diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 88a599c..e6a3ff5 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -21,6 +21,7 @@
  */
 #ifndef MBEDTLS_SSL_H
 #define MBEDTLS_SSL_H
+#include "mbedtls/private_access.h"
 
 #if !defined(MBEDTLS_CONFIG_FILE)
 #include "mbedtls/config.h"
@@ -912,11 +913,11 @@
 typedef struct mbedtls_dtls_srtp_info_t
 {
     /*! The SRTP profile that was negotiated. */
-    mbedtls_ssl_srtp_profile chosen_dtls_srtp_profile;
+    mbedtls_ssl_srtp_profile MBEDTLS_PRIVATE(chosen_dtls_srtp_profile);
     /*! The length of mki_value. */
-    uint16_t mki_len;
+    uint16_t MBEDTLS_PRIVATE(mki_len);
     /*! The mki_value used, with max size of 256 bytes. */
-    unsigned char mki_value[MBEDTLS_TLS_SRTP_MAX_MKI_LENGTH];
+    unsigned char MBEDTLS_PRIVATE(mki_value)[MBEDTLS_TLS_SRTP_MAX_MKI_LENGTH];
 }
 mbedtls_dtls_srtp_info;
 
@@ -936,17 +937,17 @@
 struct mbedtls_ssl_session
 {
 #if defined(MBEDTLS_HAVE_TIME)
-    mbedtls_time_t start;       /*!< starting time      */
+    mbedtls_time_t MBEDTLS_PRIVATE(start);       /*!< starting time      */
 #endif
-    int ciphersuite;            /*!< chosen ciphersuite */
-    int compression;            /*!< chosen compression */
-    size_t id_len;              /*!< session id length  */
-    unsigned char id[32];       /*!< session identifier */
-    unsigned char master[48];   /*!< the master secret  */
+    int MBEDTLS_PRIVATE(ciphersuite);            /*!< chosen ciphersuite */
+    int MBEDTLS_PRIVATE(compression);            /*!< chosen compression */
+    size_t MBEDTLS_PRIVATE(id_len);              /*!< session id length  */
+    unsigned char MBEDTLS_PRIVATE(id)[32];       /*!< session identifier */
+    unsigned char MBEDTLS_PRIVATE(master)[48];   /*!< the master secret  */
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
 #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
-    mbedtls_x509_crt *peer_cert;       /*!< peer X.509 cert chain */
+    mbedtls_x509_crt *MBEDTLS_PRIVATE(peer_cert);       /*!< peer X.509 cert chain */
 #else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
     /*! The digest of the peer's end-CRT. This must be kept to detect CRT
      *  changes during renegotiation, mitigating the triple handshake attack. */
@@ -955,24 +956,24 @@
     mbedtls_md_type_t peer_cert_digest_type;
 #endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
-    uint32_t verify_result;          /*!<  verification result     */
+    uint32_t MBEDTLS_PRIVATE(verify_result);          /*!<  verification result     */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
-    unsigned char *ticket;      /*!< RFC 5077 session ticket */
-    size_t ticket_len;          /*!< session ticket length   */
-    uint32_t ticket_lifetime;   /*!< ticket lifetime hint    */
+    unsigned char *MBEDTLS_PRIVATE(ticket);      /*!< RFC 5077 session ticket */
+    size_t MBEDTLS_PRIVATE(ticket_len);          /*!< session ticket length   */
+    uint32_t MBEDTLS_PRIVATE(ticket_lifetime);   /*!< ticket lifetime hint    */
 #endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    unsigned char mfl_code;     /*!< MaxFragmentLength negotiated by peer */
+    unsigned char MBEDTLS_PRIVATE(mfl_code);     /*!< MaxFragmentLength negotiated by peer */
 #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-    int trunc_hmac;             /*!< flag for truncated hmac activation   */
+    int MBEDTLS_PRIVATE(trunc_hmac);             /*!< flag for truncated hmac activation   */
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    int encrypt_then_mac;       /*!< flag for EtM activation                */
+    int MBEDTLS_PRIVATE(encrypt_then_mac);       /*!< flag for EtM activation                */
 #endif
 };
 
@@ -990,114 +991,114 @@
     /** Allowed ciphersuites per version. To access list's elements, please use
      *  \c mbedtls_ssl_get_protocol_version_ciphersuites
      */
-    const int *ciphersuite_list[3];
+    const int *MBEDTLS_PRIVATE(ciphersuite_list)[3];
 
     /** Callback for printing debug output                                  */
-    void (*f_dbg)(void *, int, const char *, int, const char *);
-    void *p_dbg;                    /*!< context for the debug function     */
+    void (*MBEDTLS_PRIVATE(f_dbg))(void *, int, const char *, int, const char *);
+    void *MBEDTLS_PRIVATE(p_dbg);                    /*!< context for the debug function     */
 
     /** Callback for getting (pseudo-)random numbers                        */
-    int  (*f_rng)(void *, unsigned char *, size_t);
-    void *p_rng;                    /*!< context for the RNG function       */
+    int  (*MBEDTLS_PRIVATE(f_rng))(void *, unsigned char *, size_t);
+    void *MBEDTLS_PRIVATE(p_rng);                    /*!< context for the RNG function       */
 
     /** Callback to retrieve a session from the cache                       */
-    mbedtls_ssl_cache_get_t *f_get_cache;
+    mbedtls_ssl_cache_get_t *MBEDTLS_PRIVATE(f_get_cache);
     /** Callback to store a session into the cache                          */
-    mbedtls_ssl_cache_set_t *f_set_cache;
-    void *p_cache;                  /*!< context for cache callbacks        */
+    mbedtls_ssl_cache_set_t *MBEDTLS_PRIVATE(f_set_cache);
+    void *MBEDTLS_PRIVATE(p_cache);                  /*!< context for cache callbacks        */
 
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
     /** Callback for setting cert according to SNI extension                */
-    int (*f_sni)(void *, mbedtls_ssl_context *, const unsigned char *, size_t);
-    void *p_sni;                    /*!< context for SNI callback           */
+    int (*MBEDTLS_PRIVATE(f_sni))(void *, mbedtls_ssl_context *, const unsigned char *, size_t);
+    void *MBEDTLS_PRIVATE(p_sni);                    /*!< context for SNI callback           */
 #endif
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
     /** Callback to customize X.509 certificate chain verification          */
-    int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *);
-    void *p_vrfy;                   /*!< context for X.509 verify calllback */
+    int (*MBEDTLS_PRIVATE(f_vrfy))(void *, mbedtls_x509_crt *, int, uint32_t *);
+    void *MBEDTLS_PRIVATE(p_vrfy);                   /*!< context for X.509 verify calllback */
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
     /** Callback to retrieve PSK key from identity                          */
-    int (*f_psk)(void *, mbedtls_ssl_context *, const unsigned char *, size_t);
-    void *p_psk;                    /*!< context for PSK callback           */
+    int (*MBEDTLS_PRIVATE(f_psk))(void *, mbedtls_ssl_context *, const unsigned char *, size_t);
+    void *MBEDTLS_PRIVATE(p_psk);                    /*!< context for PSK callback           */
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C)
     /** Callback to create & write a cookie for ClientHello veirifcation    */
-    int (*f_cookie_write)( void *, unsigned char **, unsigned char *,
+    int (*MBEDTLS_PRIVATE(f_cookie_write))( void *, unsigned char **, unsigned char *,
                            const unsigned char *, size_t );
     /** Callback to verify validity of a ClientHello cookie                 */
-    int (*f_cookie_check)( void *, const unsigned char *, size_t,
+    int (*MBEDTLS_PRIVATE(f_cookie_check))( void *, const unsigned char *, size_t,
                            const unsigned char *, size_t );
-    void *p_cookie;                 /*!< context for the cookie callbacks   */
+    void *MBEDTLS_PRIVATE(p_cookie);                 /*!< context for the cookie callbacks   */
 #endif
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_SRV_C)
     /** Callback to create & write a session ticket                         */
-    int (*f_ticket_write)( void *, const mbedtls_ssl_session *,
+    int (*MBEDTLS_PRIVATE(f_ticket_write))( void *, const mbedtls_ssl_session *,
             unsigned char *, const unsigned char *, size_t *, uint32_t * );
     /** Callback to parse a session ticket into a session structure         */
-    int (*f_ticket_parse)( void *, mbedtls_ssl_session *, unsigned char *, size_t);
-    void *p_ticket;                 /*!< context for the ticket callbacks   */
+    int (*MBEDTLS_PRIVATE(f_ticket_parse))( void *, mbedtls_ssl_session *, unsigned char *, size_t);
+    void *MBEDTLS_PRIVATE(p_ticket);                 /*!< context for the ticket callbacks   */
 #endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_SRV_C */
 
 #if defined(MBEDTLS_SSL_EXPORT_KEYS)
     /** Callback to export key block and master secret                      */
-    int (*f_export_keys)( void *, const unsigned char *,
+    int (*MBEDTLS_PRIVATE(f_export_keys))( void *, const unsigned char *,
             const unsigned char *, size_t, size_t, size_t );
     /** Callback to export key block, master secret,
      *  tls_prf and random bytes. Should replace f_export_keys    */
-    int (*f_export_keys_ext)( void *, const unsigned char *,
+    int (*MBEDTLS_PRIVATE(f_export_keys_ext))( void *, const unsigned char *,
                 const unsigned char *, size_t, size_t, size_t,
                 const unsigned char[32], const unsigned char[32],
                 mbedtls_tls_prf_types );
-    void *p_export_keys;            /*!< context for key export callback    */
+    void *MBEDTLS_PRIVATE(p_export_keys);            /*!< context for key export callback    */
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    size_t cid_len; /*!< The length of CIDs for incoming DTLS records.      */
+    size_t MBEDTLS_PRIVATE(cid_len); /*!< The length of CIDs for incoming DTLS records.      */
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
-    const mbedtls_x509_crt_profile *cert_profile; /*!< verification profile */
-    mbedtls_ssl_key_cert *key_cert; /*!< own certificate/key pair(s)        */
-    mbedtls_x509_crt *ca_chain;     /*!< trusted CAs                        */
-    mbedtls_x509_crl *ca_crl;       /*!< trusted CAs CRLs                   */
+    const mbedtls_x509_crt_profile *MBEDTLS_PRIVATE(cert_profile); /*!< verification profile */
+    mbedtls_ssl_key_cert *MBEDTLS_PRIVATE(key_cert); /*!< own certificate/key pair(s)        */
+    mbedtls_x509_crt *MBEDTLS_PRIVATE(ca_chain);     /*!< trusted CAs                        */
+    mbedtls_x509_crl *MBEDTLS_PRIVATE(ca_crl);       /*!< trusted CAs CRLs                   */
 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    mbedtls_x509_crt_ca_cb_t f_ca_cb;
-    void *p_ca_cb;
+    mbedtls_x509_crt_ca_cb_t MBEDTLS_PRIVATE(f_ca_cb);
+    void *MBEDTLS_PRIVATE(p_ca_cb);
 #endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_ssl_async_sign_t *f_async_sign_start; /*!< start asynchronous signature operation */
-    mbedtls_ssl_async_decrypt_t *f_async_decrypt_start; /*!< start asynchronous decryption operation */
+    mbedtls_ssl_async_sign_t *MBEDTLS_PRIVATE(f_async_sign_start); /*!< start asynchronous signature operation */
+    mbedtls_ssl_async_decrypt_t *MBEDTLS_PRIVATE(f_async_decrypt_start); /*!< start asynchronous decryption operation */
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
-    mbedtls_ssl_async_resume_t *f_async_resume; /*!< resume asynchronous operation */
-    mbedtls_ssl_async_cancel_t *f_async_cancel; /*!< cancel asynchronous operation */
-    void *p_async_config_data; /*!< Configuration data set by mbedtls_ssl_conf_async_private_cb(). */
+    mbedtls_ssl_async_resume_t *MBEDTLS_PRIVATE(f_async_resume); /*!< resume asynchronous operation */
+    mbedtls_ssl_async_cancel_t *MBEDTLS_PRIVATE(f_async_cancel); /*!< cancel asynchronous operation */
+    void *MBEDTLS_PRIVATE(p_async_config_data); /*!< Configuration data set by mbedtls_ssl_conf_async_private_cb(). */
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-    const int *sig_hashes;          /*!< allowed signature hashes           */
+    const int *MBEDTLS_PRIVATE(sig_hashes);          /*!< allowed signature hashes           */
 #endif
 
 #if defined(MBEDTLS_ECP_C)
-    const mbedtls_ecp_group_id *curve_list; /*!< allowed curves             */
+    const mbedtls_ecp_group_id *MBEDTLS_PRIVATE(curve_list); /*!< allowed curves             */
 #endif
 
 #if defined(MBEDTLS_DHM_C)
-    mbedtls_mpi dhm_P;              /*!< prime modulus for DHM              */
-    mbedtls_mpi dhm_G;              /*!< generator for DHM                  */
+    mbedtls_mpi MBEDTLS_PRIVATE(dhm_P);              /*!< prime modulus for DHM              */
+    mbedtls_mpi MBEDTLS_PRIVATE(dhm_G);              /*!< generator for DHM                  */
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t psk_opaque; /*!< PSA key slot holding opaque PSK. This field
+    psa_key_id_t MBEDTLS_PRIVATE(psk_opaque); /*!< PSA key slot holding opaque PSK. This field
                               *   should only be set via
                               *   mbedtls_ssl_conf_psk_opaque().
                               *   If either no PSK or a raw PSK have been
@@ -1105,22 +1106,22 @@
                               */
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
-    unsigned char *psk;      /*!< The raw pre-shared key. This field should
+    unsigned char *MBEDTLS_PRIVATE(psk);      /*!< The raw pre-shared key. This field should
                               *   only be set via mbedtls_ssl_conf_psk().
                               *   If either no PSK or an opaque PSK
                               *   have been configured, this has value NULL. */
-    size_t         psk_len;  /*!< The length of the raw pre-shared key.
+    size_t         MBEDTLS_PRIVATE(psk_len);  /*!< The length of the raw pre-shared key.
                               *   This field should only be set via
                               *   mbedtls_ssl_conf_psk().
                               *   Its value is non-zero if and only if
                               *   \c psk is not \c NULL. */
 
-    unsigned char *psk_identity;    /*!< The PSK identity for PSK negotiation.
+    unsigned char *MBEDTLS_PRIVATE(psk_identity);    /*!< The PSK identity for PSK negotiation.
                                      *   This field should only be set via
                                      *   mbedtls_ssl_conf_psk().
                                      *   This is set if and only if either
                                      *   \c psk or \c psk_opaque are set. */
-    size_t         psk_identity_len;/*!< The length of PSK identity.
+    size_t         MBEDTLS_PRIVATE(psk_identity_len);/*!< The length of PSK identity.
                                      *   This field should only be set via
                                      *   mbedtls_ssl_conf_psk().
                                      *   Its value is non-zero if and only if
@@ -1129,279 +1130,279 @@
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
 
 #if defined(MBEDTLS_SSL_ALPN)
-    const char **alpn_list;         /*!< ordered list of protocols          */
+    const char **MBEDTLS_PRIVATE(alpn_list);         /*!< ordered list of protocols          */
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
     /*! ordered list of supported srtp profile */
-    const mbedtls_ssl_srtp_profile *dtls_srtp_profile_list;
+    const mbedtls_ssl_srtp_profile *MBEDTLS_PRIVATE(dtls_srtp_profile_list);
     /*! number of supported profiles */
-    size_t dtls_srtp_profile_list_len;
+    size_t MBEDTLS_PRIVATE(dtls_srtp_profile_list_len);
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 
     /*
      * Numerical settings (int then char)
      */
 
-    uint32_t read_timeout;          /*!< timeout for mbedtls_ssl_read (ms)  */
+    uint32_t MBEDTLS_PRIVATE(read_timeout);          /*!< timeout for mbedtls_ssl_read (ms)  */
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    uint32_t hs_timeout_min;        /*!< initial value of the handshake
+    uint32_t MBEDTLS_PRIVATE(hs_timeout_min);        /*!< initial value of the handshake
                                          retransmission timeout (ms)        */
-    uint32_t hs_timeout_max;        /*!< maximum value of the handshake
+    uint32_t MBEDTLS_PRIVATE(hs_timeout_max);        /*!< maximum value of the handshake
                                          retransmission timeout (ms)        */
 #endif
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    int renego_max_records;         /*!< grace period for renegotiation     */
-    unsigned char renego_period[8]; /*!< value of the record counters
+    int MBEDTLS_PRIVATE(renego_max_records);         /*!< grace period for renegotiation     */
+    unsigned char MBEDTLS_PRIVATE(renego_period)[8]; /*!< value of the record counters
                                          that triggers renegotiation        */
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
-    unsigned int badmac_limit;      /*!< limit of records with a bad MAC    */
+    unsigned int MBEDTLS_PRIVATE(badmac_limit);      /*!< limit of records with a bad MAC    */
 #endif
 
 #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C)
-    unsigned int dhm_min_bitlen;    /*!< min. bit length of the DHM prime   */
+    unsigned int MBEDTLS_PRIVATE(dhm_min_bitlen);    /*!< min. bit length of the DHM prime   */
 #endif
 
-    unsigned char max_major_ver;    /*!< max. major version used            */
-    unsigned char max_minor_ver;    /*!< max. minor version used            */
-    unsigned char min_major_ver;    /*!< min. major version used            */
-    unsigned char min_minor_ver;    /*!< min. minor version used            */
+    unsigned char MBEDTLS_PRIVATE(max_major_ver);    /*!< max. major version used            */
+    unsigned char MBEDTLS_PRIVATE(max_minor_ver);    /*!< max. minor version used            */
+    unsigned char MBEDTLS_PRIVATE(min_major_ver);    /*!< min. major version used            */
+    unsigned char MBEDTLS_PRIVATE(min_minor_ver);    /*!< min. minor version used            */
 
     /*
      * Flags (bitfields)
      */
 
-    unsigned int endpoint : 1;      /*!< 0: client, 1: server               */
-    unsigned int transport : 1;     /*!< stream (TLS) or datagram (DTLS)    */
-    unsigned int authmode : 2;      /*!< MBEDTLS_SSL_VERIFY_XXX             */
+    unsigned int MBEDTLS_PRIVATE(endpoint) : 1;      /*!< 0: client, 1: server               */
+    unsigned int MBEDTLS_PRIVATE(transport) : 1;     /*!< stream (TLS) or datagram (DTLS)    */
+    unsigned int MBEDTLS_PRIVATE(authmode) : 2;      /*!< MBEDTLS_SSL_VERIFY_XXX             */
     /* needed even with renego disabled for LEGACY_BREAK_HANDSHAKE          */
-    unsigned int allow_legacy_renegotiation : 2 ; /*!< MBEDTLS_LEGACY_XXX   */
+    unsigned int MBEDTLS_PRIVATE(allow_legacy_renegotiation) : 2 ; /*!< MBEDTLS_LEGACY_XXX   */
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    unsigned int mfl_code : 3;      /*!< desired fragment length            */
+    unsigned int MBEDTLS_PRIVATE(mfl_code) : 3;      /*!< desired fragment length            */
 #endif
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    unsigned int encrypt_then_mac : 1 ; /*!< negotiate encrypt-then-mac?    */
+    unsigned int MBEDTLS_PRIVATE(encrypt_then_mac) : 1 ; /*!< negotiate encrypt-then-mac?    */
 #endif
 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-    unsigned int extended_ms : 1;   /*!< negotiate extended master secret?  */
+    unsigned int MBEDTLS_PRIVATE(extended_ms) : 1;   /*!< negotiate extended master secret?  */
 #endif
 #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
-    unsigned int anti_replay : 1;   /*!< detect and prevent replay?         */
+    unsigned int MBEDTLS_PRIVATE(anti_replay) : 1;   /*!< detect and prevent replay?         */
 #endif
 #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
-    unsigned int cbc_record_splitting : 1;  /*!< do cbc record splitting    */
+    unsigned int MBEDTLS_PRIVATE(cbc_record_splitting) : 1;  /*!< do cbc record splitting    */
 #endif
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    unsigned int disable_renegotiation : 1; /*!< disable renegotiation?     */
+    unsigned int MBEDTLS_PRIVATE(disable_renegotiation) : 1; /*!< disable renegotiation?     */
 #endif
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-    unsigned int trunc_hmac : 1;    /*!< negotiate truncated hmac?          */
+    unsigned int MBEDTLS_PRIVATE(trunc_hmac) : 1;    /*!< negotiate truncated hmac?          */
 #endif
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    unsigned int session_tickets : 1;   /*!< use session tickets?           */
+    unsigned int MBEDTLS_PRIVATE(session_tickets) : 1;   /*!< use session tickets?           */
 #endif
 #if defined(MBEDTLS_SSL_FALLBACK_SCSV) && defined(MBEDTLS_SSL_CLI_C)
-    unsigned int fallback : 1;      /*!< is this a fallback?                */
+    unsigned int MBEDTLS_PRIVATE(fallback) : 1;      /*!< is this a fallback?                */
 #endif
 #if defined(MBEDTLS_SSL_SRV_C)
-    unsigned int cert_req_ca_list : 1;  /*!< enable sending CA list in
+    unsigned int MBEDTLS_PRIVATE(cert_req_ca_list) : 1;  /*!< enable sending CA list in
                                           Certificate Request messages?     */
 #endif
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    unsigned int ignore_unexpected_cid : 1; /*!< Determines whether DTLS
+    unsigned int MBEDTLS_PRIVATE(ignore_unexpected_cid) : 1; /*!< Determines whether DTLS
                                              *   record with unexpected CID
                                              *   should lead to failure.    */
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
-    unsigned int dtls_srtp_mki_support : 1; /* support having mki_value
+    unsigned int MBEDTLS_PRIVATE(dtls_srtp_mki_support) : 1; /* support having mki_value
                                                in the use_srtp extension     */
 #endif
 };
 
 struct mbedtls_ssl_context
 {
-    const mbedtls_ssl_config *conf; /*!< configuration information          */
+    const mbedtls_ssl_config *MBEDTLS_PRIVATE(conf); /*!< configuration information          */
 
     /*
      * Miscellaneous
      */
-    int state;                  /*!< SSL handshake: current state     */
+    int MBEDTLS_PRIVATE(state);                  /*!< SSL handshake: current state     */
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    int renego_status;          /*!< Initial, in progress, pending?   */
-    int renego_records_seen;    /*!< Records since renego request, or with DTLS,
+    int MBEDTLS_PRIVATE(renego_status);          /*!< Initial, in progress, pending?   */
+    int MBEDTLS_PRIVATE(renego_records_seen);    /*!< Records since renego request, or with DTLS,
                                   number of retransmissions of request if
                                   renego_max_records is < 0           */
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
 
-    int major_ver;              /*!< equal to  MBEDTLS_SSL_MAJOR_VERSION_3    */
-    int minor_ver;              /*!< one of MBEDTLS_SSL_MINOR_VERSION_x macros */
+    int MBEDTLS_PRIVATE(major_ver);              /*!< equal to  MBEDTLS_SSL_MAJOR_VERSION_3    */
+    int MBEDTLS_PRIVATE(minor_ver);              /*!< one of MBEDTLS_SSL_MINOR_VERSION_x macros */
 
 #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
-    unsigned badmac_seen;       /*!< records with a bad MAC received    */
+    unsigned MBEDTLS_PRIVATE(badmac_seen);       /*!< records with a bad MAC received    */
 #endif /* MBEDTLS_SSL_DTLS_BADMAC_LIMIT */
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
     /** Callback to customize X.509 certificate chain verification          */
-    int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *);
-    void *p_vrfy;                   /*!< context for X.509 verify callback */
+    int (*MBEDTLS_PRIVATE(f_vrfy))(void *, mbedtls_x509_crt *, int, uint32_t *);
+    void *MBEDTLS_PRIVATE(p_vrfy);                   /*!< context for X.509 verify callback */
 #endif
 
-    mbedtls_ssl_send_t *f_send; /*!< Callback for network send */
-    mbedtls_ssl_recv_t *f_recv; /*!< Callback for network receive */
-    mbedtls_ssl_recv_timeout_t *f_recv_timeout;
+    mbedtls_ssl_send_t *MBEDTLS_PRIVATE(f_send); /*!< Callback for network send */
+    mbedtls_ssl_recv_t *MBEDTLS_PRIVATE(f_recv); /*!< Callback for network receive */
+    mbedtls_ssl_recv_timeout_t *MBEDTLS_PRIVATE(f_recv_timeout);
                                 /*!< Callback for network receive with timeout */
 
-    void *p_bio;                /*!< context for I/O operations   */
+    void *MBEDTLS_PRIVATE(p_bio);                /*!< context for I/O operations   */
 
     /*
      * Session layer
      */
-    mbedtls_ssl_session *session_in;            /*!<  current session data (in)   */
-    mbedtls_ssl_session *session_out;           /*!<  current session data (out)  */
-    mbedtls_ssl_session *session;               /*!<  negotiated session data     */
-    mbedtls_ssl_session *session_negotiate;     /*!<  session data in negotiation */
+    mbedtls_ssl_session *MBEDTLS_PRIVATE(session_in);            /*!<  current session data (in)   */
+    mbedtls_ssl_session *MBEDTLS_PRIVATE(session_out);           /*!<  current session data (out)  */
+    mbedtls_ssl_session *MBEDTLS_PRIVATE(session);               /*!<  negotiated session data     */
+    mbedtls_ssl_session *MBEDTLS_PRIVATE(session_negotiate);     /*!<  session data in negotiation */
 
-    mbedtls_ssl_handshake_params *handshake;    /*!<  params required only during
+    mbedtls_ssl_handshake_params *MBEDTLS_PRIVATE(handshake);    /*!<  params required only during
                                               the handshake process        */
 
     /*
      * Record layer transformations
      */
-    mbedtls_ssl_transform *transform_in;        /*!<  current transform params (in)   */
-    mbedtls_ssl_transform *transform_out;       /*!<  current transform params (in)   */
-    mbedtls_ssl_transform *transform;           /*!<  negotiated transform params     */
-    mbedtls_ssl_transform *transform_negotiate; /*!<  transform params in negotiation */
+    mbedtls_ssl_transform *MBEDTLS_PRIVATE(transform_in);        /*!<  current transform params (in)   */
+    mbedtls_ssl_transform *MBEDTLS_PRIVATE(transform_out);       /*!<  current transform params (in)   */
+    mbedtls_ssl_transform *MBEDTLS_PRIVATE(transform);           /*!<  negotiated transform params     */
+    mbedtls_ssl_transform *MBEDTLS_PRIVATE(transform_negotiate); /*!<  transform params in negotiation */
 
     /*
      * Timers
      */
-    void *p_timer;              /*!< context for the timer callbacks */
+    void *MBEDTLS_PRIVATE(p_timer);              /*!< context for the timer callbacks */
 
-    mbedtls_ssl_set_timer_t *f_set_timer;       /*!< set timer callback */
-    mbedtls_ssl_get_timer_t *f_get_timer;       /*!< get timer callback */
+    mbedtls_ssl_set_timer_t *MBEDTLS_PRIVATE(f_set_timer);       /*!< set timer callback */
+    mbedtls_ssl_get_timer_t *MBEDTLS_PRIVATE(f_get_timer);       /*!< get timer callback */
 
     /*
      * Record layer (incoming data)
      */
-    unsigned char *in_buf;      /*!< input buffer                     */
-    unsigned char *in_ctr;      /*!< 64-bit incoming message counter
+    unsigned char *MBEDTLS_PRIVATE(in_buf);      /*!< input buffer                     */
+    unsigned char *MBEDTLS_PRIVATE(in_ctr);      /*!< 64-bit incoming message counter
                                      TLS: maintained by us
                                      DTLS: read from peer             */
-    unsigned char *in_hdr;      /*!< start of record header           */
+    unsigned char *MBEDTLS_PRIVATE(in_hdr);      /*!< start of record header           */
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    unsigned char *in_cid;      /*!< The start of the CID;
+    unsigned char *MBEDTLS_PRIVATE(in_cid);      /*!< The start of the CID;
                                  *   (the end is marked by in_len).   */
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-    unsigned char *in_len;      /*!< two-bytes message length field   */
-    unsigned char *in_iv;       /*!< ivlen-byte IV                    */
-    unsigned char *in_msg;      /*!< message contents (in_iv+ivlen)   */
-    unsigned char *in_offt;     /*!< read offset in application data  */
+    unsigned char *MBEDTLS_PRIVATE(in_len);      /*!< two-bytes message length field   */
+    unsigned char *MBEDTLS_PRIVATE(in_iv);       /*!< ivlen-byte IV                    */
+    unsigned char *MBEDTLS_PRIVATE(in_msg);      /*!< message contents (in_iv+ivlen)   */
+    unsigned char *MBEDTLS_PRIVATE(in_offt);     /*!< read offset in application data  */
 
-    int in_msgtype;             /*!< record header: message type      */
-    size_t in_msglen;           /*!< record header: message length    */
-    size_t in_left;             /*!< amount of data read so far       */
+    int MBEDTLS_PRIVATE(in_msgtype);             /*!< record header: message type      */
+    size_t MBEDTLS_PRIVATE(in_msglen);           /*!< record header: message length    */
+    size_t MBEDTLS_PRIVATE(in_left);             /*!< amount of data read so far       */
 #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH)
-    size_t in_buf_len;          /*!< length of input buffer           */
+    size_t MBEDTLS_PRIVATE(in_buf_len);          /*!< length of input buffer           */
 #endif
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    uint16_t in_epoch;          /*!< DTLS epoch for incoming records  */
-    size_t next_record_offset;  /*!< offset of the next record in datagram
+    uint16_t MBEDTLS_PRIVATE(in_epoch);          /*!< DTLS epoch for incoming records  */
+    size_t MBEDTLS_PRIVATE(next_record_offset);  /*!< offset of the next record in datagram
                                      (equal to in_left if none)       */
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
-    uint64_t in_window_top;     /*!< last validated record seq_num    */
-    uint64_t in_window;         /*!< bitmask for replay detection     */
+    uint64_t MBEDTLS_PRIVATE(in_window_top);     /*!< last validated record seq_num    */
+    uint64_t MBEDTLS_PRIVATE(in_window);         /*!< bitmask for replay detection     */
 #endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY */
 
-    size_t in_hslen;            /*!< current handshake message length,
+    size_t MBEDTLS_PRIVATE(in_hslen);            /*!< current handshake message length,
                                      including the handshake header   */
-    int nb_zero;                /*!< # of 0-length encrypted messages */
+    int MBEDTLS_PRIVATE(nb_zero);                /*!< # of 0-length encrypted messages */
 
-    int keep_current_message;   /*!< drop or reuse current message
+    int MBEDTLS_PRIVATE(keep_current_message);   /*!< drop or reuse current message
                                      on next call to record layer? */
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    uint8_t disable_datagram_packing;  /*!< Disable packing multiple records
+    uint8_t MBEDTLS_PRIVATE(disable_datagram_packing);  /*!< Disable packing multiple records
                                         *   within a single datagram.  */
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
     /*
      * Record layer (outgoing data)
      */
-    unsigned char *out_buf;     /*!< output buffer                    */
-    unsigned char *out_ctr;     /*!< 64-bit outgoing message counter  */
-    unsigned char *out_hdr;     /*!< start of record header           */
+    unsigned char *MBEDTLS_PRIVATE(out_buf);     /*!< output buffer                    */
+    unsigned char *MBEDTLS_PRIVATE(out_ctr);     /*!< 64-bit outgoing message counter  */
+    unsigned char *MBEDTLS_PRIVATE(out_hdr);     /*!< start of record header           */
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    unsigned char *out_cid;     /*!< The start of the CID;
+    unsigned char *MBEDTLS_PRIVATE(out_cid);     /*!< The start of the CID;
                                  *   (the end is marked by in_len).   */
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-    unsigned char *out_len;     /*!< two-bytes message length field   */
-    unsigned char *out_iv;      /*!< ivlen-byte IV                    */
-    unsigned char *out_msg;     /*!< message contents (out_iv+ivlen)  */
+    unsigned char *MBEDTLS_PRIVATE(out_len);     /*!< two-bytes message length field   */
+    unsigned char *MBEDTLS_PRIVATE(out_iv);      /*!< ivlen-byte IV                    */
+    unsigned char *MBEDTLS_PRIVATE(out_msg);     /*!< message contents (out_iv+ivlen)  */
 
-    int out_msgtype;            /*!< record header: message type      */
-    size_t out_msglen;          /*!< record header: message length    */
-    size_t out_left;            /*!< amount of data not yet written   */
+    int MBEDTLS_PRIVATE(out_msgtype);            /*!< record header: message type      */
+    size_t MBEDTLS_PRIVATE(out_msglen);          /*!< record header: message length    */
+    size_t MBEDTLS_PRIVATE(out_left);            /*!< amount of data not yet written   */
 #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH)
-    size_t out_buf_len;         /*!< length of output buffer          */
+    size_t MBEDTLS_PRIVATE(out_buf_len);         /*!< length of output buffer          */
 #endif
 
-    unsigned char cur_out_ctr[8]; /*!<  Outgoing record sequence  number. */
+    unsigned char MBEDTLS_PRIVATE(cur_out_ctr)[8]; /*!<  Outgoing record sequence  number. */
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    uint16_t mtu;               /*!< path mtu, used to fragment outgoing messages */
+    uint16_t MBEDTLS_PRIVATE(mtu);               /*!< path mtu, used to fragment outgoing messages */
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
 #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
-    signed char split_done;     /*!< current record already splitted? */
+    signed char MBEDTLS_PRIVATE(split_done);     /*!< current record already splitted? */
 #endif /* MBEDTLS_SSL_CBC_RECORD_SPLITTING */
 
     /*
      * PKI layer
      */
-    int client_auth;                    /*!<  flag for client auth.   */
+    int MBEDTLS_PRIVATE(client_auth);                    /*!<  flag for client auth.   */
 
     /*
      * User settings
      */
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
-    char *hostname;             /*!< expected peer CN for verification
+    char *MBEDTLS_PRIVATE(hostname);             /*!< expected peer CN for verification
                                      (and SNI if available)                 */
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
 #if defined(MBEDTLS_SSL_ALPN)
-    const char *alpn_chosen;    /*!<  negotiated protocol                   */
+    const char *MBEDTLS_PRIVATE(alpn_chosen);    /*!<  negotiated protocol                   */
 #endif /* MBEDTLS_SSL_ALPN */
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
     /*
      * use_srtp extension
      */
-    mbedtls_dtls_srtp_info dtls_srtp_info;
+    mbedtls_dtls_srtp_info MBEDTLS_PRIVATE(dtls_srtp_info);
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 
     /*
      * Information for DTLS hello verify
      */
 #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C)
-    unsigned char  *cli_id;         /*!<  transport-level ID of the client  */
-    size_t          cli_id_len;     /*!<  length of cli_id                  */
+    unsigned char  *MBEDTLS_PRIVATE(cli_id);         /*!<  transport-level ID of the client  */
+    size_t          MBEDTLS_PRIVATE(cli_id_len);     /*!<  length of cli_id                  */
 #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY && MBEDTLS_SSL_SRV_C */
 
     /*
      * Secure renegotiation
      */
     /* needed to know when to send extension on server */
-    int secure_renegotiation;           /*!<  does peer support legacy or
+    int MBEDTLS_PRIVATE(secure_renegotiation);           /*!<  does peer support legacy or
                                               secure renegotiation           */
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    size_t verify_data_len;             /*!<  length of verify data stored   */
-    char own_verify_data[MBEDTLS_SSL_VERIFY_DATA_MAX_LEN]; /*!<  previous handshake verify data */
-    char peer_verify_data[MBEDTLS_SSL_VERIFY_DATA_MAX_LEN]; /*!<  previous handshake verify data */
+    size_t MBEDTLS_PRIVATE(verify_data_len);             /*!<  length of verify data stored   */
+    char MBEDTLS_PRIVATE(own_verify_data)[MBEDTLS_SSL_VERIFY_DATA_MAX_LEN]; /*!<  previous handshake verify data */
+    char MBEDTLS_PRIVATE(peer_verify_data)[MBEDTLS_SSL_VERIFY_DATA_MAX_LEN]; /*!<  previous handshake verify data */
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
@@ -1411,9 +1412,9 @@
      *  all subsequent handshakes. This may be different from the
      *  CID currently used in case the user has re-configured the CID
      *  after an initial handshake. */
-    unsigned char own_cid[ MBEDTLS_SSL_CID_IN_LEN_MAX ];
-    uint8_t own_cid_len;   /*!< The length of \c own_cid. */
-    uint8_t negotiate_cid; /*!< This indicates whether the CID extension should
+    unsigned char MBEDTLS_PRIVATE(own_cid)[ MBEDTLS_SSL_CID_IN_LEN_MAX ];
+    uint8_t MBEDTLS_PRIVATE(own_cid_len);   /*!< The length of \c own_cid. */
+    uint8_t MBEDTLS_PRIVATE(negotiate_cid); /*!< This indicates whether the CID extension should
                             *   be negotiated in the next handshake or not.
                             *   Possible values are #MBEDTLS_SSL_CID_ENABLED
                             *   and #MBEDTLS_SSL_CID_DISABLED. */