From 76c7d6b3c7d8593bbe0429e271a2a278f3e6e39f Mon Sep 17 00:00:00 2001
From: Krzysztof Halasa <khc@pm.waw.pl>
Date: Thu, 7 Jun 2012 15:05:11 +0200
Subject: [PATCH] Fix SHA224 to produce 28 bytes of hash (instead of 32).
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This fixes a panic in sha224sum.

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 crypto/sha2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crypto/sha2.c b/crypto/sha2.c
index 3096efe92..afbe0c3e3 100644
--- a/crypto/sha2.c
+++ b/crypto/sha2.c
@@ -274,7 +274,8 @@ static void sha2_finish(sha2_context * ctx, uint8_t digest[32])
 	PUT_UINT32_BE(ctx->state[4], digest, 16);
 	PUT_UINT32_BE(ctx->state[5], digest, 20);
 	PUT_UINT32_BE(ctx->state[6], digest, 24);
-	PUT_UINT32_BE(ctx->state[7], digest, 28);
+	if (!ctx->is224)
+		PUT_UINT32_BE(ctx->state[7], digest, 28);
 }
 
 struct sha2 {