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

PR: 3002

diff --git a/crypto/evp/e_aes_cbc_hmac_sha1.c b/crypto/evp/e_aes_cbc_hmac_sha1.c
index 2658b9520ab1ce0150095d29d528a3fad3a56214..b8fb706eec9995f07a4c52a6b0a1e6cf20a32147 100644 (file)
--- a/crypto/evp/e_aes_cbc_hmac_sha1.c
+++ b/crypto/evp/e_aes_cbc_hmac_sha1.c
@@ -327,10 +327,11 @@ 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;