            return( 0 );
+            return 0;
         }
     }
 #else
@@ -248,7 +240,7 @@
      * Pick first available DHE group compatible with TLS 1.3
      */
 
-    return( ret );
+    return ret;
 }
 
 /*
@@ -265,10 +257,10 @@
  *      } KeyShareClientHello;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_key_share_ext( mbedtls_ssl_context *ssl,
-                                          unsigned char *buf,
-                                          unsigned char *end,
-                                          size_t *out_len )
+static int ssl_tls13_write_key_share_ext(mbedtls_ssl_context *ssl,
+                                         unsigned char *buf,
+                                         unsigned char *end,
+                                         size_t *out_len)
 {
     unsigned char *p = buf;
     unsigned char *client_shares; /* Start of client_shares */
@@ -283,18 +275,17 @@
      * - extension_data_length  (2 bytes)
      * - client_shares_length   (2 bytes)
      */
-    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 6 );
+    MBEDTLS_SSL_CHK_BUF_PTR(p, end, 6);
     p += 6;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello: adding key share extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello: adding key share extension"));
 
     /* HRR could already have requested something else. */
     group_id = ssl->handshake->offered_group_id;
-    if( !mbedtls_ssl_tls13_named_group_is_ecdhe( group_id ) &&
-        !mbedtls_ssl_tls13_named_group_is_dhe( group_id ) )
-    {
-        MBEDTLS_SSL_PROC_CHK( ssl_tls13_get_default_group_id( ssl,
-                                                              &group_id ) );
+    if (!mbedtls_ssl_tls13_named_group_is_ecdhe(group_id) &&
+        !mbedtls_ssl_tls13_named_group_is_dhe(group_id)) {
+        MBEDTLS_SSL_PROC_CHK(ssl_tls13_get_default_group_id(ssl,
+                                                            &group_id));
     }
 
     /*
@@ -307,8 +298,7 @@
      */
     client_shares = p;
 #if defined(MBEDTLS_ECDH_C)
-    if( mbedtls_ssl_tls13_named_group_is_ecdhe( group_id ) )
-    {
+    if (mbedtls_ssl_tls13_named_group_is_ecdhe(group_id)) {
         /* Pointer to group */
         unsigned char *group = p;
         /* Length of key_exchange */
@@ -318,41 +308,39 @@
          * - group                  (2 bytes)
          * - key_exchange_length    (2 bytes)
          */
-        MBEDTLS_SSL_CHK_BUF_PTR( p, end, 4 );
+        MBEDTLS_SSL_CHK_BUF_PTR(p, end, 4);
         p += 4;
         ret = mbedtls_ssl_tls13_generate_and_write_ecdh_key_exchange(
-                                    ssl, group_id, p, end, &key_exchange_len );
+            ssl, group_id, p, end, &key_exchange_len);
         p += key_exchange_len;
-        if( ret != 0 )
-            return( ret );
+        if (ret != 0) {
+            return ret;
+        }
 
         /* Write group */
-        MBEDTLS_PUT_UINT16_BE( group_id, group, 0 );
+        MBEDTLS_PUT_UINT16_BE(group_id, group, 0);
         /* Write key_exchange_length */
-        MBEDTLS_PUT_UINT16_BE( key_exchange_len, group, 2 );
-    }
-    else
+        MBEDTLS_PUT_UINT16_BE(key_exchange_len, group, 2);
+    } else
 #endif /* MBEDTLS_ECDH_C */
-    if( 0 /* other KEMs? */ )
-    {
+    if (0 /* other KEMs? */) {
         /* Do something */
+    } else {
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
-    else
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
 
     /* Length of client_shares */
     client_shares_len = p - client_shares;
-    if( client_shares_len == 0)
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "No key share defined." ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    if (client_shares_len == 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("No key share defined."));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
     /* Write extension_type */
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_KEY_SHARE, buf, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_KEY_SHARE, buf, 0);
     /* Write extension_data_length */
-    MBEDTLS_PUT_UINT16_BE( client_shares_len + 2, buf, 2 );
+    MBEDTLS_PUT_UINT16_BE(client_shares_len + 2, buf, 2);
     /* Write client_shares_length */
-    MBEDTLS_PUT_UINT16_BE( client_shares_len, buf, 4 );
+    MBEDTLS_PUT_UINT16_BE(client_shares_len, buf, 4);
 
     /* Update offered_group_id field */
     ssl->handshake->offered_group_id = group_id;
@@ -360,13 +348,13 @@
     /* Output the total length of key_share extension. */
     *out_len = p - buf;
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, key_share extension", buf, *out_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, key_share extension", buf, *out_len);
 
-    mbedtls_ssl_tls13_set_hs_sent_ext_mask( ssl, MBEDTLS_TLS_EXT_KEY_SHARE );
+    mbedtls_ssl_tls13_set_hs_sent_ext_mask(ssl, MBEDTLS_TLS_EXT_KEY_SHARE);
 
 cleanup:
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED */
 
@@ -379,25 +367,26 @@
  * } KeyShareHelloRetryRequest;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_hrr_key_share_ext( mbedtls_ssl_context *ssl,
-                                              const unsigned char *buf,
-                                              const unsigned char *end )
+static int ssl_tls13_parse_hrr_key_share_ext(mbedtls_ssl_context *ssl,
+                                             const unsigned char *buf,
+                                             const unsigned char *end)
 {
 #if defined(MBEDTLS_ECDH_C)
     const unsigned char *p = buf;
     int selected_group;
     int found = 0;
 
-    const uint16_t *group_list = mbedtls_ssl_get_groups( ssl );
-    if( group_list == NULL )
-        return( MBEDTLS_ERR_SSL_BAD_CONFIG );
+    const uint16_t *group_list = mbedtls_ssl_get_groups(ssl);
+    if (group_list == NULL) {
+        return MBEDTLS_ERR_SSL_BAD_CONFIG;
+    }
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "key_share extension", p, end - buf );
+    MBEDTLS_SSL_DEBUG_BUF(3, "key_share extension", p, end - buf);
 
     /* Read selected_group */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    selected_group = MBEDTLS_GET_UINT16_BE( p, 0 );
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "selected_group ( %d )", selected_group ) );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    selected_group = MBEDTLS_GET_UINT16_BE(p, 0);
+    MBEDTLS_SSL_DEBUG_MSG(3, ("selected_group ( %d )", selected_group));
 
     /* Upon receipt of this extension in a HelloRetryRequest, the client
      * MUST first verify that the selected_group field corresponds to a
@@ -408,12 +397,12 @@
      * If the server provided a key share that was not sent in the ClientHello
      * then the client MUST abort the handshake with an "illegal_parameter" alert.
      */
-    for( ; *group_list != 0; group_list++ )
-    {
-        if( ( mbedtls_ssl_get_psa_curve_info_from_tls_id( *group_list,
-                NULL, NULL ) == PSA_ERROR_NOT_SUPPORTED ) ||
-                *group_list != selected_group )
+    for (; *group_list != 0; group_list++) {
+        if ((mbedtls_ssl_get_psa_curve_info_from_tls_id(*group_list,
+                                                        NULL, NULL) == PSA_ERROR_NOT_SUPPORTED) ||
+            *group_list != selected_group) {
             continue;
+        }
 
         /* We found a match */
         found = 1;
@@ -427,24 +416,23 @@
      * ClientHello then the client MUST abort the handshake with
      * an "illegal_parameter" alert.
      */
-    if( found == 0 || selected_group == ssl->handshake->offered_group_id )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "Invalid key share in HRR" ) );
+    if (found == 0 || selected_group == ssl->handshake->offered_group_id) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("Invalid key share in HRR"));
         MBEDTLS_SSL_PEND_FATAL_ALERT(
-                MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
+            MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+            MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
     }
 
     /* Remember server's preference for next ClientHello */
     ssl->handshake->offered_group_id = selected_group;
 
-    return( 0 );
+    return 0;
 #else
     (void) ssl;
     (void) buf;
     (void) end;
-    return( MBEDTLS_ERR_SSL_BAD_CONFIG );
+    return MBEDTLS_ERR_SSL_BAD_CONFIG;
 #endif
 }
 
@@ -461,9 +449,9 @@
  * } KeyShareEntry;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_key_share_ext( mbedtls_ssl_context *ssl,
-                                          const unsigned char *buf,
-                                          const unsigned char *end )
+static int ssl_tls13_parse_key_share_ext(mbedtls_ssl_context *ssl,
+                                         const unsigned char *buf,
+                                         const unsigned char *end)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const unsigned char *p = buf;
@@ -473,49 +461,45 @@
      * NamedGroup group; (2 bytes)
      * ...
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    group = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    group = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
     /* Check that the chosen group matches the one we offered. */
     offered_group = ssl->handshake->offered_group_id;
-    if( offered_group != group )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1,
-            ( "Invalid server key share, our group %u, their group %u",
-              (unsigned) offered_group, (unsigned) group ) );
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE,
-                                      MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE );
+    if (offered_group != group) {
+        MBEDTLS_SSL_DEBUG_MSG(1,
+                              ("Invalid server key share, our group %u, their group %u",
+                               (unsigned) offered_group, (unsigned) group));
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE,
+                                     MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
     }
 
 #if defined(MBEDTLS_ECDH_C)
-    if( mbedtls_ssl_tls13_named_group_is_ecdhe( group ) )
-    {
-        if( mbedtls_ssl_get_psa_curve_info_from_tls_id( group, NULL, NULL )
-                    == PSA_ERROR_NOT_SUPPORTED )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "Invalid TLS curve group id" ) );
-            return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    if (mbedtls_ssl_tls13_named_group_is_ecdhe(group)) {
+        if (mbedtls_ssl_get_psa_curve_info_from_tls_id(group, NULL, NULL)
+            == PSA_ERROR_NOT_SUPPORTED) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("Invalid TLS curve group id"));
+            return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
         }
 
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "ECDH curve: %s",
-                    mbedtls_ssl_get_curve_name_from_tls_id( group ) ) );
+        MBEDTLS_SSL_DEBUG_MSG(2, ("ECDH curve: %s",
+                                  mbedtls_ssl_get_curve_name_from_tls_id(group)));
 
-        ret = mbedtls_ssl_tls13_read_public_ecdhe_share( ssl, p, end - p );
-        if( ret != 0 )
-            return( ret );
-    }
-    else
+        ret = mbedtls_ssl_tls13_read_public_ecdhe_share(ssl, p, end - p);
+        if (ret != 0) {
+            return ret;
+        }
+    } else
 #endif /* MBEDTLS_ECDH_C */
-    if( 0 /* other KEMs? */ )
-    {
+    if (0 /* other KEMs? */) {
         /* Do something */
+    } else {
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
-    else
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
 
-    return( ret );
+    return ret;
 }
 
 /*
@@ -535,76 +519,74 @@
  * cookies in their initial ClientHello in subsequent connections.
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_cookie_ext( mbedtls_ssl_context *ssl,
-                                       const unsigned char *buf,
-                                       const unsigned char *end )
+static int ssl_tls13_parse_cookie_ext(mbedtls_ssl_context *ssl,
+                                      const unsigned char *buf,
+                                      const unsigned char *end)
 {
     uint16_t cookie_len;
     const unsigned char *p = buf;
     mbedtls_ssl_handshake_params *handshake = ssl->handshake;
 
     /* Retrieve length field of cookie */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    cookie_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    cookie_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, cookie_len );
-    MBEDTLS_SSL_DEBUG_BUF( 3, "cookie extension", p, cookie_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, cookie_len);
+    MBEDTLS_SSL_DEBUG_BUF(3, "cookie extension", p, cookie_len);
 
-    mbedtls_free( handshake->cookie );
+    mbedtls_free(handshake->cookie);
     handshake->cookie_len = 0;
-    handshake->cookie = mbedtls_calloc( 1, cookie_len );
-    if( handshake->cookie == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1,
-                ( "alloc failed ( %ud bytes )",
-                  cookie_len ) );
-        return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
+    handshake->cookie = mbedtls_calloc(1, cookie_len);
+    if (handshake->cookie == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1,
+                              ("alloc failed ( %ud bytes )",
+                               cookie_len));
+        return MBEDTLS_ERR_SSL_ALLOC_FAILED;
     }
 
-    memcpy( handshake->cookie, p, cookie_len );
+    memcpy(handshake->cookie, p, cookie_len);
     handshake->cookie_len = cookie_len;
 
-    return( 0 );
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_cookie_ext( mbedtls_ssl_context *ssl,
-                                       unsigned char *buf,
-                                       unsigned char *end,
-                                       size_t *out_len )
+static int ssl_tls13_write_cookie_ext(mbedtls_ssl_context *ssl,
+                                      unsigned char *buf,
+                                      unsigned char *end,
+                                      size_t *out_len)
 {
     unsigned char *p = buf;
     *out_len = 0;
     mbedtls_ssl_handshake_params *handshake = ssl->handshake;
 
-    if( handshake->cookie == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "no cookie to send; skip extension" ) );
-        return( 0 );
+    if (handshake->cookie == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("no cookie to send; skip extension"));
+        return 0;
     }
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, cookie",
-                           handshake->cookie,
-                           handshake->cookie_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, cookie",
+                          handshake->cookie,
+                          handshake->cookie_len);
 
-    MBEDTLS_SSL_CHK_BUF_PTR( p, end, handshake->cookie_len + 6 );
+    MBEDTLS_SSL_CHK_BUF_PTR(p, end, handshake->cookie_len + 6);
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding cookie extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello, adding cookie extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_COOKIE, p, 0 );
-    MBEDTLS_PUT_UINT16_BE( handshake->cookie_len + 2, p, 2 );
-    MBEDTLS_PUT_UINT16_BE( handshake->cookie_len, p, 4 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_COOKIE, p, 0);
+    MBEDTLS_PUT_UINT16_BE(handshake->cookie_len + 2, p, 2);
+    MBEDTLS_PUT_UINT16_BE(handshake->cookie_len, p, 4);
     p += 6;
 
     /* Cookie */
-    memcpy( p, handshake->cookie, handshake->cookie_len );
+    memcpy(p, handshake->cookie, handshake->cookie_len);
 
     *out_len = handshake->cookie_len + 6;
 
-    mbedtls_ssl_tls13_set_hs_sent_ext_mask( ssl, MBEDTLS_TLS_EXT_COOKIE );
+    mbedtls_ssl_tls13_set_hs_sent_ext_mask(ssl, MBEDTLS_TLS_EXT_COOKIE);
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_PSK_ENABLED)
@@ -618,195 +600,195 @@
  * } PskKeyExchangeModes;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_psk_key_exchange_modes_ext( mbedtls_ssl_context *ssl,
-                                                       unsigned char *buf,
-                                                       unsigned char *end,
-                                                       size_t *out_len )
+static int ssl_tls13_write_psk_key_exchange_modes_ext(mbedtls_ssl_context *ssl,
+                                                      unsigned char *buf,
+                                                      unsigned char *end,
+                                                      size_t *out_len)
 {
     unsigned char *p = buf;
     int ke_modes_len = 0;
 
-    ((void) ke_modes_len );
+    ((void) ke_modes_len);
     *out_len = 0;
 
     /* Skip writing extension if no PSK key exchange mode
      * is enabled in the config.
      */
-    if( !mbedtls_ssl_conf_tls13_some_psk_enabled( ssl ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "skip psk_key_exchange_modes extension" ) );
-        return( 0 );
+    if (!mbedtls_ssl_conf_tls13_some_psk_enabled(ssl)) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("skip psk_key_exchange_modes extension"));
+        return 0;
     }
 
     /* Require 7 bytes of data, otherwise fail,
      * even if extension might be shorter.
      */
-    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 7 );
+    MBEDTLS_SSL_CHK_BUF_PTR(p, end, 7);
     MBEDTLS_SSL_DEBUG_MSG(
-            3, ( "client hello, adding psk_key_exchange_modes extension" ) );
+        3, ("client hello, adding psk_key_exchange_modes extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_PSK_KEY_EXCHANGE_MODES, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_PSK_KEY_EXCHANGE_MODES, p, 0);
 
     /* Skip extension length (2 bytes) and
      * ke_modes length (1 byte) for now.
      */
     p += 5;
 
-    if( mbedtls_ssl_conf_tls13_psk_ephemeral_enabled( ssl ) )
-    {
+    if (mbedtls_ssl_conf_tls13_psk_ephemeral_enabled(ssl)) {
         *p++ = MBEDTLS_SSL_TLS1_3_PSK_MODE_ECDHE;
         ke_modes_len++;
 
-        MBEDTLS_SSL_DEBUG_MSG( 4, ( "Adding PSK-ECDHE key exchange mode" ) );
+        MBEDTLS_SSL_DEBUG_MSG(4, ("Adding PSK-ECDHE key exchange mode"));
     }
 
-    if( mbedtls_ssl_conf_tls13_psk_enabled( ssl ) )
-    {
+    if (mbedtls_ssl_conf_tls13_psk_enabled(ssl)) {
         *p++ = MBEDTLS_SSL_TLS1_3_PSK_MODE_PURE;
         ke_modes_len++;
 
-        MBEDTLS_SSL_DEBUG_MSG( 4, ( "Adding pure PSK key exchange mode" ) );
+        MBEDTLS_SSL_DEBUG_MSG(4, ("Adding pure PSK key exchange mode"));
     }
 
     /* Now write the extension and ke_modes length */
-    MBEDTLS_PUT_UINT16_BE( ke_modes_len + 1, buf, 2 );
+    MBEDTLS_PUT_UINT16_BE(ke_modes_len + 1, buf, 2);
     buf[4] = ke_modes_len;
 
     *out_len = p - buf;
 
     mbedtls_ssl_tls13_set_hs_sent_ext_mask(
-        ssl, MBEDTLS_TLS_EXT_PSK_KEY_EXCHANGE_MODES );
+        ssl, MBEDTLS_TLS_EXT_PSK_KEY_EXCHANGE_MODES);
 
-    return ( 0 );
+    return 0;
 }
 
-static psa_algorithm_t ssl_tls13_get_ciphersuite_hash_alg( int ciphersuite )
+static psa_algorithm_t ssl_tls13_get_ciphersuite_hash_alg(int ciphersuite)
 {
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info = NULL;
-    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( ciphersuite );
+    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id(ciphersuite);
 
-    if( ciphersuite_info != NULL )
-       return( mbedtls_psa_translate_md( ciphersuite_info->mac ) );
+    if (ciphersuite_info != NULL) {
+        return mbedtls_psa_translate_md(ciphersuite_info->mac);
+    }
 
-    return( PSA_ALG_NONE );
+    return PSA_ALG_NONE;
 }
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-static int ssl_tls13_has_configured_ticket( mbedtls_ssl_context *ssl )
+static int ssl_tls13_has_configured_ticket(mbedtls_ssl_context *ssl)
 {
     mbedtls_ssl_session *session = ssl->session_negotiate;
-    return( ssl->handshake->resume &&
-            session != NULL && session->ticket != NULL );
+    return ssl->handshake->resume &&
+           session != NULL && session->ticket != NULL;
 }
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-static int ssl_tls13_early_data_has_valid_ticket( mbedtls_ssl_context *ssl )
+static int ssl_tls13_early_data_has_valid_ticket(mbedtls_ssl_context *ssl)
 {
     mbedtls_ssl_session *session = ssl->session_negotiate;
-    return( ssl->handshake->resume &&
-            session->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 &&
-            ( session->ticket_flags &
-              MBEDTLS_SSL_TLS1_3_TICKET_ALLOW_EARLY_DATA ) &&
-            mbedtls_ssl_tls13_cipher_suite_is_offered(
-                ssl, session->ciphersuite ) );
+    return ssl->handshake->resume &&
+           session->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 &&
+           (session->ticket_flags &
+            MBEDTLS_SSL_TLS1_3_TICKET_ALLOW_EARLY_DATA) &&
+           mbedtls_ssl_tls13_cipher_suite_is_offered(
+        ssl, session->ciphersuite);
 }
 #endif
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_ticket_get_identity( mbedtls_ssl_context *ssl,
-                                          psa_algorithm_t *hash_alg,
-                                          const unsigned char **identity,
-                                          size_t *identity_len )
+static int ssl_tls13_ticket_get_identity(mbedtls_ssl_context *ssl,
+                                         psa_algorithm_t *hash_alg,
+                                         const unsigned char **identity,
+                                         size_t *identity_len)
 {
     mbedtls_ssl_session *session = ssl->session_negotiate;
 
-    if( !ssl_tls13_has_configured_ticket( ssl ) )
-        return( -1 );
+    if (!ssl_tls13_has_configured_ticket(ssl)) {
+        return -1;
+    }
 
-    *hash_alg = ssl_tls13_get_ciphersuite_hash_alg( session->ciphersuite );
+    *hash_alg = ssl_tls13_get_ciphersuite_hash_alg(session->ciphersuite);
     *identity = session->ticket;
     *identity_len = session->ticket_len;
-    return( 0 );
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_ticket_get_psk( mbedtls_ssl_context *ssl,
-                                     psa_algorithm_t *hash_alg,
-                                     const unsigned char **psk,
-                                     size_t *psk_len )
+static int ssl_tls13_ticket_get_psk(mbedtls_ssl_context *ssl,
+                                    psa_algorithm_t *hash_alg,
+                                    const unsigned char **psk,
+                                    size_t *psk_len)
 {
 
     mbedtls_ssl_session *session = ssl->session_negotiate;
 
-    if( !ssl_tls13_has_configured_ticket( ssl ) )
-        return( -1 );
+    if (!ssl_tls13_has_configured_ticket(ssl)) {
+        return -1;
+    }
 
-    *hash_alg = ssl_tls13_get_ciphersuite_hash_alg( session->ciphersuite );
+    *hash_alg = ssl_tls13_get_ciphersuite_hash_alg(session->ciphersuite);
     *psk = session->resumption_key;
     *psk_len = session->resumption_key_len;
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_psk_get_identity( mbedtls_ssl_context *ssl,
-                                       psa_algorithm_t *hash_alg,
-                                       const unsigned char **identity,
-                                       size_t *identity_len )
+static int ssl_tls13_psk_get_identity(mbedtls_ssl_context *ssl,
+                                      psa_algorithm_t *hash_alg,
+                                      const unsigned char **identity,
+                                      size_t *identity_len)
 {
 
-    if( ! mbedtls_ssl_conf_has_static_psk( ssl->conf ) )
-        return( -1 );
+    if (!mbedtls_ssl_conf_has_static_psk(ssl->conf)) {
+        return -1;
+    }
 
     *hash_alg = PSA_ALG_SHA_256;
     *identity = ssl->conf->psk_identity;
     *identity_len = ssl->conf->psk_identity_len;
-    return( 0 );
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_psk_get_psk( mbedtls_ssl_context *ssl,
-                                  psa_algorithm_t *hash_alg,
-                                  const unsigned char **psk,
-                                  size_t *psk_len )
+static int ssl_tls13_psk_get_psk(mbedtls_ssl_context *ssl,
+                                 psa_algorithm_t *hash_alg,
+                                 const unsigned char **psk,
+                                 size_t *psk_len)
 {
 
-    if( ! mbedtls_ssl_conf_has_static_psk( ssl->conf ) )
-        return( -1 );
+    if (!mbedtls_ssl_conf_has_static_psk(ssl->conf)) {
+        return -1;
+    }
 
     *hash_alg = PSA_ALG_SHA_256;
     *psk = ssl->conf->psk;
     *psk_len = ssl->conf->psk_len;
-    return( 0 );
+    return 0;
 }
 
-static int ssl_tls13_get_configured_psk_count( mbedtls_ssl_context *ssl )
+static int ssl_tls13_get_configured_psk_count(mbedtls_ssl_context *ssl)
 {
     int configured_psk_count = 0;
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    if( ssl_tls13_has_configured_ticket( ssl ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "Ticket is configured" ) );
+    if (ssl_tls13_has_configured_ticket(ssl)) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("Ticket is configured"));
         configured_psk_count++;
     }
 #endif
-    if( mbedtls_ssl_conf_has_static_psk( ssl->conf ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "PSK is configured" ) );
+    if (mbedtls_ssl_conf_has_static_psk(ssl->conf)) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("PSK is configured"));
         configured_psk_count++;
     }
-    return( configured_psk_count );
+    return configured_psk_count;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_identity( mbedtls_ssl_context *ssl,
-                                     unsigned char *buf,
-                                     unsigned char *end,
-                                     const unsigned char *identity,
-                                     size_t identity_len,
-                                     uint32_t obfuscated_ticket_age,
-                                     size_t *out_len )
+static int ssl_tls13_write_identity(mbedtls_ssl_context *ssl,
+                                    unsigned char *buf,
+                                    unsigned char *end,
+                                    const unsigned char *identity,
+                                    size_t identity_len,
+                                    uint32_t obfuscated_ticket_age,
+                                    size_t *out_len)
 {
     ((void) ssl);
     *out_len = 0;
@@ -816,66 +798,66 @@
      * - identity               (psk_identity_len bytes)
      * - obfuscated_ticket_age  (4 bytes)
      */
-    MBEDTLS_SSL_CHK_BUF_PTR( buf, end, 6 + identity_len );
+    MBEDTLS_SSL_CHK_BUF_PTR(buf, end, 6 + identity_len);
 
-    MBEDTLS_PUT_UINT16_BE( identity_len, buf, 0 );
-    memcpy( buf + 2, identity, identity_len );
-    MBEDTLS_PUT_UINT32_BE( obfuscated_ticket_age, buf, 2 + identity_len );
+    MBEDTLS_PUT_UINT16_BE(identity_len, buf, 0);
+    memcpy(buf + 2, identity, identity_len);
+    MBEDTLS_PUT_UINT32_BE(obfuscated_ticket_age, buf, 2 + identity_len);
 
-    MBEDTLS_SSL_DEBUG_BUF( 4, "write identity", buf, 6 + identity_len );
+    MBEDTLS_SSL_DEBUG_BUF(4, "write identity", buf, 6 + identity_len);
 
     *out_len = 6 + identity_len;
 
-    return( 0 );
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_binder( mbedtls_ssl_context *ssl,
-                                   unsigned char *buf,
-                                   unsigned char *end,
-                                   int psk_type,
-                                   psa_algorithm_t hash_alg,
-                                   const unsigned char *psk,
-                                   size_t psk_len,
-                                   size_t *out_len )
+static int ssl_tls13_write_binder(mbedtls_ssl_context *ssl,
+                                  unsigned char *buf,
+                                  unsigned char *end,
+                                  int psk_type,
+                                  psa_algorithm_t hash_alg,
+                                  const unsigned char *psk,
+                                  size_t psk_len,
+                                  size_t *out_len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char binder_len;
-    unsigned char transcript[ MBEDTLS_TLS1_3_MD_MAX_SIZE ];
+    unsigned char transcript[MBEDTLS_TLS1_3_MD_MAX_SIZE];
     size_t transcript_len = 0;
 
     *out_len = 0;
 
-    binder_len = PSA_HASH_LENGTH( hash_alg );
+    binder_len = PSA_HASH_LENGTH(hash_alg);
 
     /*
      * - binder_len           (1 bytes)
      * - binder               (binder_len bytes)
      */
-    MBEDTLS_SSL_CHK_BUF_PTR( buf, end, 1 + binder_len );
+    MBEDTLS_SSL_CHK_BUF_PTR(buf, end, 1 + binder_len);
 
     buf[0] = binder_len;
 
     /* Get current state of handshake transcript. */
     ret = mbedtls_ssl_get_handshake_transcript(
-            ssl, mbedtls_hash_info_md_from_psa( hash_alg ),
-            transcript, sizeof( transcript ), &transcript_len );
-    if( ret != 0 )
-        return( ret );
-
-    ret = mbedtls_ssl_tls13_create_psk_binder( ssl, hash_alg,
-                                               psk, psk_len, psk_type,
-                                               transcript, buf + 1 );
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_tls13_create_psk_binder", ret );
-        return( ret );
+        ssl, mbedtls_hash_info_md_from_psa(hash_alg),
+        transcript, sizeof(transcript), &transcript_len);
+    if (ret != 0) {
+        return ret;
     }
-    MBEDTLS_SSL_DEBUG_BUF( 4, "write binder", buf, 1 + binder_len );
+
+    ret = mbedtls_ssl_tls13_create_psk_binder(ssl, hash_alg,
+                                              psk, psk_len, psk_type,
+                                              transcript, buf + 1);
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_tls13_create_psk_binder", ret);
+        return ret;
+    }
+    MBEDTLS_SSL_DEBUG_BUF(4, "write binder", buf, 1 + binder_len);
 
     *out_len = 1 + binder_len;
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -902,8 +884,8 @@
  *
  */
 int mbedtls_ssl_tls13_write_identities_of_pre_shared_key_ext(
-        mbedtls_ssl_context *ssl, unsigned char *buf, unsigned char *end,
-        size_t *out_len, size_t *binders_len )
+    mbedtls_ssl_context *ssl, unsigned char *buf, unsigned char *end,
+    size_t *out_len, size_t *binders_len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int configured_psk_count = 0;
@@ -918,33 +900,31 @@
     *binders_len = 0;
 
     /* Check if we have any PSKs to offer. If no, skip pre_shared_key */
-    configured_psk_count = ssl_tls13_get_configured_psk_count( ssl );
-    if( configured_psk_count == 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "skip pre_shared_key extensions" ) );
-        return( 0 );
+    configured_psk_count = ssl_tls13_get_configured_psk_count(ssl);
+    if (configured_psk_count == 0) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("skip pre_shared_key extensions"));
+        return 0;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 4, ( "Pre-configured PSK number = %d",
-                                configured_psk_count ) );
+    MBEDTLS_SSL_DEBUG_MSG(4, ("Pre-configured PSK number = %d",
+                              configured_psk_count));
 
     /* Check if we have space to write the extension, binders included.
      * - extension_type         (2 bytes)
      * - extension_data_len     (2 bytes)
      * - identities_len         (2 bytes)
      */
-    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 6 );
+    MBEDTLS_SSL_CHK_BUF_PTR(p, end, 6);
     p += 6;
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    if( ssl_tls13_ticket_get_identity(
-            ssl, &hash_alg, &identity, &identity_len ) == 0 )
-    {
+    if (ssl_tls13_ticket_get_identity(
+            ssl, &hash_alg, &identity, &identity_len) == 0) {
 #if defined(MBEDTLS_HAVE_TIME)
-        mbedtls_time_t now = mbedtls_time( NULL );
+        mbedtls_time_t now = mbedtls_time(NULL);
         mbedtls_ssl_session *session = ssl->session_negotiate;
         uint32_t obfuscated_ticket_age =
-                                (uint32_t)( now - session->ticket_received );
+            (uint32_t) (now - session->ticket_received);
 
         /*
          * The ticket timestamp is in seconds but the ticket age is in
@@ -958,69 +938,71 @@
          * one computed here and potentially reject the ticket. To avoid that,
          * remove one second to the ticket age if possible.
          */
-        if( obfuscated_ticket_age > 0 )
+        if (obfuscated_ticket_age > 0) {
             obfuscated_ticket_age -= 1;
+        }
 
         obfuscated_ticket_age *= 1000;
         obfuscated_ticket_age += session->ticket_age_add;
 
-        ret = ssl_tls13_write_identity( ssl, p, end,
-                                        identity, identity_len,
-                                        obfuscated_ticket_age,
-                                        &output_len );
+        ret = ssl_tls13_write_identity(ssl, p, end,
+                                       identity, identity_len,
+                                       obfuscated_ticket_age,
+                                       &output_len);
 #else
-        ret = ssl_tls13_write_identity( ssl, p, end, identity, identity_len,
-                                        0, &output_len );
+        ret = ssl_tls13_write_identity(ssl, p, end, identity, identity_len,
+                                       0, &output_len);
 #endif /* MBEDTLS_HAVE_TIME */
-        if( ret != 0 )
-            return( ret );
+        if (ret != 0) {
+            return ret;
+        }
 
         p += output_len;
-        l_binders_len += 1 + PSA_HASH_LENGTH( hash_alg );
+        l_binders_len += 1 + PSA_HASH_LENGTH(hash_alg);
     }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
-    if( ssl_tls13_psk_get_identity(
-            ssl, &hash_alg, &identity, &identity_len ) == 0 )
-    {
+    if (ssl_tls13_psk_get_identity(
+            ssl, &hash_alg, &identity, &identity_len) == 0) {
 
-        ret = ssl_tls13_write_identity( ssl, p, end, identity, identity_len, 0,
-                                        &output_len );
-        if( ret != 0 )
-            return( ret );
+        ret = ssl_tls13_write_identity(ssl, p, end, identity, identity_len, 0,
+                                       &output_len);
+        if (ret != 0) {
+            return ret;
+        }
 
         p += output_len;
-        l_binders_len += 1 + PSA_HASH_LENGTH( hash_alg );
+        l_binders_len += 1 + PSA_HASH_LENGTH(hash_alg);
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3,
-                 ( "client hello, adding pre_shared_key extension, "
-                   "omitting PSK binder list" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3,
+                          ("client hello, adding pre_shared_key extension, "
+                           "omitting PSK binder list"));
 
     /* Take into account the two bytes for the length of the binders. */
     l_binders_len += 2;
     /* Check if there is enough space for binders */
-    MBEDTLS_SSL_CHK_BUF_PTR( p, end, l_binders_len );
+    MBEDTLS_SSL_CHK_BUF_PTR(p, end, l_binders_len);
 
     /*
      * - extension_type         (2 bytes)
      * - extension_data_len     (2 bytes)
      * - identities_len         (2 bytes)
      */
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_PRE_SHARED_KEY, buf, 0 );
-    MBEDTLS_PUT_UINT16_BE( p - buf - 4 + l_binders_len , buf, 2 );
-    MBEDTLS_PUT_UINT16_BE( p - buf - 6 , buf, 4 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_PRE_SHARED_KEY, buf, 0);
+    MBEDTLS_PUT_UINT16_BE(p - buf - 4 + l_binders_len, buf, 2);
+    MBEDTLS_PUT_UINT16_BE(p - buf - 6, buf, 4);
 
-    *out_len = ( p - buf ) + l_binders_len;
+    *out_len = (p - buf) + l_binders_len;
     *binders_len = l_binders_len;
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "pre_shared_key identities", buf, p - buf );
+    MBEDTLS_SSL_DEBUG_BUF(3, "pre_shared_key identities", buf, p - buf);
 
-    return( 0 );
+    return 0;
 }
 
 int mbedtls_ssl_tls13_write_binders_of_pre_shared_key_ext(
-        mbedtls_ssl_context *ssl, unsigned char *buf, unsigned char *end )
+    mbedtls_ssl_context *ssl, unsigned char *buf, unsigned char *end)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *p = buf;
@@ -1032,48 +1014,48 @@
     /* Check if we have space to write binders_len.
      * - binders_len         (2 bytes)
      */
-    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 2 );
+    MBEDTLS_SSL_CHK_BUF_PTR(p, end, 2);
     p += 2;
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    if( ssl_tls13_ticket_get_psk( ssl, &hash_alg, &psk, &psk_len ) == 0 )
-    {
+    if (ssl_tls13_ticket_get_psk(ssl, &hash_alg, &psk, &psk_len) == 0) {
 
-        ret = ssl_tls13_write_binder( ssl, p, end,
-                                      MBEDTLS_SSL_TLS1_3_PSK_RESUMPTION,
-                                      hash_alg, psk, psk_len,
-                                      &output_len );
-        if( ret != 0 )
-            return( ret );
+        ret = ssl_tls13_write_binder(ssl, p, end,
+                                     MBEDTLS_SSL_TLS1_3_PSK_RESUMPTION,
+                                     hash_alg, psk, psk_len,
+                                     &output_len);
+        if (ret != 0) {
+            return ret;
+        }
         p += output_len;
     }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
-    if( ssl_tls13_psk_get_psk( ssl, &hash_alg, &psk, &psk_len ) == 0 )
-    {
+    if (ssl_tls13_psk_get_psk(ssl, &hash_alg, &psk, &psk_len) == 0) {
 
-        ret = ssl_tls13_write_binder( ssl, p, end,
-                                      MBEDTLS_SSL_TLS1_3_PSK_EXTERNAL,
-                                      hash_alg, psk, psk_len,
-                                      &output_len );
-        if( ret != 0 )
-            return( ret );
+        ret = ssl_tls13_write_binder(ssl, p, end,
+                                     MBEDTLS_SSL_TLS1_3_PSK_EXTERNAL,
+                                     hash_alg, psk, psk_len,
+                                     &output_len);
+        if (ret != 0) {
+            return ret;
+        }
         p += output_len;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding PSK binder list." ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello, adding PSK binder list."));
 
     /*
      * - binders_len         (2 bytes)
      */
-    MBEDTLS_PUT_UINT16_BE( p - buf - 2, buf, 0 );
+    MBEDTLS_PUT_UINT16_BE(p - buf - 2, buf, 0);
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "pre_shared_key binders", buf, p - buf );
+    MBEDTLS_SSL_DEBUG_BUF(3, "pre_shared_key binders", buf, p - buf);
 
     mbedtls_ssl_tls13_set_hs_sent_ext_mask(
-        ssl, MBEDTLS_TLS_EXT_PRE_SHARED_KEY );
+        ssl, MBEDTLS_TLS_EXT_PRE_SHARED_KEY);
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -1095,9 +1077,9 @@
  *
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_server_pre_shared_key_ext( mbedtls_ssl_context *ssl,
-                                                      const unsigned char *buf,
-                                                      const unsigned char *end )
+static int ssl_tls13_parse_server_pre_shared_key_ext(mbedtls_ssl_context *ssl,
+                                                     const unsigned char *buf,
+                                                     const unsigned char *end)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int selected_identity;
@@ -1105,54 +1087,48 @@
     size_t psk_len;
     psa_algorithm_t hash_alg;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( buf, end, 2 );
-    selected_identity = MBEDTLS_GET_UINT16_BE( buf, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(buf, end, 2);
+    selected_identity = MBEDTLS_GET_UINT16_BE(buf, 0);
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "selected_identity = %d", selected_identity ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("selected_identity = %d", selected_identity));
 
-    if( selected_identity >= ssl_tls13_get_configured_psk_count( ssl ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "Invalid PSK identity." ) );
+    if (selected_identity >= ssl_tls13_get_configured_psk_count(ssl)) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("Invalid PSK identity."));
 
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                                      MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+                                     MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
     }
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    if( selected_identity == 0 && ssl_tls13_has_configured_ticket( ssl ) )
-    {
-        ret = ssl_tls13_ticket_get_psk( ssl, &hash_alg, &psk, &psk_len );
-    }
-    else
+    if (selected_identity == 0 && ssl_tls13_has_configured_ticket(ssl)) {
+        ret = ssl_tls13_ticket_get_psk(ssl, &hash_alg, &psk, &psk_len);
+    } else
 #endif
-    if( mbedtls_ssl_conf_has_static_psk( ssl->conf ) )
-    {
-        ret = ssl_tls13_psk_get_psk( ssl, &hash_alg, &psk, &psk_len );
+    if (mbedtls_ssl_conf_has_static_psk(ssl->conf)) {
+        ret = ssl_tls13_psk_get_psk(ssl, &hash_alg, &psk, &psk_len);
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
-    }
-    if( ret != 0 )
-        return( ret );
-
-    ret = mbedtls_ssl_set_hs_psk( ssl, psk, psk_len );
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_set_hs_psk", ret );
-        return( ret );
+    if (ret != 0) {
+        return ret;
     }
 
-    return( 0 );
+    ret = mbedtls_ssl_set_hs_psk(ssl, psk, psk_len);
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_set_hs_psk", ret);
+        return ret;
+    }
+
+    return 0;
 }
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_PSK_ENABLED */
 
-int mbedtls_ssl_tls13_write_client_hello_exts( mbedtls_ssl_context *ssl,
-                                               unsigned char *buf,
-                                               unsigned char *end,
-                                               size_t *out_len )
+int mbedtls_ssl_tls13_write_client_hello_exts(mbedtls_ssl_context *ssl,
+                                              unsigned char *buf,
+                                              unsigned char *end,
+                                              size_t *out_len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *p = buf;
@@ -1164,37 +1140,39 @@
      *
      * Supported Versions Extension is mandatory with TLS 1.3.
      */
-    ret = ssl_tls13_write_supported_versions_ext( ssl, p, end, &ext_len );
-    if( ret != 0 )
-        return( ret );
+    ret = ssl_tls13_write_supported_versions_ext(ssl, p, end, &ext_len);
+    if (ret != 0) {
+        return ret;
+    }
     p += ext_len;
 
     /* Echo the cookie if the server provided one in its preceding
      * HelloRetryRequest message.
      */
-    ret = ssl_tls13_write_cookie_ext( ssl, p, end, &ext_len );
-    if( ret != 0 )
-        return( ret );
+    ret = ssl_tls13_write_cookie_ext(ssl, p, end, &ext_len);
+    if (ret != 0) {
+        return ret;
+    }
     p += ext_len;
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED)
-    if( mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
-    {
-        ret = ssl_tls13_write_key_share_ext( ssl, p, end, &ext_len );
-        if( ret != 0 )
-            return( ret );
+    if (mbedtls_ssl_conf_tls13_some_ephemeral_enabled(ssl)) {
+        ret = ssl_tls13_write_key_share_ext(ssl, p, end, &ext_len);
+        if (ret != 0) {
+            return ret;
+        }
         p += ext_len;
     }
 #endif
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-    if( mbedtls_ssl_conf_tls13_some_psk_enabled( ssl ) &&
-        ssl_tls13_early_data_has_valid_ticket( ssl ) &&
-        ssl->conf->early_data_enabled == MBEDTLS_SSL_EARLY_DATA_ENABLED )
-    {
-        ret = mbedtls_ssl_tls13_write_early_data_ext( ssl, p, end, &ext_len );
-        if( ret != 0 )
-            return( ret );
+    if (mbedtls_ssl_conf_tls13_some_psk_enabled(ssl) &&
+        ssl_tls13_early_data_has_valid_ticket(ssl) &&
+        ssl->conf->early_data_enabled == MBEDTLS_SSL_EARLY_DATA_ENABLED) {
+        ret = mbedtls_ssl_tls13_write_early_data_ext(ssl, p, end, &ext_len);
+        if (ret != 0) {
+            return ret;
+        }
         p += ext_len;
 
         /* Initializes the status to `rejected`. It will be updated to
@@ -1202,10 +1180,8 @@
          * indication extension.
          */
         ssl->early_data_status = MBEDTLS_SSL_EARLY_DATA_STATUS_REJECTED;
-    }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write early_data extension" ) );
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write early_data extension"));
         ssl->early_data_status = MBEDTLS_SSL_EARLY_DATA_STATUS_NOT_SENT;
     }
 #endif /* MBEDTLS_SSL_EARLY_DATA */
@@ -1220,15 +1196,16 @@
      *
      * Add the psk_key_exchange_modes extension.
      */
-    ret = ssl_tls13_write_psk_key_exchange_modes_ext( ssl, p, end, &ext_len );
-    if( ret != 0 )
-        return( ret );
+    ret = ssl_tls13_write_psk_key_exchange_modes_ext(ssl, p, end, &ext_len);
+    if (ret != 0) {
+        return ret;
+    }
     p += ext_len;
 #endif
 
     *out_len = p - buf;
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -1251,7 +1228,7 @@
 static int ssl_tls13_is_supported_versions_ext_present(
     mbedtls_ssl_context *ssl,
     const unsigned char *buf,
-    const unsigned char *end )
+    const unsigned char *end)
 {
     const unsigned char *p = buf;
     size_t legacy_session_id_echo_len;
@@ -1265,7 +1242,7 @@
      * - random                         MBEDTLS_SERVER_HELLO_RANDOM_LEN bytes
      * - legacy_session_id_echo length  1 byte
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, MBEDTLS_SERVER_HELLO_RANDOM_LEN + 3 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, MBEDTLS_SERVER_HELLO_RANDOM_LEN + 3);
     p += MBEDTLS_SERVER_HELLO_RANDOM_LEN + 2;
     legacy_session_id_echo_len = *p;
 
@@ -1275,12 +1252,13 @@
      * - cipher_suite               2 bytes
      * - legacy_compression_method  1 byte
      */
-     MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, legacy_session_id_echo_len + 4 );
-     p += legacy_session_id_echo_len + 4;
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, legacy_session_id_echo_len + 4);
+    p += legacy_session_id_echo_len + 4;
 
     /* Case of no extension */
-    if( p == end )
-        return( 0 );
+    if (p == end) {
+        return 0;
+    }
 
     /* ...
      * Extension extensions<6..2^16-1>;
@@ -1290,32 +1268,32 @@
      *      opaque extension_data<0..2^16-1>;
      * } Extension;
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    extensions_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    extensions_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
     /* Check extensions do not go beyond the buffer of data. */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extensions_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, extensions_len);
     extensions_end = p + extensions_len;
 
-    while( p < extensions_end )
-    {
+    while (p < extensions_end) {
         unsigned int extension_type;
         size_t extension_data_len;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, 4 );
-        extension_type = MBEDTLS_GET_UINT16_BE( p, 0 );
-        extension_data_len = MBEDTLS_GET_UINT16_BE( p, 2 );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, 4);
+        extension_type = MBEDTLS_GET_UINT16_BE(p, 0);
+        extension_data_len = MBEDTLS_GET_UINT16_BE(p, 2);
         p += 4;
 
-        if( extension_type == MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS )
-            return( 1 );
+        if (extension_type == MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS) {
+            return 1;
+        }
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, extension_data_len );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, extension_data_len);
         p += extension_data_len;
     }
 
-    return( 0 );
+    return 0;
 }
 
 /* Returns a negative value on failure, and otherwise
@@ -1324,29 +1302,28 @@
  * - 0 otherwise
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_is_downgrade_negotiation( mbedtls_ssl_context *ssl,
-                                               const unsigned char *buf,
-                                               const unsigned char *end )
+static int ssl_tls13_is_downgrade_negotiation(mbedtls_ssl_context *ssl,
+                                              const unsigned char *buf,
+                                              const unsigned char *end)
 {
     /* First seven bytes of the magic downgrade strings, see RFC 8446 4.1.3 */
     static const unsigned char magic_downgrade_string[] =
-        { 0x44, 0x4F, 0x57, 0x4E, 0x47, 0x52, 0x44 };
+    { 0x44, 0x4F, 0x57, 0x4E, 0x47, 0x52, 0x44 };
     const unsigned char *last_eight_bytes_of_random;
     unsigned char last_byte_of_random;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( buf, end, MBEDTLS_SERVER_HELLO_RANDOM_LEN + 2 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(buf, end, MBEDTLS_SERVER_HELLO_RANDOM_LEN + 2);
     last_eight_bytes_of_random = buf + 2 + MBEDTLS_SERVER_HELLO_RANDOM_LEN - 8;
 
-    if( memcmp( last_eight_bytes_of_random,
-                magic_downgrade_string,
-                sizeof( magic_downgrade_string ) ) == 0 )
-    {
+    if (memcmp(last_eight_bytes_of_random,
+               magic_downgrade_string,
+               sizeof(magic_downgrade_string)) == 0) {
         last_byte_of_random = last_eight_bytes_of_random[7];
-        return( last_byte_of_random == 0 ||
-                last_byte_of_random == 1    );
+        return last_byte_of_random == 0 ||
+               last_byte_of_random == 1;
     }
 
-    return( 0 );
+    return 0;
 }
 
 /* Returns a negative value on failure, and otherwise
@@ -1357,9 +1334,9 @@
 #define SSL_SERVER_HELLO 0
 #define SSL_SERVER_HELLO_HRR 1
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_server_hello_is_hrr( mbedtls_ssl_context *ssl,
-                                    const unsigned char *buf,
-                                    const unsigned char *end )
+static int ssl_server_hello_is_hrr(mbedtls_ssl_context *ssl,
+                                   const unsigned char *buf,
+                                   const unsigned char *end)
 {
 
     /* Check whether this message is a HelloRetryRequest ( HRR ) message.
@@ -1377,16 +1354,15 @@
      * } ServerHello;
      *
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( buf, end,
-                    2 + sizeof( mbedtls_ssl_tls13_hello_retry_request_magic ) );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(buf, end,
+                                 2 + sizeof(mbedtls_ssl_tls13_hello_retry_request_magic));
 
-    if( memcmp( buf + 2, mbedtls_ssl_tls13_hello_retry_request_magic,
-                sizeof( mbedtls_ssl_tls13_hello_retry_request_magic ) ) == 0 )
-    {
-        return( SSL_SERVER_HELLO_HRR );
+    if (memcmp(buf + 2, mbedtls_ssl_tls13_hello_retry_request_magic,
+               sizeof(mbedtls_ssl_tls13_hello_retry_request_magic)) == 0) {
+        return SSL_SERVER_HELLO_HRR;
     }
 
-    return( SSL_SERVER_HELLO );
+    return SSL_SERVER_HELLO;
 }
 
 /*
@@ -1397,20 +1373,19 @@
  */
 #define SSL_SERVER_HELLO_TLS1_2 2
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_preprocess_server_hello( mbedtls_ssl_context *ssl,
-                                              const unsigned char *buf,
-                                              const unsigned char *end )
+static int ssl_tls13_preprocess_server_hello(mbedtls_ssl_context *ssl,
+                                             const unsigned char *buf,
+                                             const unsigned char *end)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_ssl_handshake_params *handshake = ssl->handshake;
 
-    MBEDTLS_SSL_PROC_CHK_NEG( ssl_tls13_is_supported_versions_ext_present(
-                                  ssl, buf, end ) );
+    MBEDTLS_SSL_PROC_CHK_NEG(ssl_tls13_is_supported_versions_ext_present(
+                                 ssl, buf, end));
 
-    if( ret == 0 )
-    {
+    if (ret == 0) {
         MBEDTLS_SSL_PROC_CHK_NEG(
-            ssl_tls13_is_downgrade_negotiation( ssl, buf, end ) );
+            ssl_tls13_is_downgrade_negotiation(ssl, buf, end));
 
         /* If the server is negotiating TLS 1.2 or below and:
          * . we did not propose TLS 1.2 or
@@ -1418,26 +1393,25 @@
          *   version of the protocol and thus we are under downgrade attack
          * abort the handshake with an "illegal parameter" alert.
          */
-        if( handshake->min_tls_version > MBEDTLS_SSL_VERSION_TLS1_2 || ret )
-        {
-            MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                                          MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
-            return( MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
+        if (handshake->min_tls_version > MBEDTLS_SSL_VERSION_TLS1_2 || ret) {
+            MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+                                         MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
+            return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
         }
 
         ssl->keep_current_message = 1;
         ssl->tls_version = MBEDTLS_SSL_VERSION_TLS1_2;
-        mbedtls_ssl_add_hs_msg_to_checksum( ssl, MBEDTLS_SSL_HS_SERVER_HELLO,
-                                            buf, (size_t)(end - buf) );
+        mbedtls_ssl_add_hs_msg_to_checksum(ssl, MBEDTLS_SSL_HS_SERVER_HELLO,
+                                           buf, (size_t) (end - buf));
 
-        if( mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
-        {
-            ret = ssl_tls13_reset_key_share( ssl );
-            if( ret != 0 )
-                return( ret );
+        if (mbedtls_ssl_conf_tls13_some_ephemeral_enabled(ssl)) {
+            ret = ssl_tls13_reset_key_share(ssl);
+            if (ret != 0) {
+                return ret;
+            }
         }
 
-        return( SSL_SERVER_HELLO_TLS1_2 );
+        return SSL_SERVER_HELLO_TLS1_2;
     }
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
@@ -1447,25 +1421,23 @@
 
     handshake->received_extensions = MBEDTLS_SSL_EXT_MASK_NONE;
 
-    ret = ssl_server_hello_is_hrr( ssl, buf, end );
-    switch( ret )
-    {
+    ret = ssl_server_hello_is_hrr(ssl, buf, end);
+    switch (ret) {
         case SSL_SERVER_HELLO:
-            MBEDTLS_SSL_DEBUG_MSG( 2, ( "received ServerHello message" ) );
+            MBEDTLS_SSL_DEBUG_MSG(2, ("received ServerHello message"));
             break;
         case SSL_SERVER_HELLO_HRR:
-            MBEDTLS_SSL_DEBUG_MSG( 2, ( "received HelloRetryRequest message" ) );
-             /* If a client receives a second
-              * HelloRetryRequest in the same connection (i.e., where the ClientHello
-              * was itself in response to a HelloRetryRequest), it MUST abort the
-              * handshake with an "unexpected_message" alert.
-              */
-            if( handshake->hello_retry_request_count > 0 )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "Multiple HRRs received" ) );
-                MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE,
-                                    MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
-                return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
+            MBEDTLS_SSL_DEBUG_MSG(2, ("received HelloRetryRequest message"));
+            /* If a client receives a second
+             * HelloRetryRequest in the same connection (i.e., where the ClientHello
+             * was itself in response to a HelloRetryRequest), it MUST abort the
+             * handshake with an "unexpected_message" alert.
+             */
+            if (handshake->hello_retry_request_count > 0) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("Multiple HRRs received"));
+                MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE,
+                                             MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE);
+                return MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE;
             }
             /*
              * Clients must abort the handshake with an "illegal_parameter"
@@ -1473,14 +1445,13 @@
              * in the ClientHello.
              * In a PSK only key exchange that what we expect.
              */
-            if( ! mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1,
-                            ( "Unexpected HRR in pure PSK key exchange." ) );
+            if (!mbedtls_ssl_conf_tls13_some_ephemeral_enabled(ssl)) {
+                MBEDTLS_SSL_DEBUG_MSG(1,
+                                      ("Unexpected HRR in pure PSK key exchange."));
                 MBEDTLS_SSL_PEND_FATAL_ALERT(
-                            MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                            MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
-                return( MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
+                    MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+                    MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
+                return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
             }
 
             handshake->hello_retry_request_count++;
@@ -1490,44 +1461,43 @@
 
 cleanup:
 
-    return( ret );
+    return ret;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_check_server_hello_session_id_echo( mbedtls_ssl_context *ssl,
-                                                         const unsigned char **buf,
-                                                         const unsigned char *end )
+static int ssl_tls13_check_server_hello_session_id_echo(mbedtls_ssl_context *ssl,
+                                                        const unsigned char **buf,
+                                                        const unsigned char *end)
 {
     const unsigned char *p = *buf;
     size_t legacy_session_id_echo_len;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 1 );
-    legacy_session_id_echo_len = *p++ ;
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 1);
+    legacy_session_id_echo_len = *p++;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, legacy_session_id_echo_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, legacy_session_id_echo_len);
 
     /* legacy_session_id_echo */
-    if( ssl->session_negotiate->id_len != legacy_session_id_echo_len ||
-        memcmp( ssl->session_negotiate->id, p , legacy_session_id_echo_len ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_BUF( 3, "Expected Session ID",
-                               ssl->session_negotiate->id,
-                               ssl->session_negotiate->id_len );
-        MBEDTLS_SSL_DEBUG_BUF( 3, "Received Session ID", p,
-                               legacy_session_id_echo_len );
+    if (ssl->session_negotiate->id_len != legacy_session_id_echo_len ||
+        memcmp(ssl->session_negotiate->id, p, legacy_session_id_echo_len) != 0) {
+        MBEDTLS_SSL_DEBUG_BUF(3, "Expected Session ID",
+                              ssl->session_negotiate->id,
+                              ssl->session_negotiate->id_len);
+        MBEDTLS_SSL_DEBUG_BUF(3, "Received Session ID", p,
+                              legacy_session_id_echo_len);
 
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                                      MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+                                     MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
 
-        return( MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
+        return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
     }
 
     p += legacy_session_id_echo_len;
     *buf = p;
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "Session ID", ssl->session_negotiate->id,
-                            ssl->session_negotiate->id_len );
-    return( 0 );
+    MBEDTLS_SSL_DEBUG_BUF(3, "Session ID", ssl->session_negotiate->id,
+                          ssl->session_negotiate->id_len);
+    return 0;
 }
 
 /* Parse ServerHello message and configure context
@@ -1542,10 +1512,10 @@
  * } ServerHello;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_server_hello( mbedtls_ssl_context *ssl,
-                                         const unsigned char *buf,
-                                         const unsigned char *end,
-                                         int is_hrr )
+static int ssl_tls13_parse_server_hello(mbedtls_ssl_context *ssl,
+                                        const unsigned char *buf,
+                                        const unsigned char *end,
+                                        int is_hrr)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const unsigned char *p = buf;
@@ -1557,7 +1527,7 @@
     int fatal_alert = 0;
     uint32_t allowed_extensions_mask;
     int hs_msg_type = is_hrr ? MBEDTLS_SSL_TLS1_3_HS_HELLO_RETRY_REQUEST :
-                               MBEDTLS_SSL_HS_SERVER_HELLO;
+                      MBEDTLS_SSL_HS_SERVER_HELLO;
 
     /*
      * Check there is space for minimal fields
@@ -1568,10 +1538,10 @@
      * - cipher_suite               ( 2 bytes)
      * - legacy_compression_method  ( 1 byte )
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, MBEDTLS_SERVER_HELLO_RANDOM_LEN + 6 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, MBEDTLS_SERVER_HELLO_RANDOM_LEN + 6);
 
-    MBEDTLS_SSL_DEBUG_BUF( 4, "server hello", p, end - p );
-    MBEDTLS_SSL_DEBUG_BUF( 3, "server hello, version", p, 2 );
+    MBEDTLS_SSL_DEBUG_BUF(4, "server hello", p, end - p);
+    MBEDTLS_SSL_DEBUG_BUF(3, "server hello, version", p, 2);
 
     /* ...
      * ProtocolVersion legacy_version = 0x0303; // TLS 1.2
@@ -1579,12 +1549,11 @@
      * with ProtocolVersion defined as:
      * uint16 ProtocolVersion;
      */
-    if( mbedtls_ssl_read_version( p, ssl->conf->transport ) !=
-          MBEDTLS_SSL_VERSION_TLS1_2 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "Unsupported version of TLS." ) );
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION,
-                                      MBEDTLS_ERR_SSL_BAD_PROTOCOL_VERSION );
+    if (mbedtls_ssl_read_version(p, ssl->conf->transport) !=
+        MBEDTLS_SSL_VERSION_TLS1_2) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("Unsupported version of TLS."));
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION,
+                                     MBEDTLS_ERR_SSL_BAD_PROTOCOL_VERSION);
         ret = MBEDTLS_ERR_SSL_BAD_PROTOCOL_VERSION;
         goto cleanup;
     }
@@ -1596,12 +1565,11 @@
      * with Random defined as:
      * opaque Random[MBEDTLS_SERVER_HELLO_RANDOM_LEN];
      */
-    if( !is_hrr )
-    {
-        memcpy( &handshake->randbytes[MBEDTLS_CLIENT_HELLO_RANDOM_LEN], p,
-                MBEDTLS_SERVER_HELLO_RANDOM_LEN );
-        MBEDTLS_SSL_DEBUG_BUF( 3, "server hello, random bytes",
-                               p, MBEDTLS_SERVER_HELLO_RANDOM_LEN );
+    if (!is_hrr) {
+        memcpy(&handshake->randbytes[MBEDTLS_CLIENT_HELLO_RANDOM_LEN], p,
+               MBEDTLS_SERVER_HELLO_RANDOM_LEN);
+        MBEDTLS_SSL_DEBUG_BUF(3, "server hello, random bytes",
+                              p, MBEDTLS_SERVER_HELLO_RANDOM_LEN);
     }
     p += MBEDTLS_SERVER_HELLO_RANDOM_LEN;
 
@@ -1609,8 +1577,7 @@
      * opaque legacy_session_id_echo<0..32>;
      * ...
      */
-    if( ssl_tls13_check_server_hello_session_id_echo( ssl, &p, end ) != 0 )
-    {
+    if (ssl_tls13_check_server_hello_session_id_echo(ssl, &p, end) != 0) {
         fatal_alert = MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER;
         goto cleanup;
     }
@@ -1621,20 +1588,19 @@
      * with CipherSuite defined as:
      * uint8 CipherSuite[2];
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    cipher_suite = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    cipher_suite = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
 
-    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( cipher_suite );
+    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id(cipher_suite);
     /*
      * Check whether this ciphersuite is valid and offered.
      */
-    if( ( mbedtls_ssl_validate_ciphersuite( ssl, ciphersuite_info,
-                                            ssl->tls_version,
-                                            ssl->tls_version ) != 0 ) ||
-        !mbedtls_ssl_tls13_cipher_suite_is_offered( ssl, cipher_suite ) )
-    {
+    if ((mbedtls_ssl_validate_ciphersuite(ssl, ciphersuite_info,
+                                          ssl->tls_version,
+                                          ssl->tls_version) != 0) ||
+        !mbedtls_ssl_tls13_cipher_suite_is_offered(ssl, cipher_suite)) {
         fatal_alert = MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER;
     }
     /*
@@ -1643,40 +1609,37 @@
      * proposed in the HRR, we abort the handshake and send an
      * "illegal_parameter" alert.
      */
-    else if( ( !is_hrr ) && ( handshake->hello_retry_request_count > 0 ) &&
-             ( cipher_suite != ssl->session_negotiate->ciphersuite ) )
-    {
+    else if ((!is_hrr) && (handshake->hello_retry_request_count > 0) &&
+             (cipher_suite != ssl->session_negotiate->ciphersuite)) {
         fatal_alert = MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER;
     }
 
-    if( fatal_alert == MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid ciphersuite(%04x) parameter",
-                                    cipher_suite ) );
+    if (fatal_alert == MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("invalid ciphersuite(%04x) parameter",
+                                  cipher_suite));
         goto cleanup;
     }
 
     /* Configure ciphersuites */
-    mbedtls_ssl_optimize_checksum( ssl, ciphersuite_info );
+    mbedtls_ssl_optimize_checksum(ssl, ciphersuite_info);
 
     handshake->ciphersuite_info = ciphersuite_info;
     ssl->session_negotiate->ciphersuite = cipher_suite;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, chosen ciphersuite: ( %04x ) - %s",
-                                 cipher_suite, ciphersuite_info->name ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, chosen ciphersuite: ( %04x ) - %s",
+                              cipher_suite, ciphersuite_info->name));
 
 #if defined(MBEDTLS_HAVE_TIME)
-    ssl->session_negotiate->start = time( NULL );
+    ssl->session_negotiate->start = time(NULL);
 #endif /* MBEDTLS_HAVE_TIME */
 
     /* ...
      * uint8 legacy_compression_method = 0;
      * ...
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 1 );
-    if( p[0] != MBEDTLS_SSL_COMPRESS_NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad legacy compression method" ) );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 1);
+    if (p[0] != MBEDTLS_SSL_COMPRESS_NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad legacy compression method"));
         fatal_alert = MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER;
         goto cleanup;
     }
@@ -1690,96 +1653,93 @@
      *      opaque extension_data<0..2^16-1>;
      * } Extension;
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    extensions_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    extensions_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
     /* Check extensions do not go beyond the buffer of data. */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extensions_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, extensions_len);
     extensions_end = p + extensions_len;
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "server hello extensions", p, extensions_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "server hello extensions", p, extensions_len);
 
     handshake->received_extensions = MBEDTLS_SSL_EXT_MASK_NONE;
     allowed_extensions_mask = is_hrr ?
-                                  MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_HRR :
-                                  MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_SH;
+                              MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_HRR :
+                              MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_SH;
 
-    while( p < extensions_end )
-    {
+    while (p < extensions_end) {
         unsigned int extension_type;
         size_t extension_data_len;
         const unsigned char *extension_data_end;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, 4 );
-        extension_type = MBEDTLS_GET_UINT16_BE( p, 0 );
-        extension_data_len = MBEDTLS_GET_UINT16_BE( p, 2 );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, 4);
+        extension_type = MBEDTLS_GET_UINT16_BE(p, 0);
+        extension_data_len = MBEDTLS_GET_UINT16_BE(p, 2);
         p += 4;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, extension_data_len );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, extension_data_len);
         extension_data_end = p + extension_data_len;
 
         ret = mbedtls_ssl_tls13_check_received_extension(
-                  ssl, hs_msg_type, extension_type, allowed_extensions_mask );
-        if( ret != 0 )
-            return( ret );
+            ssl, hs_msg_type, extension_type, allowed_extensions_mask);
+        if (ret != 0) {
+            return ret;
+        }
 
-        switch( extension_type )
-        {
+        switch (extension_type) {
             case MBEDTLS_TLS_EXT_COOKIE:
 
-                ret = ssl_tls13_parse_cookie_ext( ssl,
-                                                  p, extension_data_end );
-                if( ret != 0 )
-                {
-                    MBEDTLS_SSL_DEBUG_RET( 1,
-                                           "ssl_tls13_parse_cookie_ext",
-                                           ret );
+                ret = ssl_tls13_parse_cookie_ext(ssl,
+                                                 p, extension_data_end);
+                if (ret != 0) {
+                    MBEDTLS_SSL_DEBUG_RET(1,
+                                          "ssl_tls13_parse_cookie_ext",
+                                          ret);
                     goto cleanup;
                 }
                 break;
 
             case MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS:
-                ret = ssl_tls13_parse_supported_versions_ext( ssl,
-                                                              p,
-                                                              extension_data_end );
-                if( ret != 0 )
+                ret = ssl_tls13_parse_supported_versions_ext(ssl,
+                                                             p,
+                                                             extension_data_end);
+                if (ret != 0) {
                     goto cleanup;
+                }
                 break;
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_PSK_ENABLED)
             case MBEDTLS_TLS_EXT_PRE_SHARED_KEY:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found pre_shared_key extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found pre_shared_key extension"));
 
-                if( ( ret = ssl_tls13_parse_server_pre_shared_key_ext(
-                                ssl, p, extension_data_end ) ) != 0 )
-                {
+                if ((ret = ssl_tls13_parse_server_pre_shared_key_ext(
+                         ssl, p, extension_data_end)) != 0) {
                     MBEDTLS_SSL_DEBUG_RET(
-                        1, ( "ssl_tls13_parse_server_pre_shared_key_ext" ), ret );
-                    return( ret );
+                        1, ("ssl_tls13_parse_server_pre_shared_key_ext"), ret);
+                    return ret;
                 }
                 break;
 #endif
 
             case MBEDTLS_TLS_EXT_KEY_SHARE:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found key_shares extension" ) );
-                if( ! mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
-                {
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found key_shares extension"));
+                if (!mbedtls_ssl_conf_tls13_some_ephemeral_enabled(ssl)) {
                     fatal_alert = MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_EXT;
                     goto cleanup;
                 }
 
-                if( is_hrr )
-                    ret = ssl_tls13_parse_hrr_key_share_ext( ssl,
-                                            p, extension_data_end );
-                else
-                    ret = ssl_tls13_parse_key_share_ext( ssl,
-                                            p, extension_data_end );
-                if( ret != 0 )
-                {
-                    MBEDTLS_SSL_DEBUG_RET( 1,
-                                           "ssl_tls13_parse_key_share_ext",
-                                           ret );
+                if (is_hrr) {
+                    ret = ssl_tls13_parse_hrr_key_share_ext(ssl,
+                                                            p, extension_data_end);
+                } else {
+                    ret = ssl_tls13_parse_key_share_ext(ssl,
+                                                        p, extension_data_end);
+                }
+                if (ret != 0) {
+                    MBEDTLS_SSL_DEBUG_RET(1,
+                                          "ssl_tls13_parse_key_share_ext",
+                                          ret);
                     goto cleanup;
                 }
                 break;
@@ -1792,30 +1752,26 @@
         p += extension_data_len;
     }
 
-    MBEDTLS_SSL_PRINT_EXTS( 3, hs_msg_type, handshake->received_extensions );
+    MBEDTLS_SSL_PRINT_EXTS(3, hs_msg_type, handshake->received_extensions);
 
 cleanup:
 
-    if( fatal_alert == MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_EXT )
-    {
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_EXT,
-                                      MBEDTLS_ERR_SSL_UNSUPPORTED_EXTENSION );
+    if (fatal_alert == MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_EXT) {
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_UNSUPPORTED_EXT,
+                                     MBEDTLS_ERR_SSL_UNSUPPORTED_EXTENSION);
         ret = MBEDTLS_ERR_SSL_UNSUPPORTED_EXTENSION;
-    }
-    else if ( fatal_alert == MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER )
-    {
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                                      MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER );
+    } else if (fatal_alert == MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER) {
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+                                     MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
         ret = MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
     }
-    return( ret );
+    return ret;
 }
 
 #if defined(MBEDTLS_DEBUG_C)
 static const char *ssl_tls13_get_kex_mode_str(int mode)
 {
-    switch( mode )
-    {
+    switch (mode) {
         case MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK:
             return "psk";
         case MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL:
@@ -1829,7 +1785,7 @@
 #endif /* MBEDTLS_DEBUG_C */
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_postprocess_server_hello( mbedtls_ssl_context *ssl )
+static int ssl_tls13_postprocess_server_hello(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_ssl_handshake_params *handshake = ssl->handshake;
@@ -1842,87 +1798,82 @@
      * 3) If only the key_share extension was received then the key
      *    exchange mode is EPHEMERAL-only.
      */
-    switch( handshake->received_extensions &
-            ( MBEDTLS_SSL_EXT_MASK( PRE_SHARED_KEY ) | MBEDTLS_SSL_EXT_MASK( KEY_SHARE ) ) )
-    {
+    switch (handshake->received_extensions &
+            (MBEDTLS_SSL_EXT_MASK(PRE_SHARED_KEY) | MBEDTLS_SSL_EXT_MASK(KEY_SHARE))) {
         /* Only the pre_shared_key extension was received */
-        case MBEDTLS_SSL_EXT_MASK( PRE_SHARED_KEY ):
+        case MBEDTLS_SSL_EXT_MASK(PRE_SHARED_KEY):
             handshake->key_exchange_mode = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK;
             break;
 
         /* Only the key_share extension was received */
-        case MBEDTLS_SSL_EXT_MASK( KEY_SHARE ):
+        case MBEDTLS_SSL_EXT_MASK(KEY_SHARE):
             handshake->key_exchange_mode = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL;
             break;
 
         /* Both the pre_shared_key and key_share extensions were received */
-        case ( MBEDTLS_SSL_EXT_MASK( PRE_SHARED_KEY ) | MBEDTLS_SSL_EXT_MASK( KEY_SHARE ) ):
+        case (MBEDTLS_SSL_EXT_MASK(PRE_SHARED_KEY) | MBEDTLS_SSL_EXT_MASK(KEY_SHARE)):
             handshake->key_exchange_mode = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL;
             break;
 
         /* Neither pre_shared_key nor key_share extension was received */
         default:
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "Unknown key exchange." ) );
+            MBEDTLS_SSL_DEBUG_MSG(1, ("Unknown key exchange."));
             ret = MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
             goto cleanup;
     }
 
-    if( !mbedtls_ssl_conf_tls13_check_kex_modes( ssl, handshake->key_exchange_mode ) )
-    {
+    if (!mbedtls_ssl_conf_tls13_check_kex_modes(ssl, handshake->key_exchange_mode)) {
         ret = MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
-        MBEDTLS_SSL_DEBUG_MSG( 2,
-                ( "Key exchange mode(%s) is not supported.",
-                ssl_tls13_get_kex_mode_str( handshake->key_exchange_mode ) ) );
+        MBEDTLS_SSL_DEBUG_MSG(2,
+                              ("Key exchange mode(%s) is not supported.",
+                               ssl_tls13_get_kex_mode_str(handshake->key_exchange_mode)));
         goto cleanup;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3,
-            ( "Selected key exchange mode: %s",
-              ssl_tls13_get_kex_mode_str( handshake->key_exchange_mode ) ) );
+    MBEDTLS_SSL_DEBUG_MSG(3,
+                          ("Selected key exchange mode: %s",
+                           ssl_tls13_get_kex_mode_str(handshake->key_exchange_mode)));
 
     /* Start the TLS 1.3 key schedule: Set the PSK and derive early secret.
      *
      * TODO: We don't have to do this in case we offered 0-RTT and the
      *       server accepted it. In this case, we could skip generating
      *       the early secret. */
-    ret = mbedtls_ssl_tls13_key_schedule_stage_early( ssl );
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_tls13_key_schedule_stage_early",
-                               ret );
+    ret = mbedtls_ssl_tls13_key_schedule_stage_early(ssl);
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_tls13_key_schedule_stage_early",
+                              ret);
         goto cleanup;
     }
 
-    ret = mbedtls_ssl_tls13_compute_handshake_transform( ssl );
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1,
-                               "mbedtls_ssl_tls13_compute_handshake_transform",
-                               ret );
+    ret = mbedtls_ssl_tls13_compute_handshake_transform(ssl);
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1,
+                              "mbedtls_ssl_tls13_compute_handshake_transform",
+                              ret);
         goto cleanup;
     }
 
-    mbedtls_ssl_set_inbound_transform( ssl, handshake->transform_handshake );
-    MBEDTLS_SSL_DEBUG_MSG( 1, ( "Switch to handshake keys for inbound traffic" ) );
+    mbedtls_ssl_set_inbound_transform(ssl, handshake->transform_handshake);
+    MBEDTLS_SSL_DEBUG_MSG(1, ("Switch to handshake keys for inbound traffic"));
     ssl->session_in = ssl->session_negotiate;
 
 cleanup:
-    if( ret != 0 )
-    {
+    if (ret != 0) {
         MBEDTLS_SSL_PEND_FATAL_ALERT(
             MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE,
-            MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE );
+            MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE);
     }
 
-    return( ret );
+    return ret;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_postprocess_hrr( mbedtls_ssl_context *ssl )
+static int ssl_tls13_postprocess_hrr(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    mbedtls_ssl_session_reset_msg_layer( ssl, 0 );
+    mbedtls_ssl_session_reset_msg_layer(ssl, 0);
 
     /*
      * We are going to re-generate a shared secret corresponding to the group
@@ -1930,11 +1881,12 @@
      * generated a shared secret in the first client hello.
      * Thus, reset the shared secret.
      */
-    ret = ssl_tls13_reset_key_share( ssl );
-    if( ret != 0 )
-        return( ret );
+    ret = ssl_tls13_reset_key_share(ssl);
+    if (ret != 0) {
+        return ret;
+    }
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -1942,64 +1894,62 @@
  * Handler for MBEDTLS_SSL_SERVER_HELLO
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_server_hello( mbedtls_ssl_context *ssl )
+static int ssl_tls13_process_server_hello(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *buf = NULL;
     size_t buf_len = 0;
     int is_hrr = 0;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> %s", __func__ ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> %s", __func__));
 
-    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_fetch_handshake_msg( ssl,
-                                             MBEDTLS_SSL_HS_SERVER_HELLO,
-                                             &buf, &buf_len ) );
+    MBEDTLS_SSL_PROC_CHK(mbedtls_ssl_tls13_fetch_handshake_msg(ssl,
+                                                               MBEDTLS_SSL_HS_SERVER_HELLO,
+                                                               &buf, &buf_len));
 
-    ret = ssl_tls13_preprocess_server_hello( ssl, buf, buf + buf_len );
-    if( ret < 0 )
+    ret = ssl_tls13_preprocess_server_hello(ssl, buf, buf + buf_len);
+    if (ret < 0) {
         goto cleanup;
-    else
-        is_hrr = ( ret == SSL_SERVER_HELLO_HRR );
+    } else {
+        is_hrr = (ret == SSL_SERVER_HELLO_HRR);
+    }
 
-    if( ret == SSL_SERVER_HELLO_TLS1_2 )
-    {
+    if (ret == SSL_SERVER_HELLO_TLS1_2) {
         ret = 0;
         goto cleanup;
     }
 
-    MBEDTLS_SSL_PROC_CHK( ssl_tls13_parse_server_hello( ssl, buf,
-                                                        buf + buf_len,
-                                                        is_hrr ) );
-    if( is_hrr )
-        MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_reset_transcript_for_hrr( ssl ) );
-
-    mbedtls_ssl_add_hs_msg_to_checksum( ssl, MBEDTLS_SSL_HS_SERVER_HELLO,
-                                        buf, buf_len );
-
-    if( is_hrr )
-    {
-        MBEDTLS_SSL_PROC_CHK( ssl_tls13_postprocess_hrr( ssl ) );
-#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
-    /* If not offering early data, the client sends a dummy CCS record
-     * immediately before its second flight. This may either be before
-     * its second ClientHello or before its encrypted handshake flight.
-     */
-        mbedtls_ssl_handshake_set_state( ssl,
-            MBEDTLS_SSL_CLIENT_CCS_BEFORE_2ND_CLIENT_HELLO );
-#else
-        mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_HELLO );
-#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+    MBEDTLS_SSL_PROC_CHK(ssl_tls13_parse_server_hello(ssl, buf,
+                                                      buf + buf_len,
+                                                      is_hrr));
+    if (is_hrr) {
+        MBEDTLS_SSL_PROC_CHK(mbedtls_ssl_reset_transcript_for_hrr(ssl));
     }
-    else
-    {
-        MBEDTLS_SSL_PROC_CHK( ssl_tls13_postprocess_server_hello( ssl ) );
-        mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_ENCRYPTED_EXTENSIONS );
+
+    mbedtls_ssl_add_hs_msg_to_checksum(ssl, MBEDTLS_SSL_HS_SERVER_HELLO,
+                                       buf, buf_len);
+
+    if (is_hrr) {
+        MBEDTLS_SSL_PROC_CHK(ssl_tls13_postprocess_hrr(ssl));
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+        /* If not offering early data, the client sends a dummy CCS record
+         * immediately before its second flight. This may either be before
+         * its second ClientHello or before its encrypted handshake flight.
+         */
+        mbedtls_ssl_handshake_set_state(ssl,
+                                        MBEDTLS_SSL_CLIENT_CCS_BEFORE_2ND_CLIENT_HELLO);
+#else
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_HELLO);
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+    } else {
+        MBEDTLS_SSL_PROC_CHK(ssl_tls13_postprocess_server_hello(ssl));
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_ENCRYPTED_EXTENSIONS);
     }
 
 cleanup:
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= %s ( %s )", __func__,
-                                is_hrr?"HelloRetryRequest":"ServerHello" ) );
-    return( ret );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= %s ( %s )", __func__,
+                              is_hrr ? "HelloRetryRequest" : "ServerHello"));
+    return ret;
 }
 
 /*
@@ -2017,9 +1967,9 @@
  * } EncryptedExtensions;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_encrypted_extensions( mbedtls_ssl_context *ssl,
-                                                 const unsigned char *buf,
-                                                 const unsigned char *end )
+static int ssl_tls13_parse_encrypted_extensions(mbedtls_ssl_context *ssl,
+                                                const unsigned char *buf,
+                                                const unsigned char *end)
 {
     int ret = 0;
     size_t extensions_len;
@@ -2027,18 +1977,17 @@
     const unsigned char *extensions_end;
     mbedtls_ssl_handshake_params *handshake = ssl->handshake;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    extensions_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    extensions_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "encrypted extensions", p, extensions_len );
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extensions_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "encrypted extensions", p, extensions_len);
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, extensions_len);
     extensions_end = p + extensions_len;
 
     handshake->received_extensions = MBEDTLS_SSL_EXT_MASK_NONE;
 
-    while( p < extensions_end )
-    {
+    while (p < extensions_end) {
         unsigned int extension_type;
         size_t extension_data_len;
 
@@ -2048,28 +1997,27 @@
          *     opaque extension_data<0..2^16-1>;
          * } Extension;
          */
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, 4 );
-        extension_type = MBEDTLS_GET_UINT16_BE( p, 0 );
-        extension_data_len = MBEDTLS_GET_UINT16_BE( p, 2 );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, 4);
+        extension_type = MBEDTLS_GET_UINT16_BE(p, 0);
+        extension_data_len = MBEDTLS_GET_UINT16_BE(p, 2);
         p += 4;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, extension_data_len );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, extension_data_len);
 
         ret = mbedtls_ssl_tls13_check_received_extension(
-                  ssl, MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS, extension_type,
-                  MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_EE );
-        if( ret != 0 )
-            return( ret );
+            ssl, MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS, extension_type,
+            MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_EE);
+        if (ret != 0) {
+            return ret;
+        }
 
-        switch( extension_type )
-        {
+        switch (extension_type) {
 #if defined(MBEDTLS_SSL_ALPN)
             case MBEDTLS_TLS_EXT_ALPN:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found alpn extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found alpn extension"));
 
-                if( ( ret = ssl_tls13_parse_alpn_ext( ssl, p, (size_t)extension_data_len ) ) != 0 )
-                {
-                    return( ret );
+                if ((ret = ssl_tls13_parse_alpn_ext(ssl, p, (size_t) extension_data_len)) != 0) {
+                    return ret;
                 }
 
                 break;
@@ -2078,12 +2026,11 @@
 #if defined(MBEDTLS_SSL_EARLY_DATA)
             case MBEDTLS_TLS_EXT_EARLY_DATA:
 
-                if( extension_data_len != 0 )
-                {
+                if (extension_data_len != 0) {
                     /* The message must be empty. */
-                    MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
-                                                  MBEDTLS_ERR_SSL_DECODE_ERROR );
-                    return( MBEDTLS_ERR_SSL_DECODE_ERROR );
+                    MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
+                                                 MBEDTLS_ERR_SSL_DECODE_ERROR);
+                    return MBEDTLS_ERR_SSL_DECODE_ERROR;
                 }
 
                 break;
@@ -2092,70 +2039,69 @@
             default:
                 MBEDTLS_SSL_PRINT_EXT(
                     3, MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS,
-                    extension_type, "( ignored )" );
+                    extension_type, "( ignored )");
                 break;
         }
 
         p += extension_data_len;
     }
 
-    MBEDTLS_SSL_PRINT_EXTS( 3, MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS,
-                            handshake->received_extensions );
+    MBEDTLS_SSL_PRINT_EXTS(3, MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS,
+                           handshake->received_extensions);
 
     /* Check that we consumed all the message. */
-    if( p != end )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "EncryptedExtension lengths misaligned" ) );
-        MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
-                                      MBEDTLS_ERR_SSL_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_DECODE_ERROR );
+    if (p != end) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("EncryptedExtension lengths misaligned"));
+        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
+                                     MBEDTLS_ERR_SSL_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
 
-    return( ret );
+    return ret;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_encrypted_extensions( mbedtls_ssl_context *ssl )
+static int ssl_tls13_process_encrypted_extensions(mbedtls_ssl_context *ssl)
 {
     int ret;
     unsigned char *buf;
     size_t buf_len;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse encrypted extensions" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse encrypted extensions"));
 
-    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_fetch_handshake_msg( ssl,
-                                             MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS,
-                                             &buf, &buf_len ) );
+    MBEDTLS_SSL_PROC_CHK(mbedtls_ssl_tls13_fetch_handshake_msg(ssl,
+                                                               MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS,
+                                                               &buf, &buf_len));
 
     /* Process the message contents */
     MBEDTLS_SSL_PROC_CHK(
-        ssl_tls13_parse_encrypted_extensions( ssl, buf, buf + buf_len ) );
+        ssl_tls13_parse_encrypted_extensions(ssl, buf, buf + buf_len));
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-    if( ssl->handshake->received_extensions &
-        MBEDTLS_SSL_EXT_MASK( EARLY_DATA ) )
-    {
+    if (ssl->handshake->received_extensions &
+        MBEDTLS_SSL_EXT_MASK(EARLY_DATA)) {
         ssl->early_data_status = MBEDTLS_SSL_EARLY_DATA_STATUS_ACCEPTED;
     }
 #endif
 
-    mbedtls_ssl_add_hs_msg_to_checksum( ssl, MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS,
-                                        buf, buf_len );
+    mbedtls_ssl_add_hs_msg_to_checksum(ssl, MBEDTLS_SSL_HS_ENCRYPTED_EXTENSIONS,
+                                       buf, buf_len);
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED)
-    if( mbedtls_ssl_tls13_key_exchange_mode_with_psk( ssl ) )
-        mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_FINISHED );
-    else
-        mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CERTIFICATE_REQUEST );
+    if (mbedtls_ssl_tls13_key_exchange_mode_with_psk(ssl)) {
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_FINISHED);
+    } else {
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CERTIFICATE_REQUEST);
+    }
 #else
     ((void) ssl);
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_FINISHED );
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_FINISHED);
 #endif
 
 cleanup:
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse encrypted extensions" ) );
-    return( ret );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse encrypted extensions"));
+    return ret;
 
 }
 
@@ -2174,27 +2120,25 @@
  * indicating if a Certificate Request is expected or not.
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_certificate_request_coordinate( mbedtls_ssl_context *ssl )
+static int ssl_tls13_certificate_request_coordinate(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if( ( ret = mbedtls_ssl_read_record( ssl, 0 ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_read_record(ssl, 0)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_read_record", ret);
+        return ret;
     }
     ssl->keep_current_message = 1;
 
-    if( ( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) &&
-        ( ssl->in_msg[0] == MBEDTLS_SSL_HS_CERTIFICATE_REQUEST ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "got a certificate request" ) );
-        return( SSL_CERTIFICATE_REQUEST_EXPECT_REQUEST );
+    if ((ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE) &&
+        (ssl->in_msg[0] == MBEDTLS_SSL_HS_CERTIFICATE_REQUEST)) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("got a certificate request"));
+        return SSL_CERTIFICATE_REQUEST_EXPECT_REQUEST;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "got no certificate request" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("got no certificate request"));
 
-    return( SSL_CERTIFICATE_REQUEST_SKIP );
+    return SSL_CERTIFICATE_REQUEST_SKIP;
 }
 
 /*
@@ -2206,9 +2150,9 @@
  * } CertificateRequest;
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_certificate_request( mbedtls_ssl_context *ssl,
-                                                const unsigned char *buf,
-                                                const unsigned char *end )
+static int ssl_tls13_parse_certificate_request(mbedtls_ssl_context *ssl,
+                                               const unsigned char *buf,
+                                               const unsigned char *end)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const unsigned char *p = buf;
@@ -2221,25 +2165,23 @@
      * opaque certificate_request_context<0..2^8-1>
      * ...
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 1 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 1);
     certificate_request_context_len = (size_t) p[0];
     p += 1;
 
-    if( certificate_request_context_len > 0 )
-    {
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, certificate_request_context_len );
-        MBEDTLS_SSL_DEBUG_BUF( 3, "Certificate Request Context",
-                               p, certificate_request_context_len );
+    if (certificate_request_context_len > 0) {
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, certificate_request_context_len);
+        MBEDTLS_SSL_DEBUG_BUF(3, "Certificate Request Context",
+                              p, certificate_request_context_len);
 
         handshake->certificate_request_context =
-                mbedtls_calloc( 1, certificate_request_context_len );
-        if( handshake->certificate_request_context == NULL )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "buffer too small" ) );
-            return ( MBEDTLS_ERR_SSL_ALLOC_FAILED );
+            mbedtls_calloc(1, certificate_request_context_len);
+        if (handshake->certificate_request_context == NULL) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("buffer too small"));
+            return MBEDTLS_ERR_SSL_ALLOC_FAILED;
         }
-        memcpy( handshake->certificate_request_context, p,
-                certificate_request_context_len );
+        memcpy(handshake->certificate_request_context, p,
+               certificate_request_context_len);
         p += certificate_request_context_len;
     }
 
@@ -2247,63 +2189,62 @@
      * Extension extensions<2..2^16-1>;
      * ...
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    extensions_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    extensions_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extensions_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, extensions_len);
     extensions_end = p + extensions_len;
 
     handshake->received_extensions = MBEDTLS_SSL_EXT_MASK_NONE;
 
-    while( p < extensions_end )
-    {
+    while (p < extensions_end) {
         unsigned int extension_type;
         size_t extension_data_len;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, 4 );
-        extension_type = MBEDTLS_GET_UINT16_BE( p, 0 );
-        extension_data_len = MBEDTLS_GET_UINT16_BE( p, 2 );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, 4);
+        extension_type = MBEDTLS_GET_UINT16_BE(p, 0);
+        extension_data_len = MBEDTLS_GET_UINT16_BE(p, 2);
         p += 4;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, extensions_end, extension_data_len );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, extensions_end, extension_data_len);
 
         ret = mbedtls_ssl_tls13_check_received_extension(
-                  ssl, MBEDTLS_SSL_HS_CERTIFICATE_REQUEST, extension_type,
-                  MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_CR );
-        if( ret != 0 )
-            return( ret );
+            ssl, MBEDTLS_SSL_HS_CERTIFICATE_REQUEST, extension_type,
+            MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_CR);
+        if (ret != 0) {
+            return ret;
+        }
 
-        switch( extension_type )
-        {
+        switch (extension_type) {
             case MBEDTLS_TLS_EXT_SIG_ALG:
-                MBEDTLS_SSL_DEBUG_MSG( 3,
-                        ( "found signature algorithms extension" ) );
-                ret = mbedtls_ssl_parse_sig_alg_ext( ssl, p,
-                                                     p + extension_data_len );
-                if( ret != 0 )
-                    return( ret );
+                MBEDTLS_SSL_DEBUG_MSG(3,
+                                      ("found signature algorithms extension"));
+                ret = mbedtls_ssl_parse_sig_alg_ext(ssl, p,
+                                                    p + extension_data_len);
+                if (ret != 0) {
+                    return ret;
+                }
 
                 break;
 
             default:
                 MBEDTLS_SSL_PRINT_EXT(
                     3, MBEDTLS_SSL_HS_CERTIFICATE_REQUEST,
-                    extension_type, "( ignored )" );
+                    extension_type, "( ignored )");
                 break;
         }
 
         p += extension_data_len;
     }
 
-    MBEDTLS_SSL_PRINT_EXTS( 3, MBEDTLS_SSL_HS_CERTIFICATE_REQUEST,
-                            handshake->received_extensions );
+    MBEDTLS_SSL_PRINT_EXTS(3, MBEDTLS_SSL_HS_CERTIFICATE_REQUEST,
+                           handshake->received_extensions);
 
     /* Check that we consumed all the message. */
-    if( p != end )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1,
-            ( "CertificateRequest misaligned" ) );
+    if (p != end) {
+        MBEDTLS_SSL_DEBUG_MSG(1,
+                              ("CertificateRequest misaligned"));
         goto decode_error;
     }
 
@@ -2311,98 +2252,94 @@
      *
      * The "signature_algorithms" extension MUST be specified
      */
-    if( ( handshake->received_extensions & MBEDTLS_SSL_EXT_MASK( SIG_ALG ) ) == 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3,
-            ( "no signature algorithms extension found" ) );
+    if ((handshake->received_extensions & MBEDTLS_SSL_EXT_MASK(SIG_ALG)) == 0) {
+        MBEDTLS_SSL_DEBUG_MSG(3,
+                              ("no signature algorithms extension found"));
         goto decode_error;
     }
 
     ssl->handshake->client_auth = 1;
-    return( 0 );
+    return 0;
 
 decode_error:
-    MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
-                                  MBEDTLS_ERR_SSL_DECODE_ERROR );
-    return( MBEDTLS_ERR_SSL_DECODE_ERROR );
+    MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
+                                 MBEDTLS_ERR_SSL_DECODE_ERROR);
+    return MBEDTLS_ERR_SSL_DECODE_ERROR;
 }
 
 /*
  * Handler for  MBEDTLS_SSL_CERTIFICATE_REQUEST
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_certificate_request( mbedtls_ssl_context *ssl )
+static int ssl_tls13_process_certificate_request(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate request" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse certificate request"));
 
-    MBEDTLS_SSL_PROC_CHK_NEG( ssl_tls13_certificate_request_coordinate( ssl ) );
+    MBEDTLS_SSL_PROC_CHK_NEG(ssl_tls13_certificate_request_coordinate(ssl));
 
-    if( ret == SSL_CERTIFICATE_REQUEST_EXPECT_REQUEST )
-    {
+    if (ret == SSL_CERTIFICATE_REQUEST_EXPECT_REQUEST) {
         unsigned char *buf;
         size_t buf_len;
 
-        MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_fetch_handshake_msg( ssl,
-                                            MBEDTLS_SSL_HS_CERTIFICATE_REQUEST,
-                                            &buf, &buf_len ) );
+        MBEDTLS_SSL_PROC_CHK(mbedtls_ssl_tls13_fetch_handshake_msg(ssl,
+                                                                   MBEDTLS_SSL_HS_CERTIFICATE_REQUEST,
+                                                                   &buf, &buf_len));
 
-        MBEDTLS_SSL_PROC_CHK( ssl_tls13_parse_certificate_request( ssl,
-                                              buf, buf + buf_len ) );
+        MBEDTLS_SSL_PROC_CHK(ssl_tls13_parse_certificate_request(ssl,
+                                                                 buf, buf + buf_len));
 
-        mbedtls_ssl_add_hs_msg_to_checksum( ssl, MBEDTLS_SSL_HS_CERTIFICATE_REQUEST,
-                                            buf, buf_len );
-    }
-    else if( ret == SSL_CERTIFICATE_REQUEST_SKIP )
-    {
+        mbedtls_ssl_add_hs_msg_to_checksum(ssl, MBEDTLS_SSL_HS_CERTIFICATE_REQUEST,
+                                           buf, buf_len);
+    } else if (ret == SSL_CERTIFICATE_REQUEST_SKIP) {
         ret = 0;
-    }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
         ret = MBEDTLS_ERR_SSL_INTERNAL_ERROR;
         goto cleanup;
     }
 
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_CERTIFICATE );
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_CERTIFICATE);
 
 cleanup:
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse certificate request" ) );
-    return( ret );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse certificate request"));
+    return ret;
 }
 
 /*
  * Handler for MBEDTLS_SSL_SERVER_CERTIFICATE
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_server_certificate( mbedtls_ssl_context *ssl )
+static int ssl_tls13_process_server_certificate(mbedtls_ssl_context *ssl)
 {
     int ret;
 
-    ret = mbedtls_ssl_tls13_process_certificate( ssl );
-    if( ret != 0 )
-        return( ret );
+    ret = mbedtls_ssl_tls13_process_certificate(ssl);
+    if (ret != 0) {
+        return ret;
+    }
 
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CERTIFICATE_VERIFY );
-    return( 0 );
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CERTIFICATE_VERIFY);
+    return 0;
 }
 
 /*
  * Handler for MBEDTLS_SSL_CERTIFICATE_VERIFY
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_certificate_verify( mbedtls_ssl_context *ssl )
+static int ssl_tls13_process_certificate_verify(mbedtls_ssl_context *ssl)
 {
     int ret;
 
-    ret = mbedtls_ssl_tls13_process_certificate_verify( ssl );
-    if( ret != 0 )
-        return( ret );
+    ret = mbedtls_ssl_tls13_process_certificate_verify(ssl);
+    if (ret != 0) {
+        return ret;
+    }
 
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_FINISHED );
-    return( 0 );
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_FINISHED);
+    return 0;
 }
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED */
 
@@ -2410,74 +2347,70 @@
  * Handler for MBEDTLS_SSL_SERVER_FINISHED
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_server_finished( mbedtls_ssl_context *ssl )
+static int ssl_tls13_process_server_finished(mbedtls_ssl_context *ssl)
 {
     int ret;
 
-    ret = mbedtls_ssl_tls13_process_finished_message( ssl );
-    if( ret != 0 )
-        return( ret );
+    ret = mbedtls_ssl_tls13_process_finished_message(ssl);
+    if (ret != 0) {
+        return ret;
+    }
 
-    ret = mbedtls_ssl_tls13_compute_application_transform( ssl );
-    if( ret != 0 )
-    {
+    ret = mbedtls_ssl_tls13_compute_application_transform(ssl);
+    if (ret != 0) {
         MBEDTLS_SSL_PEND_FATAL_ALERT(
-                MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE,
-                MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE );
-        return( ret );
+            MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE,
+            MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE);
+        return ret;
     }
 
 #if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
     mbedtls_ssl_handshake_set_state(
         ssl,
-        MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED );
+        MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED);
 #else
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_CERTIFICATE );
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_CERTIFICATE);
 #endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Handler for MBEDTLS_SSL_CLIENT_CERTIFICATE
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_client_certificate( mbedtls_ssl_context *ssl )
+static int ssl_tls13_write_client_certificate(mbedtls_ssl_context *ssl)
 {
     int non_empty_certificate_msg = 0;
 
-    MBEDTLS_SSL_DEBUG_MSG( 1,
-                  ( "Switch to handshake traffic keys for outbound traffic" ) );
-    mbedtls_ssl_set_outbound_transform( ssl, ssl->handshake->transform_handshake );
+    MBEDTLS_SSL_DEBUG_MSG(1,
+                          ("Switch to handshake traffic keys for outbound traffic"));
+    mbedtls_ssl_set_outbound_transform(ssl, ssl->handshake->transform_handshake);
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED)
-    if( ssl->handshake->client_auth )
-    {
-        int ret = mbedtls_ssl_tls13_write_certificate( ssl );
-        if( ret != 0 )
-            return( ret );
+    if (ssl->handshake->client_auth) {
+        int ret = mbedtls_ssl_tls13_write_certificate(ssl);
+        if (ret != 0) {
+            return ret;
+        }
 
-        if( mbedtls_ssl_own_cert( ssl ) != NULL )
+        if (mbedtls_ssl_own_cert(ssl) != NULL) {
             non_empty_certificate_msg = 1;
-    }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "skip write certificate" ) );
+        }
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("skip write certificate"));
     }
 #endif
 
-   if( non_empty_certificate_msg )
-   {
-        mbedtls_ssl_handshake_set_state( ssl,
-                                         MBEDTLS_SSL_CLIENT_CERTIFICATE_VERIFY );
-   }
-   else
-   {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "skip write certificate verify" ) );
-        mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_FINISHED );
-   }
+    if (non_empty_certificate_msg) {
+        mbedtls_ssl_handshake_set_state(ssl,
+                                        MBEDTLS_SSL_CLIENT_CERTIFICATE_VERIFY);
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("skip write certificate verify"));
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_FINISHED);
+    }
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED)
@@ -2485,14 +2418,15 @@
  * Handler for MBEDTLS_SSL_CLIENT_CERTIFICATE_VERIFY
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_client_certificate_verify( mbedtls_ssl_context *ssl )
+static int ssl_tls13_write_client_certificate_verify(mbedtls_ssl_context *ssl)
 {
-    int ret = mbedtls_ssl_tls13_write_certificate_verify( ssl );
+    int ret = mbedtls_ssl_tls13_write_certificate_verify(ssl);
 
-    if( ret == 0 )
-        mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_FINISHED );
+    if (ret == 0) {
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_FINISHED);
+    }
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED */
 
@@ -2500,56 +2434,56 @@
  * Handler for MBEDTLS_SSL_CLIENT_FINISHED
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_write_client_finished( mbedtls_ssl_context *ssl )
+static int ssl_tls13_write_client_finished(mbedtls_ssl_context *ssl)
 {
     int ret;
 
-    ret = mbedtls_ssl_tls13_write_finished_message( ssl );
-    if( ret != 0 )
-        return( ret );
-
-    ret = mbedtls_ssl_tls13_compute_resumption_master_secret( ssl );
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1,
-                "mbedtls_ssl_tls13_compute_resumption_master_secret ", ret );
-        return ( ret );
+    ret = mbedtls_ssl_tls13_write_finished_message(ssl);
+    if (ret != 0) {
+        return ret;
     }
 
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_FLUSH_BUFFERS );
-    return( 0 );
+    ret = mbedtls_ssl_tls13_compute_resumption_master_secret(ssl);
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1,
+                              "mbedtls_ssl_tls13_compute_resumption_master_secret ", ret);
+        return ret;
+    }
+
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_FLUSH_BUFFERS);
+    return 0;
 }
 
 /*
  * Handler for MBEDTLS_SSL_FLUSH_BUFFERS
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_flush_buffers( mbedtls_ssl_context *ssl )
+static int ssl_tls13_flush_buffers(mbedtls_ssl_context *ssl)
 {
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_HANDSHAKE_WRAPUP );
-    return( 0 );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("handshake: done"));
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_WRAPUP);
+    return 0;
 }
 
 /*
  * Handler for MBEDTLS_SSL_HANDSHAKE_WRAPUP
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_handshake_wrapup( mbedtls_ssl_context *ssl )
+static int ssl_tls13_handshake_wrapup(mbedtls_ssl_context *ssl)
 {
 
-    mbedtls_ssl_tls13_handshake_wrapup( ssl );
+    mbedtls_ssl_tls13_handshake_wrapup(ssl);
 
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_HANDSHAKE_OVER );
-    return( 0 );
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_OVER);
+    return 0;
 }
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_new_session_ticket_exts( mbedtls_ssl_context *ssl,
-                                                    const unsigned char *buf,
-                                                    const unsigned char *end )
+static int ssl_tls13_parse_new_session_ticket_exts(mbedtls_ssl_context *ssl,
+                                                   const unsigned char *buf,
+                                                   const unsigned char *end)
 {
     mbedtls_ssl_handshake_params *handshake = ssl->handshake;
     const unsigned char *p = buf;
@@ -2557,40 +2491,37 @@
 
     handshake->received_extensions = MBEDTLS_SSL_EXT_MASK_NONE;
 
-    while( p < end )
-    {
+    while (p < end) {
         unsigned int extension_type;
         size_t extension_data_len;
         int ret;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 4 );
-        extension_type = MBEDTLS_GET_UINT16_BE( p, 0 );
-        extension_data_len = MBEDTLS_GET_UINT16_BE( p, 2 );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 4);
+        extension_type = MBEDTLS_GET_UINT16_BE(p, 0);
+        extension_data_len = MBEDTLS_GET_UINT16_BE(p, 2);
         p += 4;
 
-        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extension_data_len );
+        MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, extension_data_len);
 
         ret = mbedtls_ssl_tls13_check_received_extension(
-                  ssl, MBEDTLS_SSL_HS_NEW_SESSION_TICKET, extension_type,
-                  MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_NST );
-        if( ret != 0 )
-            return( ret );
+            ssl, MBEDTLS_SSL_HS_NEW_SESSION_TICKET, extension_type,
+            MBEDTLS_SSL_TLS1_3_ALLOWED_EXTS_OF_NST);
+        if (ret != 0) {
+            return ret;
+        }
 
-        switch( extension_type )
-        {
+        switch (extension_type) {
 #if defined(MBEDTLS_SSL_EARLY_DATA)
             case MBEDTLS_TLS_EXT_EARLY_DATA:
-                if( extension_data_len != 4 )
-                {
+                if (extension_data_len != 4) {
                     MBEDTLS_SSL_PEND_FATAL_ALERT(
                         MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR,
-                        MBEDTLS_ERR_SSL_DECODE_ERROR );
-                    return( MBEDTLS_ERR_SSL_DECODE_ERROR );
+                        MBEDTLS_ERR_SSL_DECODE_ERROR);
+                    return MBEDTLS_ERR_SSL_DECODE_ERROR;
                 }
-                if( ssl->session != NULL )
-                {
+                if (ssl->session != NULL) {
                     ssl->session->ticket_flags |=
-                            MBEDTLS_SSL_TLS1_3_TICKET_ALLOW_EARLY_DATA;
+                        MBEDTLS_SSL_TLS1_3_TICKET_ALLOW_EARLY_DATA;
                 }
                 break;
 #endif /* MBEDTLS_SSL_EARLY_DATA */
@@ -2598,17 +2529,17 @@
             default:
                 MBEDTLS_SSL_PRINT_EXT(
                     3, MBEDTLS_SSL_HS_NEW_SESSION_TICKET,
-                    extension_type, "( ignored )" );
+                    extension_type, "( ignored )");
                 break;
         }
 
         p +=  extension_data_len;
     }
 
-    MBEDTLS_SSL_PRINT_EXTS( 3, MBEDTLS_SSL_HS_NEW_SESSION_TICKET,
-                            handshake->received_extensions );
+    MBEDTLS_SSL_PRINT_EXTS(3, MBEDTLS_SSL_HS_NEW_SESSION_TICKET,
+                           handshake->received_extensions);
 
-    return( 0 );
+    return 0;
 }
 
 /*
@@ -2624,11 +2555,11 @@
  *
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_parse_new_session_ticket( mbedtls_ssl_context *ssl,
-                                               unsigned char *buf,
-                                               unsigned char *end,
-                                               unsigned char **ticket_nonce,
-                                               size_t *ticket_nonce_len )
+static int ssl_tls13_parse_new_session_ticket(mbedtls_ssl_context *ssl,
+                                              unsigned char *buf,
+                                              unsigned char *end,
+                                              unsigned char **ticket_nonce,
+                                              size_t *ticket_nonce_len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *p = buf;
@@ -2644,77 +2575,74 @@
      *    ticket_age_add    4 bytes
      *    ticket_nonce_len  1 byte
      */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 9 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 9);
 
-    session->ticket_lifetime = MBEDTLS_GET_UINT32_BE( p, 0 );
-    MBEDTLS_SSL_DEBUG_MSG( 3,
-                           ( "ticket_lifetime: %u",
-                             ( unsigned int )session->ticket_lifetime ) );
+    session->ticket_lifetime = MBEDTLS_GET_UINT32_BE(p, 0);
+    MBEDTLS_SSL_DEBUG_MSG(3,
+                          ("ticket_lifetime: %u",
+                           (unsigned int) session->ticket_lifetime));
 
-    session->ticket_age_add = MBEDTLS_GET_UINT32_BE( p, 4 );
-    MBEDTLS_SSL_DEBUG_MSG( 3,
-                           ( "ticket_age_add: %u",
-                             ( unsigned int )session->ticket_age_add ) );
+    session->ticket_age_add = MBEDTLS_GET_UINT32_BE(p, 4);
+    MBEDTLS_SSL_DEBUG_MSG(3,
+                          ("ticket_age_add: %u",
+                           (unsigned int) session->ticket_age_add));
 
     *ticket_nonce_len = p[8];
     p += 9;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, *ticket_nonce_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, *ticket_nonce_len);
     *ticket_nonce = p;
-    MBEDTLS_SSL_DEBUG_BUF( 3, "ticket_nonce:", *ticket_nonce, *ticket_nonce_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "ticket_nonce:", *ticket_nonce, *ticket_nonce_len);
     p += *ticket_nonce_len;
 
     /* Ticket */
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    ticket_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    ticket_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, ticket_len );
-    MBEDTLS_SSL_DEBUG_BUF( 3, "received ticket", p, ticket_len ) ;
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, ticket_len);
+    MBEDTLS_SSL_DEBUG_BUF(3, "received ticket", p, ticket_len);
 
     /* Check if we previously received a ticket already. */
-    if( session->ticket != NULL || session->ticket_len > 0 )
-    {
-        mbedtls_free( session->ticket );
+    if (session->ticket != NULL || session->ticket_len > 0) {
+        mbedtls_free(session->ticket);
         session->ticket = NULL;
         session->ticket_len = 0;
     }
 
-    if( ( ticket = mbedtls_calloc( 1, ticket_len ) ) == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "ticket alloc failed" ) );
-        return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
+    if ((ticket = mbedtls_calloc(1, ticket_len)) == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("ticket alloc failed"));
+        return MBEDTLS_ERR_SSL_ALLOC_FAILED;
     }
-    memcpy( ticket, p, ticket_len );
+    memcpy(ticket, p, ticket_len);
     p += ticket_len;
     session->ticket = ticket;
     session->ticket_len = ticket_len;
 
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
-    extensions_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 2);
+    extensions_len = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
-    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extensions_len );
+    MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, extensions_len);
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "ticket extension", p, extensions_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "ticket extension", p, extensions_len);
 
-    ret = ssl_tls13_parse_new_session_ticket_exts( ssl, p, p + extensions_len );
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1,
-                               "ssl_tls13_parse_new_session_ticket_exts",
-                               ret );
-        return( ret );
+    ret = ssl_tls13_parse_new_session_ticket_exts(ssl, p, p + extensions_len);
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1,
+                              "ssl_tls13_parse_new_session_ticket_exts",
+                              ret);
+        return ret;
     }
 
     /* session has been updated, allow export */
     session->exported = 0;
 
-    return( 0 );
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_postprocess_new_session_ticket( mbedtls_ssl_context *ssl,
-                                                     unsigned char *ticket_nonce,
-                                                     size_t ticket_nonce_len )
+static int ssl_tls13_postprocess_new_session_ticket(mbedtls_ssl_context *ssl,
+                                                    unsigned char *ticket_nonce,
+                                                    size_t ticket_nonce_len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_ssl_session *session = ssl->session;
@@ -2724,28 +2652,26 @@
 
 #if defined(MBEDTLS_HAVE_TIME)
     /* Store ticket creation time */
-    session->ticket_received = mbedtls_time( NULL );
+    session->ticket_received = mbedtls_time(NULL);
 #endif
 
-    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( session->ciphersuite );
-    if( ciphersuite_info == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id(session->ciphersuite);
+    if (ciphersuite_info == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
-    psa_hash_alg = mbedtls_psa_translate_md( ciphersuite_info->mac );
-    hash_length = PSA_HASH_LENGTH( psa_hash_alg );
-    if( hash_length == -1 ||
-        ( size_t )hash_length > sizeof( session->resumption_key ) )
-    {
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    psa_hash_alg = mbedtls_psa_translate_md(ciphersuite_info->mac);
+    hash_length = PSA_HASH_LENGTH(psa_hash_alg);
+    if (hash_length == -1 ||
+        (size_t) hash_length > sizeof(session->resumption_key)) {
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "resumption_master_secret",
-                           session->app_secrets.resumption_master_secret,
-                           hash_length );
+    MBEDTLS_SSL_DEBUG_BUF(3, "resumption_master_secret",
+                          session->app_secrets.resumption_master_secret,
+                          hash_length);
 
     /* Compute resumption key
      *
@@ -2753,37 +2679,36 @@
      *                    "resumption", ticket_nonce, Hash.length )
      */
     ret = mbedtls_ssl_tls13_hkdf_expand_label(
-                    psa_hash_alg,
-                    session->app_secrets.resumption_master_secret,
-                    hash_length,
-                    MBEDTLS_SSL_TLS1_3_LBL_WITH_LEN( resumption ),
-                    ticket_nonce,
-                    ticket_nonce_len,
-                    session->resumption_key,
-                    hash_length );
+        psa_hash_alg,
+        session->app_secrets.resumption_master_secret,
+        hash_length,
+        MBEDTLS_SSL_TLS1_3_LBL_WITH_LEN(resumption),
+        ticket_nonce,
+        ticket_nonce_len,
+        session->resumption_key,
+        hash_length);
 
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 2,
-                               "Creating the ticket-resumed PSK failed",
-                               ret );
-        return( ret );
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(2,
+                              "Creating the ticket-resumed PSK failed",
+                              ret);
+        return ret;
     }
 
     session->resumption_key_len = hash_length;
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "Ticket-resumed PSK",
-                           session->resumption_key,
-                           session->resumption_key_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "Ticket-resumed PSK",
+                          session->resumption_key,
+                          session->resumption_key_len);
 
-    return( 0 );
+    return 0;
 }
 
 /*
  * Handler for MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_new_session_ticket( mbedtls_ssl_context *ssl )
+static int ssl_tls13_process_new_session_ticket(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *buf;
@@ -2791,124 +2716,124 @@
     unsigned char *ticket_nonce;
     size_t ticket_nonce_len;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse new session ticket" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse new session ticket"));
 
-    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_fetch_handshake_msg(
-                              ssl, MBEDTLS_SSL_HS_NEW_SESSION_TICKET,
-                              &buf, &buf_len ) );
+    MBEDTLS_SSL_PROC_CHK(mbedtls_ssl_tls13_fetch_handshake_msg(
+                             ssl, MBEDTLS_SSL_HS_NEW_SESSION_TICKET,
+                             &buf, &buf_len));
 
-    MBEDTLS_SSL_PROC_CHK( ssl_tls13_parse_new_session_ticket(
-                              ssl, buf, buf + buf_len,
-                              &ticket_nonce, &ticket_nonce_len ) );
+    MBEDTLS_SSL_PROC_CHK(ssl_tls13_parse_new_session_ticket(
+                             ssl, buf, buf + buf_len,
+                             &ticket_nonce, &ticket_nonce_len));
 
-    MBEDTLS_SSL_PROC_CHK( ssl_tls13_postprocess_new_session_ticket(
-                              ssl, ticket_nonce, ticket_nonce_len ) );
+    MBEDTLS_SSL_PROC_CHK(ssl_tls13_postprocess_new_session_ticket(
+                             ssl, ticket_nonce, ticket_nonce_len));
 
-    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_HANDSHAKE_OVER );
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_OVER);
 
 cleanup:
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse new session ticket" ) );
-    return( ret );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse new session ticket"));
+    return ret;
 }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
-int mbedtls_ssl_tls13_handshake_client_step( mbedtls_ssl_context *ssl )
+int mbedtls_ssl_tls13_handshake_client_step(mbedtls_ssl_context *ssl)
 {
     int ret = 0;
 
-    switch( ssl->state )
-    {
+    switch (ssl->state) {
         case MBEDTLS_SSL_HELLO_REQUEST:
-            mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_HELLO );
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_HELLO);
             break;
 
         case MBEDTLS_SSL_CLIENT_HELLO:
-            ret = mbedtls_ssl_write_client_hello( ssl );
+            ret = mbedtls_ssl_write_client_hello(ssl);
             break;
 
         case MBEDTLS_SSL_SERVER_HELLO:
-            ret = ssl_tls13_process_server_hello( ssl );
+            ret = ssl_tls13_process_server_hello(ssl);
             break;
 
         case MBEDTLS_SSL_ENCRYPTED_EXTENSIONS:
-            ret = ssl_tls13_process_encrypted_extensions( ssl );
+            ret = ssl_tls13_process_encrypted_extensions(ssl);
             break;
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED)
         case MBEDTLS_SSL_CERTIFICATE_REQUEST:
-            ret = ssl_tls13_process_certificate_request( ssl );
+            ret = ssl_tls13_process_certificate_request(ssl);
             break;
 
         case MBEDTLS_SSL_SERVER_CERTIFICATE:
-            ret = ssl_tls13_process_server_certificate( ssl );
+            ret = ssl_tls13_process_server_certificate(ssl);
             break;
 
         case MBEDTLS_SSL_CERTIFICATE_VERIFY:
-            ret = ssl_tls13_process_certificate_verify( ssl );
+            ret = ssl_tls13_process_certificate_verify(ssl);
             break;
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED */
 
         case MBEDTLS_SSL_SERVER_FINISHED:
-            ret = ssl_tls13_process_server_finished( ssl );
+            ret = ssl_tls13_process_server_finished(ssl);
             break;
 
         case MBEDTLS_SSL_CLIENT_CERTIFICATE:
-            ret = ssl_tls13_write_client_certificate( ssl );
+            ret = ssl_tls13_write_client_certificate(ssl);
             break;
 
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED)
         case MBEDTLS_SSL_CLIENT_CERTIFICATE_VERIFY:
-            ret = ssl_tls13_write_client_certificate_verify( ssl );
+            ret = ssl_tls13_write_client_certificate_verify(ssl);
             break;
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED */
 
         case MBEDTLS_SSL_CLIENT_FINISHED:
-            ret = ssl_tls13_write_client_finished( ssl );
+            ret = ssl_tls13_write_client_finished(ssl);
             break;
 
         case MBEDTLS_SSL_FLUSH_BUFFERS:
-            ret = ssl_tls13_flush_buffers( ssl );
+            ret = ssl_tls13_flush_buffers(ssl);
             break;
 
         case MBEDTLS_SSL_HANDSHAKE_WRAPUP:
-            ret = ssl_tls13_handshake_wrapup( ssl );
+            ret = ssl_tls13_handshake_wrapup(ssl);
             break;
 
-        /*
-         * Injection of dummy-CCS's for middlebox compatibility
-         */
+            /*
+             * Injection of dummy-CCS's for middlebox compatibility
+             */
 #if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
         case MBEDTLS_SSL_CLIENT_CCS_BEFORE_2ND_CLIENT_HELLO:
-            ret = mbedtls_ssl_tls13_write_change_cipher_spec( ssl );
-            if( ret == 0 )
-                mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_HELLO );
+            ret = mbedtls_ssl_tls13_write_change_cipher_spec(ssl);
+            if (ret == 0) {
+                mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_HELLO);
+            }
             break;
 
         case MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED:
-            ret = mbedtls_ssl_tls13_write_change_cipher_spec( ssl );
-            if( ret == 0 )
-                mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_CERTIFICATE );
+            ret = mbedtls_ssl_tls13_write_change_cipher_spec(ssl);
+            if (ret == 0) {
+                mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_CERTIFICATE);
+            }
             break;
 #endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
         case MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET:
-            ret = ssl_tls13_process_new_session_ticket( ssl );
-            if( ret != 0 )
+            ret = ssl_tls13_process_new_session_ticket(ssl);
+            if (ret != 0) {
                 break;
+            }
             ret = MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET;
             break;
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
         default:
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
-            return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+            MBEDTLS_SSL_DEBUG_MSG(1, ("invalid state %d", ssl->state));
+            return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }
 
-    return( ret );
+    return ret;
 }
 
 #endif /* MBEDTLS_SSL_CLI_C && MBEDTLS_SSL_PROTO_TLS1_3 */
-
-