From: Dr. Stephen Henson <steve@openssl.org>
Date: Wed, 11 Apr 2012 12:26:13 +0000 (+0000)
Subject: make reinitialisation work for CMAC
X-Git-Tag: OpenSSL_1_0_1a~18
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a7612c506624a8f249703fbfd7cf2131826a17fc;p=openssl

make reinitialisation work for CMAC
---

diff --git a/crypto/cmac/cmac.c b/crypto/cmac/cmac.c
index b58602680b..7ae776e3fc 100644
--- a/crypto/cmac/cmac.c
+++ b/crypto/cmac/cmac.c
@@ -179,6 +179,8 @@ int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
 			return 0;
 		if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
 			return 0;
+		memset(ctx->tbl, 0, bl);
+		ctx->nlast_block = 0;
 		return 1;
 		}
 	/* Initialiase context */