diff --git a/library/rsa.c b/library/rsa.c
index 50d15a1..c81aa71 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -77,19 +77,12 @@
 
 #if !defined(MBEDTLS_RSA_ALT)
 
-/* Parameter validation macros */
-#define RSA_VALIDATE_RET( cond )                                       \
-    MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_RSA_BAD_INPUT_DATA )
-#define RSA_VALIDATE( cond )                                           \
-    MBEDTLS_INTERNAL_VALIDATE( cond )
-
 int mbedtls_rsa_import( mbedtls_rsa_context *ctx,
                         const mbedtls_mpi *N,
                         const mbedtls_mpi *P, const mbedtls_mpi *Q,
                         const mbedtls_mpi *D, const mbedtls_mpi *E )
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    RSA_VALIDATE_RET( ctx != NULL );
 
     if( ( N != NULL && ( ret = mbedtls_mpi_copy( &ctx->N, N ) ) != 0 ) ||
         ( P != NULL && ( ret = mbedtls_mpi_copy( &ctx->P, P ) ) != 0 ) ||
@@ -114,7 +107,6 @@
                             unsigned char const *E, size_t E_len )
 {
     int ret = 0;
-    RSA_VALIDATE_RET( ctx != NULL );
 
     if( N != NULL )
     {
@@ -244,8 +236,6 @@
 #endif
     int n_missing, pq_missing, d_missing, is_pub, is_priv;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-
     have_N = ( mbedtls_mpi_cmp_int( &ctx->N, 0 ) != 0 );
     have_P = ( mbedtls_mpi_cmp_int( &ctx->P, 0 ) != 0 );
     have_Q = ( mbedtls_mpi_cmp_int( &ctx->Q, 0 ) != 0 );
@@ -348,7 +338,6 @@
 {
     int ret = 0;
     int is_priv;
-    RSA_VALIDATE_RET( ctx != NULL );
 
     /* Check if key is private or public */
     is_priv =
@@ -393,7 +382,6 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int is_priv;
-    RSA_VALIDATE_RET( ctx != NULL );
 
     /* Check if key is private or public */
     is_priv =
@@ -437,7 +425,6 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int is_priv;
-    RSA_VALIDATE_RET( ctx != NULL );
 
     /* Check if key is private or public */
     is_priv =
@@ -474,8 +461,6 @@
  */
 void mbedtls_rsa_init( mbedtls_rsa_context *ctx )
 {
-    RSA_VALIDATE( ctx != NULL );
-
     memset( ctx, 0, sizeof( mbedtls_rsa_context ) );
 
     ctx->padding = MBEDTLS_RSA_PKCS_V15;
@@ -552,8 +537,6 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_mpi H, G, L;
     int prime_quality = 0;
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( f_rng != NULL );
 
     /*
      * If the modulus is 1024 bit long or shorter, then the security strength of
@@ -666,8 +649,6 @@
  */
 int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx )
 {
-    RSA_VALIDATE_RET( ctx != NULL );
-
     if( rsa_check_context( ctx, 0 /* public */, 0 /* no blinding */ ) != 0 )
         return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
 
@@ -691,8 +672,6 @@
  */
 int mbedtls_rsa_check_privkey( const mbedtls_rsa_context *ctx )
 {
-    RSA_VALIDATE_RET( ctx != NULL );
-
     if( mbedtls_rsa_check_pubkey( ctx ) != 0 ||
         rsa_check_context( ctx, 1 /* private */, 1 /* blinding */ ) != 0 )
     {
@@ -722,9 +701,6 @@
 int mbedtls_rsa_check_pub_priv( const mbedtls_rsa_context *pub,
                                 const mbedtls_rsa_context *prv )
 {
-    RSA_VALIDATE_RET( pub != NULL );
-    RSA_VALIDATE_RET( prv != NULL );
-
     if( mbedtls_rsa_check_pubkey( pub )  != 0 ||
         mbedtls_rsa_check_privkey( prv ) != 0 )
     {
@@ -750,9 +726,6 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t olen;
     mbedtls_mpi T;
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( input != NULL );
-    RSA_VALIDATE_RET( output != NULL );
 
     if( rsa_check_context( ctx, 0 /* public */, 0 /* no blinding */ ) )
         return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
@@ -920,10 +893,6 @@
      * checked result; should be the same in the end. */
     mbedtls_mpi I, C;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( input  != NULL );
-    RSA_VALIDATE_RET( output != NULL );
-
     if( f_rng == NULL )
         return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
 
@@ -1311,11 +1280,6 @@
     unsigned char *p = output;
     unsigned int hlen;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( output != NULL );
-    RSA_VALIDATE_RET( ilen == 0 || input != NULL );
-    RSA_VALIDATE_RET( label_len == 0 || label != NULL );
-
     if( f_rng == NULL )
         return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
 
@@ -1377,10 +1341,6 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *p = output;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( output != NULL );
-    RSA_VALIDATE_RET( ilen == 0 || input != NULL );
-
     olen = ctx->len;
 
     /* first comparison checks for overflow */
@@ -1429,10 +1389,6 @@
                        const unsigned char *input,
                        unsigned char *output )
 {
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( output != NULL );
-    RSA_VALIDATE_RET( ilen == 0 || input != NULL );
-
     switch( ctx->padding )
     {
 #if defined(MBEDTLS_PKCS1_V15)
@@ -1472,12 +1428,6 @@
     unsigned char lhash[HASH_MAX_SIZE];
     unsigned int hlen;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( output_max_len == 0 || output != NULL );
-    RSA_VALIDATE_RET( label_len == 0 || label != NULL );
-    RSA_VALIDATE_RET( input != NULL );
-    RSA_VALIDATE_RET( olen != NULL );
-
     /*
      * Parameters sanity checks
      */
@@ -1598,11 +1548,6 @@
     size_t ilen;
     unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( output_max_len == 0 || output != NULL );
-    RSA_VALIDATE_RET( input != NULL );
-    RSA_VALIDATE_RET( olen != NULL );
-
     ilen = ctx->len;
 
     if( ctx->padding != MBEDTLS_RSA_PKCS_V15 )
@@ -1637,11 +1582,6 @@
                        unsigned char *output,
                        size_t output_max_len)
 {
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( output_max_len == 0 || output != NULL );
-    RSA_VALIDATE_RET( input != NULL );
-    RSA_VALIDATE_RET( olen != NULL );
-
     switch( ctx->padding )
     {
 #if defined(MBEDTLS_PKCS1_V15)
@@ -1679,11 +1619,8 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t msb;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( ( md_alg  == MBEDTLS_MD_NONE &&
-                        hashlen == 0 ) ||
-                      hash != NULL );
-    RSA_VALIDATE_RET( sig != NULL );
+    if( ( md_alg != MBEDTLS_MD_NONE || hashlen != 0 ) && hash == NULL )
+        return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
 
     if( ctx->padding != MBEDTLS_RSA_PKCS_V21 )
         return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
@@ -1955,11 +1892,8 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *sig_try = NULL, *verif = NULL;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( ( md_alg  == MBEDTLS_MD_NONE &&
-                        hashlen == 0 ) ||
-                      hash != NULL );
-    RSA_VALIDATE_RET( sig != NULL );
+    if( ( md_alg != MBEDTLS_MD_NONE || hashlen != 0 ) && hash == NULL )
+        return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
 
     if( ctx->padding != MBEDTLS_RSA_PKCS_V15 )
         return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
@@ -2023,11 +1957,8 @@
                     const unsigned char *hash,
                     unsigned char *sig )
 {
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( ( md_alg  == MBEDTLS_MD_NONE &&
-                        hashlen == 0 ) ||
-                      hash != NULL );
-    RSA_VALIDATE_RET( sig != NULL );
+    if( ( md_alg != MBEDTLS_MD_NONE || hashlen != 0 ) && hash == NULL )
+        return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
 
     switch( ctx->padding )
     {
@@ -2069,11 +2000,8 @@
     size_t observed_salt_len, msb;
     unsigned char buf[MBEDTLS_MPI_MAX_SIZE] = {0};
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( sig != NULL );
-    RSA_VALIDATE_RET( ( md_alg  == MBEDTLS_MD_NONE &&
-                        hashlen == 0 ) ||
-                      hash != NULL );
+    if( ( md_alg != MBEDTLS_MD_NONE || hashlen != 0 ) && hash == NULL )
+        return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
 
     siglen = ctx->len;
 
@@ -2168,11 +2096,8 @@
                            const unsigned char *sig )
 {
     mbedtls_md_type_t mgf1_hash_id;
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( sig != NULL );
-    RSA_VALIDATE_RET( ( md_alg  == MBEDTLS_MD_NONE &&
-                        hashlen == 0 ) ||
-                      hash != NULL );
+    if( ( md_alg != MBEDTLS_MD_NONE || hashlen != 0 ) && hash == NULL )
+        return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
 
     mgf1_hash_id = ( ctx->hash_id != MBEDTLS_MD_NONE )
                              ? (mbedtls_md_type_t) ctx->hash_id
@@ -2201,11 +2126,8 @@
     size_t sig_len;
     unsigned char *encoded = NULL, *encoded_expected = NULL;
 
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( sig != NULL );
-    RSA_VALIDATE_RET( ( md_alg  == MBEDTLS_MD_NONE &&
-                        hashlen == 0 ) ||
-                      hash != NULL );
+    if( ( md_alg != MBEDTLS_MD_NONE || hashlen != 0 ) && hash == NULL )
+        return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
 
     sig_len = ctx->len;
 
@@ -2270,11 +2192,8 @@
                       const unsigned char *hash,
                       const unsigned char *sig )
 {
-    RSA_VALIDATE_RET( ctx != NULL );
-    RSA_VALIDATE_RET( sig != NULL );
-    RSA_VALIDATE_RET( ( md_alg  == MBEDTLS_MD_NONE &&
-                        hashlen == 0 ) ||
-                      hash != NULL );
+    if( ( md_alg != MBEDTLS_MD_NONE || hashlen != 0 ) && hash == NULL )
+        return MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
 
     switch( ctx->padding )
     {
@@ -2301,8 +2220,6 @@
 int mbedtls_rsa_copy( mbedtls_rsa_context *dst, const mbedtls_rsa_context *src )
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    RSA_VALIDATE_RET( dst != NULL );
-    RSA_VALIDATE_RET( src != NULL );
 
     dst->len = src->len;