From: Krzysztof Jackiewicz <k.jackiewicz@samsung.com>
Date: Thu, 23 Jun 2016 12:15:36 +0000 (+0200)
Subject: Enforce NULL data for empty digest input
X-Git-Tag: accepted/tizen/common/20160810.161523~38
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=285b3432bf25b440abf3fc2e6f086266d5b8ffda;p=platform%2Fcore%2Fsecurity%2Fyaca.git

Enforce NULL data for empty digest input

Change-Id: I7fbd82b9aea2c9c2b712d72e09ac014d2dcf6a2f
---

diff --git a/src/simple.c b/src/simple.c
index a621281..f8f5537 100644
--- a/src/simple.c
+++ b/src/simple.c
@@ -44,7 +44,8 @@ API int yaca_simple_calculate_digest(yaca_digest_algorithm_e algo,
 	char *ldigest = NULL;
 	size_t ldigest_len;
 
-	if ((data == NULL && data_len > 0) || digest == NULL || digest_len == NULL)
+	if ((data == NULL && data_len > 0) || (data != NULL && data_len == 0) ||
+	    digest == NULL || digest_len == NULL)
 		return YACA_ERROR_INVALID_PARAMETER;
 
 	ret = yaca_digest_initialize(&ctx, algo);