From: Andy Polyakov <appro@openssl.org>
Date: Mon, 18 Mar 2013 18:29:41 +0000 (+0100)
Subject: e_aes_cbc_hmac_sha1.c: fix rare bad record mac on AES-NI plaforms.
X-Git-Tag: OpenSSL_1_0_1f~79
X-Git-Url: http://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=9ab3ce124616cb12bd39c6aa1e1bde0f46969b29;hp=3972dbe462c1e39f53892833d55941383c6854c4

e_aes_cbc_hmac_sha1.c: fix rare bad record mac on AES-NI plaforms.

PR: 3002
(cherry picked from commit 5c60046553716fcf160718f59160493194f212dc)
---

diff --git a/crypto/evp/e_aes_cbc_hmac_sha1.c b/crypto/evp/e_aes_cbc_hmac_sha1.c
index 483e04b..fb2c884 100644
--- a/crypto/evp/e_aes_cbc_hmac_sha1.c
+++ b/crypto/evp/e_aes_cbc_hmac_sha1.c
@@ -328,10 +328,11 @@ static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 
 				if (res!=SHA_CBLOCK) continue;
 
-				mask = 0-((inp_len+8-j)>>(sizeof(j)*8-1));
+				/* j is not incremented yet */
+				mask = 0-((inp_len+7-j)>>(sizeof(j)*8-1));
 				data->u[SHA_LBLOCK-1] |= bitlen&mask;
 				sha1_block_data_order(&key->md,data,1);
-				mask &= 0-((j-inp_len-73)>>(sizeof(j)*8-1));
+				mask &= 0-((j-inp_len-72)>>(sizeof(j)*8-1));
 				pmac->u[0] |= key->md.h0 & mask;
 				pmac->u[1] |= key->md.h1 & mask;
 				pmac->u[2] |= key->md.h2 & mask;