diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index a6e0202..0b9de03 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -534,13 +534,13 @@
 
     MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, current time: %lu", t ) );
 #else
-    if( ( ret = ssl->f_rng( ssl->p_rng, p, 4 ) ) != 0 )
+    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p, 4 ) ) != 0 )
         return( ret );
 
     p += 4;
 #endif /* MBEDTLS_HAVE_TIME */
 
-    if( ( ret = ssl->f_rng( ssl->p_rng, p, 28 ) ) != 0 )
+    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p, 28 ) ) != 0 )
         return( ret );
 
     return( 0 );
@@ -558,7 +558,7 @@
 
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write client hello" ) );
 
-    if( ssl->f_rng == NULL )
+    if( ssl->conf->f_rng == NULL )
     {
         MBEDTLS_SSL_DEBUG_MSG( 1, ( "no RNG provided") );
         return( MBEDTLS_ERR_SSL_NO_RNG );
@@ -640,7 +640,7 @@
         if( ssl->session_negotiate->ticket != NULL &&
                 ssl->session_negotiate->ticket_len != 0 )
         {
-            ret = ssl->f_rng( ssl->p_rng, ssl->session_negotiate->id, 32 );
+            ret = ssl->conf->f_rng( ssl->conf->p_rng, ssl->session_negotiate->id, 32 );
 
             if( ret != 0 )
                 return( ret );
@@ -1785,7 +1785,7 @@
     mbedtls_ssl_write_version( ssl->conf->max_major_ver, ssl->conf->max_minor_ver,
                        ssl->conf->transport, p );
 
-    if( ( ret = ssl->f_rng( ssl->p_rng, p + 2, 46 ) ) != 0 )
+    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p + 2, 46 ) ) != 0 )
     {
         MBEDTLS_SSL_DEBUG_RET( 1, "f_rng", ret );
         return( ret );
@@ -1807,7 +1807,7 @@
                             p, ssl->handshake->pmslen,
                             ssl->out_msg + offset + len_bytes, olen,
                             MBEDTLS_SSL_MAX_CONTENT_LEN - offset - len_bytes,
-                            ssl->f_rng, ssl->p_rng ) ) != 0 )
+                            ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
     {
         MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_rsa_pkcs1_encrypt", ret );
         return( ret );
@@ -2461,7 +2461,7 @@
         ret = mbedtls_dhm_make_public( &ssl->handshake->dhm_ctx,
                                 (int) mbedtls_mpi_size( &ssl->handshake->dhm_ctx.P ),
                                &ssl->out_msg[i], n,
-                                ssl->f_rng, ssl->p_rng );
+                                ssl->conf->f_rng, ssl->conf->p_rng );
         if( ret != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_make_public", ret );
@@ -2476,7 +2476,7 @@
         if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx,
                                       ssl->handshake->premaster,
                                      &ssl->handshake->pmslen,
-                                      ssl->f_rng, ssl->p_rng ) ) != 0 )
+                                      ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret );
             return( ret );
@@ -2503,7 +2503,7 @@
         ret = mbedtls_ecdh_make_public( &ssl->handshake->ecdh_ctx,
                                 &n,
                                 &ssl->out_msg[i], 1000,
-                                ssl->f_rng, ssl->p_rng );
+                                ssl->conf->f_rng, ssl->conf->p_rng );
         if( ret != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_make_public", ret );
@@ -2516,7 +2516,7 @@
                                       &ssl->handshake->pmslen,
                                        ssl->handshake->premaster,
                                        MBEDTLS_MPI_MAX_SIZE,
-                                       ssl->f_rng, ssl->p_rng ) ) != 0 )
+                                       ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret );
             return( ret );
@@ -2577,7 +2577,7 @@
             ret = mbedtls_dhm_make_public( &ssl->handshake->dhm_ctx,
                     (int) mbedtls_mpi_size( &ssl->handshake->dhm_ctx.P ),
                     &ssl->out_msg[i], n,
-                    ssl->f_rng, ssl->p_rng );
+                    ssl->conf->f_rng, ssl->conf->p_rng );
             if( ret != 0 )
             {
                 MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_make_public", ret );
@@ -2594,7 +2594,7 @@
              */
             ret = mbedtls_ecdh_make_public( &ssl->handshake->ecdh_ctx, &n,
                     &ssl->out_msg[i], MBEDTLS_SSL_MAX_CONTENT_LEN - i,
-                    ssl->f_rng, ssl->p_rng );
+                    ssl->conf->f_rng, ssl->conf->p_rng );
             if( ret != 0 )
             {
                 MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_make_public", ret );
@@ -2804,7 +2804,7 @@
 
     if( ( ret = mbedtls_pk_sign( mbedtls_ssl_own_key( ssl ), md_alg, hash_start, hashlen,
                          ssl->out_msg + 6 + offset, &n,
-                         ssl->f_rng, ssl->p_rng ) ) != 0 )
+                         ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
     {
         MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_sign", ret );
         return( ret );
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index fd2ee93..8ca3e58 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -197,7 +197,7 @@
     p += 16;
 
     /* Generate and write IV (with a copy for aes_crypt) */
-    if( ( ret = ssl->f_rng( ssl->p_rng, p, 16 ) ) != 0 )
+    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p, 16 ) ) != 0 )
         return( ret );
     memcpy( iv, p, 16 );
     p += 16;
@@ -2417,7 +2417,7 @@
     }
 #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */
 
-    if( ssl->f_rng == NULL )
+    if( ssl->conf->f_rng == NULL )
     {
         MBEDTLS_SSL_DEBUG_MSG( 1, ( "no RNG provided") );
         return( MBEDTLS_ERR_SSL_NO_RNG );
@@ -2449,13 +2449,13 @@
 
     MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, current time: %lu", t ) );
 #else
-    if( ( ret = ssl->f_rng( ssl->p_rng, p, 4 ) ) != 0 )
+    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p, 4 ) ) != 0 )
         return( ret );
 
     p += 4;
 #endif /* MBEDTLS_HAVE_TIME */
 
-    if( ( ret = ssl->f_rng( ssl->p_rng, p, 28 ) ) != 0 )
+    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p, 28 ) ) != 0 )
         return( ret );
 
     p += 28;
@@ -2503,7 +2503,7 @@
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
         {
             ssl->session_negotiate->length = n = 32;
-            if( ( ret = ssl->f_rng( ssl->p_rng, ssl->session_negotiate->id,
+            if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, ssl->session_negotiate->id,
                                     n ) ) != 0 )
                 return( ret );
         }
@@ -2895,7 +2895,7 @@
 
         if( ( ret = mbedtls_dhm_make_params( &ssl->handshake->dhm_ctx,
                         (int) mbedtls_mpi_size( &ssl->handshake->dhm_ctx.P ),
-                        p, &len, ssl->f_rng, ssl->p_rng ) ) != 0 )
+                        p, &len, ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_make_params", ret );
             return( ret );
@@ -2960,7 +2960,7 @@
 
         if( ( ret = mbedtls_ecdh_make_params( &ssl->handshake->ecdh_ctx, &len,
                                       p, MBEDTLS_SSL_MAX_CONTENT_LEN - n,
-                                      ssl->f_rng, ssl->p_rng ) ) != 0 )
+                                      ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_make_params", ret );
             return( ret );
@@ -3124,7 +3124,7 @@
 
         if( ( ret = mbedtls_pk_sign( mbedtls_ssl_own_key( ssl ), md_alg, hash, hashlen,
                         p + 2 , &signature_len,
-                        ssl->f_rng, ssl->p_rng ) ) != 0 )
+                        ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_sign", ret );
             return( ret );
@@ -3282,14 +3282,14 @@
      * Also, avoid data-dependant branches here to protect against
      * timing-based variants.
      */
-    ret = ssl->f_rng( ssl->p_rng, fake_pms, sizeof( fake_pms ) );
+    ret = ssl->conf->f_rng( ssl->conf->p_rng, fake_pms, sizeof( fake_pms ) );
     if( ret != 0 )
         return( ret );
 
     ret = mbedtls_pk_decrypt( mbedtls_ssl_own_key( ssl ), p, len,
                       peer_pms, &peer_pmslen,
                       sizeof( peer_pms ),
-                      ssl->f_rng, ssl->p_rng );
+                      ssl->conf->f_rng, ssl->conf->p_rng );
 
     diff  = (size_t) ret;
     diff |= peer_pmslen ^ 48;
@@ -3438,7 +3438,7 @@
         if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx,
                                       ssl->handshake->premaster,
                                      &ssl->handshake->pmslen,
-                                      ssl->f_rng, ssl->p_rng ) ) != 0 )
+                                      ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret );
             return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS );
@@ -3470,7 +3470,7 @@
                                       &ssl->handshake->pmslen,
                                        ssl->handshake->premaster,
                                        MBEDTLS_MPI_MAX_SIZE,
-                                       ssl->f_rng, ssl->p_rng ) ) != 0 )
+                                       ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret );
             return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS );
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 85aa276..c599761 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1108,7 +1108,7 @@
         /* Write length only when we know the actual value */
         if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx,
                                       p + 2, &len,
-                                      ssl->f_rng, ssl->p_rng ) ) != 0 )
+                                      ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret );
             return( ret );
@@ -1129,7 +1129,7 @@
 
         if( ( ret = mbedtls_ecdh_calc_secret( &ssl->handshake->ecdh_ctx, &zlen,
                                        p + 2, end - ( p + 2 ),
-                                       ssl->f_rng, ssl->p_rng ) ) != 0 )
+                                       ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret );
             return( ret );
@@ -1338,7 +1338,7 @@
          * Generate IV
          */
 #if defined(MBEDTLS_SSL_AEAD_RANDOM_IV)
-        ret = ssl->f_rng( ssl->p_rng,
+        ret = ssl->conf->f_rng( ssl->conf->p_rng,
                 ssl->transform_out->iv_enc + ssl->transform_out->fixed_ivlen,
                 ssl->transform_out->ivlen - ssl->transform_out->fixed_ivlen );
         if( ret != 0 )
@@ -1434,7 +1434,7 @@
             /*
              * Generate IV
              */
-            int ret = ssl->f_rng( ssl->p_rng, ssl->transform_out->iv_enc,
+            int ret = ssl->conf->f_rng( ssl->conf->p_rng, ssl->transform_out->iv_enc,
                                   ssl->transform_out->ivlen );
             if( ret != 0 )
                 return( ret );
@@ -5210,12 +5210,12 @@
 }
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
-void mbedtls_ssl_set_rng( mbedtls_ssl_context *ssl,
+void mbedtls_ssl_set_rng( mbedtls_ssl_config *conf,
                   int (*f_rng)(void *, unsigned char *, size_t),
                   void *p_rng )
 {
-    ssl->f_rng      = f_rng;
-    ssl->p_rng      = p_rng;
+    conf->f_rng      = f_rng;
+    conf->p_rng      = p_rng;
 }
 
 void mbedtls_ssl_set_dbg( mbedtls_ssl_config *conf,