From: Andy Polyakov <appro@openssl.org>
Date: Sun, 3 Feb 2013 19:04:39 +0000 (+0100)
Subject: e_aes_cbc_hmac_sha1.c: cleanse temporary copy of HMAC secret.
X-Git-Tag: OpenSSL_1_0_2-beta1~425
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=af010edd5528176cd39d024dc078f0a541043502;p=openssl

e_aes_cbc_hmac_sha1.c: cleanse temporary copy of HMAC secret.
(cherry picked from commit 529d27ea472fc2c7ba9190a15a58cb84012d4ec6)
---

diff --git a/crypto/evp/e_aes_cbc_hmac_sha1.c b/crypto/evp/e_aes_cbc_hmac_sha1.c
index 18fc921010..b7aff44d28 100644
--- a/crypto/evp/e_aes_cbc_hmac_sha1.c
+++ b/crypto/evp/e_aes_cbc_hmac_sha1.c
@@ -474,6 +474,8 @@ static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void
 		SHA1_Init(&key->tail);
 		SHA1_Update(&key->tail,hmac_key,sizeof(hmac_key));
 
+		OPENSSL_cleanse(hmac_key,sizeof(hmac_key));
+
 		return 1;
 		}
 	case EVP_CTRL_AEAD_TLS1_AAD: