From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Wed, 21 Dec 2005 11:01:58 +0000 (+0800)
Subject: [CRYPTO] sha1: Fixed off-by-64 bug in sha1_update
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bcb0ad2b34daade529ce1f38eede0ea8b7309535;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[CRYPTO] sha1: Fixed off-by-64 bug in sha1_update

After a partial update, the done pointer is off to the right by 64 bytes.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/crypto/sha1.c b/crypto/sha1.c
index 8048e2dd3c14..21571ed35b7e 100644
--- a/crypto/sha1.c
+++ b/crypto/sha1.c
@@ -61,8 +61,8 @@ static void sha1_update(void *ctx, const u8 *data, unsigned int len)
 		u32 temp[SHA_WORKSPACE_WORDS];
 
 		if (partial) {
-			done = 64 - partial;
-			memcpy(sctx->buffer + partial, data, done);
+			done = -partial;
+			memcpy(sctx->buffer + partial, data, done + 64);
 			src = sctx->buffer;
 		}