From: Andy Polyakov <appro@openssl.org>
Date: Sun, 25 Jul 2004 20:24:49 +0000 (+0000)
Subject: Zero key-length for HMAC is apparently OK.
X-Git-Tag: BEN_FIPS_TEST_6~14^2~123
X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=f10725a6e19f0d72df5789e38601918539e64082;ds=sidebyside

Zero key-length for HMAC is apparently OK.
---

diff --git a/crypto/hmac/hmac.c b/crypto/hmac/hmac.c
index b1aa05b2ea..16d95e08d5 100644
--- a/crypto/hmac/hmac.c
+++ b/crypto/hmac/hmac.c
@@ -89,7 +89,7 @@ void HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
 			}
 		else
 			{
-			OPENSSL_assert(len>0 && len <= (int)sizeof(ctx->key));
+			OPENSSL_assert(len>=0 && len<=(int)sizeof(ctx->key));
 			memcpy(ctx->key,key,len);
 			ctx->key_length=len;
 			}