ssl: add zero strenght arguments to BN and RAND RNG calls

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15513)

8 files changed, 18 insertions, 18 deletions

diff --git a/ssl/record/ssl3_record.c b/ssl/record/ssl3_record.c
index ec7d448d39..8788d49e4c 100644
--- a/ssl/record/ssl3_record.c
+++ b/ssl/record/ssl3_record.c
@@ -997,7 +997,7 @@ int tls1_enc(SSL *s, SSL3_RECORD *recs, size_t n_recs, int sending,
                         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
                         return 0;
                     } else if (RAND_bytes_ex(s->ctx->libctx, recs[ctr].input,
-                                             ivlen) <= 0) {
+                                             ivlen, 0) <= 0) {
                         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
                         return 0;
                     }
diff --git a/ssl/record/tls_pad.c b/ssl/record/tls_pad.c
index 8383ce8d1c..54ff9cdf36 100644
--- a/ssl/record/tls_pad.c
+++ b/ssl/record/tls_pad.c
@@ -253,7 +253,7 @@ static int ssl3_cbc_copy_mac(size_t *reclen,
     }
 
     /* Create the random MAC we will emit if padding is bad */
-    if (!RAND_bytes_ex(libctx, randmac, mac_size))
+    if (!RAND_bytes_ex(libctx, randmac, mac_size, 0))
         return 0;
 
     if (!ossl_assert(mac != NULL && alloced != NULL))
diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c
index 7839a4d318..348d02d8bd 100644
--- a/ssl/s3_lib.c
+++ b/ssl/s3_lib.c
@@ -4552,9 +4552,9 @@ int ssl_fill_hello_random(SSL *s, int server, unsigned char *result, size_t len,
         unsigned char *p = result;
 
         l2n(Time, p);
-        ret = RAND_bytes_ex(s->ctx->libctx, p, len - 4);
+        ret = RAND_bytes_ex(s->ctx->libctx, p, len - 4, 0);
     } else {
-        ret = RAND_bytes_ex(s->ctx->libctx, result, len);
+        ret = RAND_bytes_ex(s->ctx->libctx, result, len, 0);
     }
 
     if (ret > 0) {
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index f35eaf07c5..af95f2e056 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -3284,15 +3284,15 @@ SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
 
     /* Setup RFC5077 ticket keys */
     if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
-                       sizeof(ret->ext.tick_key_name)) <= 0)
+                       sizeof(ret->ext.tick_key_name), 0) <= 0)
         || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
-                               sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
+                               sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
         || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
-                               sizeof(ret->ext.secure->tick_aes_key)) <= 0))
+                               sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
         ret->options |= SSL_OP_NO_TICKET;
 
     if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
-                           sizeof(ret->ext.cookie_hmac_key)) <= 0)
+                           sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
         goto err;
 
 #ifndef OPENSSL_NO_SRP
diff --git a/ssl/ssl_sess.c b/ssl/ssl_sess.c
index 88bdd14dc8..3409795628 100644
--- a/ssl/ssl_sess.c
+++ b/ssl/ssl_sess.c
@@ -264,7 +264,7 @@ static int def_generate_session_id(SSL *ssl, unsigned char *id,
 {
     unsigned int retry = 0;
     do
-        if (RAND_bytes_ex(ssl->ctx->libctx, id, *id_len) <= 0)
+        if (RAND_bytes_ex(ssl->ctx->libctx, id, *id_len, 0) <= 0)
             return 0;
     while (SSL_has_matching_session_id(ssl, id, *id_len) &&
            (++retry < MAX_SESS_ID_ATTEMPTS)) ;
diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index ad1d0e7e05..c10a1e46b2 100644
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -1191,7 +1191,7 @@ int tls_construct_client_hello(SSL *s, WPACKET *pkt)
             session_id = s->tmp_session_id;
             if (s->hello_retry_request == SSL_HRR_NONE
                     && RAND_bytes_ex(s->ctx->libctx, s->tmp_session_id,
-                                     sess_id_len) <= 0) {
+                                     sess_id_len, 0) <= 0) {
                 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
                 return 0;
             }
@@ -2853,7 +2853,7 @@ static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt)
     pms[0] = s->client_version >> 8;
     pms[1] = s->client_version & 0xff;
     /* TODO(size_t): Convert this function */
-    if (RAND_bytes_ex(s->ctx->libctx, pms + 2, (int)(pmslen - 2)) <= 0) {
+    if (RAND_bytes_ex(s->ctx->libctx, pms + 2, (int)(pmslen - 2), 0) <= 0) {
         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
         goto err;
     }
@@ -3060,7 +3060,7 @@ static int tls_construct_cke_gost(SSL *s, WPACKET *pkt)
         /* Generate session key
          * TODO(size_t): Convert this function
          */
-        || RAND_bytes_ex(s->ctx->libctx, pms, (int)pmslen) <= 0) {
+        || RAND_bytes_ex(s->ctx->libctx, pms, (int)pmslen, 0) <= 0) {
         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
         goto err;
     };
@@ -3185,7 +3185,7 @@ static int tls_construct_cke_gost18(SSL *s, WPACKET *pkt)
         goto err;
     }
 
-    if (RAND_bytes_ex(s->ctx->libctx, pms, (int)pmslen) <= 0) {
+    if (RAND_bytes_ex(s->ctx->libctx, pms, (int)pmslen, 0) <= 0) {
         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
         goto err;
     }
diff --git a/ssl/statem/statem_srvr.c b/ssl/statem/statem_srvr.c
index 56d4b4591a..bf4a486a8d 100644
--- a/ssl/statem/statem_srvr.c
+++ b/ssl/statem/statem_srvr.c
@@ -2738,7 +2738,7 @@ int tls_construct_certificate_request(SSL *s, WPACKET *pkt)
                 return 0;
             }
             if (RAND_bytes_ex(s->ctx->libctx, s->pha_context,
-                                     s->pha_context_len) <= 0
+                                     s->pha_context_len, 0) <= 0
                     || !WPACKET_sub_memcpy_u8(pkt, s->pha_context,
                                               s->pha_context_len)) {
                 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
@@ -3778,7 +3778,7 @@ static int construct_stateless_ticket(SSL *s, WPACKET *pkt, uint32_t age_add,
         }
 
         iv_len = EVP_CIPHER_iv_length(cipher);
-        if (RAND_bytes_ex(s->ctx->libctx, iv, iv_len) <= 0
+        if (RAND_bytes_ex(s->ctx->libctx, iv, iv_len, 0) <= 0
                 || !EVP_EncryptInit_ex(ctx, cipher, NULL,
                                        tctx->ext.secure->tick_aes_key, iv)
                 || !ssl_hmac_init(hctx, tctx->ext.secure->tick_hmac_key,
@@ -3905,7 +3905,7 @@ int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt)
             goto err;
         }
         if (RAND_bytes_ex(s->ctx->libctx, age_add_u.age_add_c,
-                          sizeof(age_add_u)) <= 0) {
+                          sizeof(age_add_u), 0) <= 0) {
             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
             goto err;
         }
diff --git a/ssl/tls_srp.c b/ssl/tls_srp.c
index 430cd7dae8..0ce3290dc4 100644
--- a/ssl/tls_srp.c
+++ b/ssl/tls_srp.c
@@ -203,7 +203,7 @@ int ssl_srp_server_param_with_username_intern(SSL *s, int *ad)
         (s->srp_ctx.s == NULL) || (s->srp_ctx.v == NULL))
         return SSL3_AL_FATAL;
 
-    if (RAND_priv_bytes_ex(s->ctx->libctx, b, sizeof(b)) <= 0)
+    if (RAND_priv_bytes_ex(s->ctx->libctx, b, sizeof(b), 0) <= 0)
         return SSL3_AL_FATAL;
     s->srp_ctx.b = BN_bin2bn(b, sizeof(b), NULL);
     OPENSSL_cleanse(b, sizeof(b));
@@ -420,7 +420,7 @@ int ssl_srp_calc_a_param_intern(SSL *s)
 {
     unsigned char rnd[SSL_MAX_MASTER_KEY_LENGTH];
 
-    if (RAND_priv_bytes_ex(s->ctx->libctx, rnd, sizeof(rnd)) <= 0)
+    if (RAND_priv_bytes_ex(s->ctx->libctx, rnd, sizeof(rnd), 0) <= 0)
         return 0;
     s->srp_ctx.a = BN_bin2bn(rnd, sizeof(rnd), s->srp_ctx.a);
     OPENSSL_cleanse(rnd, sizeof(rnd));