diff --git a/library/ssl_client.c b/library/ssl_client.c
index be4d621..f8abfde 100644
--- a/library/ssl_client.c
+++ b/library/ssl_client.c
@@ -725,8 +725,7 @@
 #endif /* MBEDTLS_HAVE_TIME */
     }
 
-    ret = ssl->conf->f_rng(ssl->conf->p_rng,
-                           randbytes + gmt_unix_time_len,
+    ret = psa_generate_random(randbytes + gmt_unix_time_len,
                            MBEDTLS_CLIENT_HELLO_RANDOM_LEN - gmt_unix_time_len);
     return ret;
 }
@@ -867,8 +866,8 @@
     if (session_id_len != session_negotiate->id_len) {
         session_negotiate->id_len = session_id_len;
         if (session_id_len > 0) {
-            ret = ssl->conf->f_rng(ssl->conf->p_rng,
-                                   session_negotiate->id,
+
+            ret = psa_generate_random(session_negotiate->id,
                                    session_id_len);
             if (ret != 0) {
                 MBEDTLS_SSL_DEBUG_RET(1, "creating session id failed", ret);
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index d12cee3..e51a3df 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -1721,9 +1721,7 @@
 MBEDTLS_CHECK_RETURN_CRITICAL
 int mbedtls_ssl_encrypt_buf(mbedtls_ssl_context *ssl,
                             mbedtls_ssl_transform *transform,
-                            mbedtls_record *rec,
-                            int (*f_rng)(void *, unsigned char *, size_t),
-                            void *p_rng);
+                            mbedtls_record *rec);
 MBEDTLS_CHECK_RETURN_CRITICAL
 int mbedtls_ssl_decrypt_buf(mbedtls_ssl_context const *ssl,
                             mbedtls_ssl_transform *transform,
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index f5ea8dd..96c1a7c 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -801,9 +801,7 @@
 
 int mbedtls_ssl_encrypt_buf(mbedtls_ssl_context *ssl,
                             mbedtls_ssl_transform *transform,
-                            mbedtls_record *rec,
-                            int (*f_rng)(void *, unsigned char *, size_t),
-                            void *p_rng)
+                            mbedtls_record *rec)
 {
     mbedtls_ssl_mode_t ssl_mode;
     int auth_done = 0;
@@ -1140,10 +1138,6 @@
          * Prepend per-record IV for block cipher in TLS v1.2 as per
          * Method 1 (6.2.3.2. in RFC4346 and RFC5246)
          */
-        if (f_rng == NULL) {
-            MBEDTLS_SSL_DEBUG_MSG(1, ("No PRNG provided to encrypt_record routine"));
-            return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
-        }
 
         if (rec->data_offset < transform->ivlen) {
             MBEDTLS_SSL_DEBUG_MSG(1, ("Buffer provided for encrypted record not large enough"));
@@ -1153,7 +1147,7 @@
         /*
          * Generate IV
          */
-        ret = f_rng(p_rng, transform->iv_enc, transform->ivlen);
+        ret = psa_generate_random(transform->iv_enc, transform->ivlen);
         if (ret != 0) {
             return ret;
         }
@@ -2725,8 +2719,7 @@
             rec.cid_len = 0;
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
-            if ((ret = mbedtls_ssl_encrypt_buf(ssl, ssl->transform_out, &rec,
-                                               ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
+            if ((ret = mbedtls_ssl_encrypt_buf(ssl, ssl->transform_out, &rec)) != 0) {
                 MBEDTLS_SSL_DEBUG_RET(1, "ssl_encrypt_buf", ret);
                 return ret;
             }
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 8f90fa1..20a2538 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1223,11 +1223,6 @@
         return ret;
     }
 
-    if (ssl->conf->f_rng == NULL) {
-        MBEDTLS_SSL_DEBUG_MSG(1, ("no RNG provided"));
-        return MBEDTLS_ERR_SSL_NO_RNG;
-    }
-
     /* Space for further checks */
 
     return 0;
@@ -1249,6 +1244,7 @@
     if ((ret = ssl_conf_check(ssl)) != 0) {
         return ret;
     }
+
     ssl->tls_version = ssl->conf->max_tls_version;
 
     /*
@@ -1289,6 +1285,10 @@
         goto error;
     }
 
+    if((ret = psa_crypto_init()) != 0) {
+        goto error;
+    }
+
     return 0;
 
 error:
diff --git a/library/ssl_tls12_server.c b/library/ssl_tls12_server.c
index 84d5994..d3c4223 100644
--- a/library/ssl_tls12_server.c
+++ b/library/ssl_tls12_server.c
@@ -2133,14 +2133,14 @@
     MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, current time: %" MBEDTLS_PRINTF_LONGLONG,
                               (long long) t));
 #else
-    if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, p, 4)) != 0) {
+    if ((ret = psa_generate_random(ssl->conf->p_rng, p, 4)) != 0) {
         return ret;
     }
 
     p += 4;
 #endif /* MBEDTLS_HAVE_TIME */
 
-    if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, p, 20)) != 0) {
+    if ((ret = psa_generate_random(p, 20)) != 0) {
         return ret;
     }
     p += 20;
@@ -2166,7 +2166,8 @@
     } else
 #endif
     {
-        if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, p, 8)) != 0) {
+	    
+        if ((ret = psa_generate_random(p, 8)) != 0) {
             return ret;
         }
     }
@@ -2197,7 +2198,7 @@
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
         {
             ssl->session_negotiate->id_len = n = 32;
-            if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, ssl->session_negotiate->id,
+            if ((ret = psa_generate_random(ssl->session_negotiate->id,
                                         n)) != 0) {
                 return ret;
             }
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 1dde4ab..4ef23f8 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -1996,7 +1996,7 @@
     unsigned char *server_randbytes =
         ssl->handshake->randbytes + MBEDTLS_CLIENT_HELLO_RANDOM_LEN;
 
-    if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, server_randbytes,
+    if ((ret = psa_generate_random(server_randbytes,
                                 MBEDTLS_SERVER_HELLO_RANDOM_LEN)) != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "f_rng", ret);
         return ret;
@@ -3172,8 +3172,7 @@
 #endif
 
     /* Generate ticket_age_add */
-    if ((ret = ssl->conf->f_rng(ssl->conf->p_rng,
-                                (unsigned char *) &session->ticket_age_add,
+    if ((ret = psa_generate_random((unsigned char *) &session->ticket_age_add,
                                 sizeof(session->ticket_age_add)) != 0)) {
         MBEDTLS_SSL_DEBUG_RET(1, "generate_ticket_age_add", ret);
         return ret;
@@ -3182,7 +3181,7 @@
                               (unsigned int) session->ticket_age_add));
 
     /* Generate ticket_nonce */
-    ret = ssl->conf->f_rng(ssl->conf->p_rng, ticket_nonce, ticket_nonce_size);
+    ret = psa_generate_random(ticket_nonce, ticket_nonce_size);
     if (ret != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "generate_ticket_nonce", ret);
         return ret;