prov: 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)

providers/implementations/ciphers/cipher_aes_cbc_hmac_sha1_hw.c

@@ -143,7 +143,7 @@ static size_t tls1_multi_block_encrypt(void *vctx,
 #  endif
 
     /* ask for IVs in bulk */
-    if (RAND_bytes_ex(ctx->base.libctx, (IVs = blocks[0].c), 16 * x4) <= 0)
+    if (RAND_bytes_ex(ctx->base.libctx, (IVs = blocks[0].c), 16 * x4, 0) <= 0)
         return 0;
 
     mctx = (SHA1_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */

providers/implementations/ciphers/cipher_aes_cbc_hmac_sha256_hw.c

@@ -147,7 +147,7 @@ static size_t tls1_multi_block_encrypt(void *vctx,
 #  endif
 
     /* ask for IVs in bulk */
-    if (RAND_bytes_ex(ctx->base.libctx, (IVs = blocks[0].c), 16 * x4) <= 0)
+    if (RAND_bytes_ex(ctx->base.libctx, (IVs = blocks[0].c), 16 * x4, 0) <= 0)
         return 0;
 
     mctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */

providers/implementations/ciphers/cipher_des.c

@@ -122,7 +122,7 @@ static int des_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
     DES_cblock *deskey = ptr;
     size_t kl = ctx->keylen;
 
-    if (kl == 0 || RAND_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
+    if (kl == 0 || RAND_priv_bytes_ex(ctx->libctx, ptr, kl, 0) <= 0)
         return 0;
     DES_set_odd_parity(deskey);
     return 1;

providers/implementations/ciphers/cipher_tdes_common.c

@@ -120,7 +120,7 @@ static int tdes_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
     DES_cblock *deskey = ptr;
     size_t kl = ctx->keylen;
 
-    if (kl == 0 || RAND_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
+    if (kl == 0 || RAND_priv_bytes_ex(ctx->libctx, ptr, kl, 0) <= 0)
         return 0;
     DES_set_odd_parity(deskey);
     if (kl >= 16)

providers/implementations/ciphers/cipher_tdes_wrap.c

@@ -97,7 +97,7 @@ static int des_ede3_wrap(PROV_CIPHER_CTX *ctx, unsigned char *out,
     memcpy(out + inl + ivlen, sha1tmp, icvlen);
     OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
     /* Generate random IV */
-    if (RAND_bytes_ex(ctx->libctx, ctx->iv, ivlen) <= 0)
+    if (RAND_bytes_ex(ctx->libctx, ctx->iv, ivlen, 0) <= 0)
         return 0;
     memcpy(out, ctx->iv, ivlen);
     /* Encrypt everything after IV in place */

providers/implementations/ciphers/ciphercommon_gcm.c

@@ -371,7 +371,7 @@ static int gcm_iv_generate(PROV_GCM_CTX *ctx, int offset)
         return 0;
 
     /* Use DRBG to generate random iv */
-    if (RAND_bytes_ex(ctx->libctx, ctx->iv + offset, sz) <= 0)
+    if (RAND_bytes_ex(ctx->libctx, ctx->iv + offset, sz, 0) <= 0)
         return 0;
     ctx->iv_state = IV_STATE_BUFFERED;
     ctx->iv_gen_rand = 1;
@@ -485,7 +485,7 @@ static int gcm_tls_iv_set_fixed(PROV_GCM_CTX *ctx, unsigned char *iv,
     if (len > 0)
         memcpy(ctx->iv, iv, len);
     if (ctx->enc
-        && RAND_bytes_ex(ctx->libctx, ctx->iv + len, ctx->ivlen - len) <= 0)
+        && RAND_bytes_ex(ctx->libctx, ctx->iv + len, ctx->ivlen - len, 0) <= 0)
             return 0;
     ctx->iv_gen = 1;
     ctx->iv_state = IV_STATE_BUFFERED;

providers/implementations/kem/rsa_kem.c

@@ -229,7 +229,7 @@ static int rsasve_gen_rand_bytes(RSA *rsa_pub,
     ret = (z != NULL
            && (BN_copy(nminus3, RSA_get0_n(rsa_pub)) != NULL)
            && BN_sub_word(nminus3, 3)
-           && BN_priv_rand_range_ex(z, nminus3, bnctx)
+           && BN_priv_rand_range_ex(z, nminus3, 0, bnctx)
            && BN_add_word(z, 2)
            && (BN_bn2binpad(z, out, outlen) == outlen));
     BN_CTX_end(bnctx);

providers/implementations/keymgmt/ecx_kmgmt.c

@@ -577,7 +577,7 @@ static void *ecx_gen(struct ecx_gen_ctx *gctx)
         ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
         goto err;
     }
-    if (RAND_priv_bytes_ex(gctx->libctx, privkey, key->keylen) <= 0)
+    if (RAND_priv_bytes_ex(gctx->libctx, privkey, key->keylen, 0) <= 0)
         goto err;
     switch (gctx->type) {
     case ECX_KEY_TYPE_X25519:
@@ -836,7 +836,7 @@ static void *s390x_ecx_keygen25519(struct ecx_gen_ctx *gctx)
         goto err;
     }
 
-    if (RAND_priv_bytes_ex(gctx->libctx, privkey, X25519_KEYLEN) <= 0)
+    if (RAND_priv_bytes_ex(gctx->libctx, privkey, X25519_KEYLEN, 0) <= 0)
         goto err;
 
     privkey[0] &= 248;
@@ -882,7 +882,7 @@ static void *s390x_ecx_keygen448(struct ecx_gen_ctx *gctx)
         goto err;
     }
 
-    if (RAND_priv_bytes_ex(gctx->libctx, privkey, X448_KEYLEN) <= 0)
+    if (RAND_priv_bytes_ex(gctx->libctx, privkey, X448_KEYLEN, 0) <= 0)
         goto err;
 
     privkey[0] &= 252;
@@ -934,7 +934,7 @@ static void *s390x_ecd_keygen25519(struct ecx_gen_ctx *gctx)
         goto err;
     }
 
-    if (RAND_priv_bytes_ex(gctx->libctx, privkey, ED25519_KEYLEN) <= 0)
+    if (RAND_priv_bytes_ex(gctx->libctx, privkey, ED25519_KEYLEN, 0) <= 0)
         goto err;
 
     sha = EVP_MD_fetch(gctx->libctx, "SHA512", gctx->propq);
@@ -1004,7 +1004,7 @@ static void *s390x_ecd_keygen448(struct ecx_gen_ctx *gctx)
     shake = EVP_MD_fetch(gctx->libctx, "SHAKE256", gctx->propq);
     if (shake == NULL)
         goto err;
-    if (RAND_priv_bytes_ex(gctx->libctx, privkey, ED448_KEYLEN) <= 0)
+    if (RAND_priv_bytes_ex(gctx->libctx, privkey, ED448_KEYLEN, 0) <= 0)
         goto err;
 
     hashctx = EVP_MD_CTX_new();