Merge pull request #9877 from embhorn/f276

Add null check in wolfSSL_EVP_PKEY_encrypt_init / _decrypt_init

Author: douzzer

wolfcrypt/src/evp.c

@@ -3152,8 +3152,8 @@ int wolfSSL_EVP_PKEY_decrypt(WOLFSSL_EVP_PKEY_CTX *ctx,
  */
 int wolfSSL_EVP_PKEY_decrypt_init(WOLFSSL_EVP_PKEY_CTX *ctx)
 {
-    if (ctx == NULL) return WOLFSSL_FAILURE;
     WOLFSSL_ENTER("wolfSSL_EVP_PKEY_decrypt_init");
+    if (ctx == NULL || ctx->pkey == NULL) return WOLFSSL_FAILURE;
     switch (ctx->pkey->type) {
     case WC_EVP_PKEY_RSA:
         ctx->op = WC_EVP_PKEY_OP_DECRYPT;
@@ -3256,8 +3256,8 @@ int wolfSSL_EVP_PKEY_encrypt(WOLFSSL_EVP_PKEY_CTX *ctx,
  */
 int wolfSSL_EVP_PKEY_encrypt_init(WOLFSSL_EVP_PKEY_CTX *ctx)
 {
-    if (ctx == NULL) return WOLFSSL_FAILURE;
     WOLFSSL_ENTER("wolfSSL_EVP_PKEY_encrypt_init");
+    if (ctx == NULL || ctx->pkey == NULL) return WOLFSSL_FAILURE;
 
     switch (ctx->pkey->type) {
     case WC_EVP_PKEY_RSA: