1 files changed, 5 insertions, 3 deletions

diff --git a/src/lib/libcrypto/evp/p5_crpt.c b/src/lib/libcrypto/evp/p5_crpt.c
index 27a8286489..a1874e83b2 100644
--- a/src/lib/libcrypto/evp/p5_crpt.c
+++ b/src/lib/libcrypto/evp/p5_crpt.c
@@ -140,12 +140,14 @@ int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
                 EVP_DigestFinal_ex (&ctx, md_tmp, NULL);
         }
         EVP_MD_CTX_cleanup(&ctx);
+        OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= sizeof md_tmp);
         memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
+        OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16);
         memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
                                                  EVP_CIPHER_iv_length(cipher));
         EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de);
-        memset(md_tmp, 0, EVP_MAX_MD_SIZE);
-        memset(key, 0, EVP_MAX_KEY_LENGTH);
-        memset(iv, 0, EVP_MAX_IV_LENGTH);
+        OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE);
+        OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
+        OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
         return 1;
 }