Coverity CID 1444952: Null pointer dereferences

[openssl.git] / crypto / evp / evp_enc.c

diff --git a/crypto/evp/evp_enc.c b/crypto/evp/evp_enc.c
index 0ccea3599ecbc7916d8e066e6e9761185e89aea2..4bc63703254f841005f43c592df7ef5b11a23489 100644 (file)
--- a/crypto/evp/evp_enc.c
+++ b/crypto/evp/evp_enc.c
@@ -338,6 +338,9 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
 #ifndef OPENSSL_NO_ENGINE
  skip_to_init:
 #endif
+    if (ctx->cipher == NULL)
+        return 0;
+
     /* we assume block size is a power of 2 in *cryptUpdate */
     OPENSSL_assert(ctx->cipher->block_size == 1
                    || ctx->cipher->block_size == 8
@@ -840,6 +843,10 @@ int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
  legacy:
 
     *outl = 0;
+    if (ctx->cipher == NULL) {
+        EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_NO_CIPHER_SET);
+        return 0;
+    }
 
     if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
         i = ctx->cipher->do_cipher(ctx, out, NULL, 0);