From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 6 May 2008 06:01:24 +0000 (+0800)
Subject: CRYPTO: eseqiv: Fix off-by-one encryption
X-Git-Tag: v2.6.25.3~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d020055f5217be264e0bac9cd09ffc04233b9682;p=thirdparty%2Fkernel%2Fstable.git

CRYPTO: eseqiv: Fix off-by-one encryption

[CRYPTO] eseqiv: Fix off-by-one encryption

[ Upstream commit: 46f8153cc59384eb09a426d044668d4801f818ce ]

After attaching the IV to the head during encryption, eseqiv does not
increase the encryption length by that amount.  As such the last block
of the actual plain text will be left unencrypted.

Fortunately the only user of this code hifn currently crashes so this
shouldn't affect anyone :)

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/crypto/eseqiv.c b/crypto/eseqiv.c
index b14f14e314b6c..881d309104348 100644
--- a/crypto/eseqiv.c
+++ b/crypto/eseqiv.c
@@ -136,7 +136,8 @@ static int eseqiv_givencrypt(struct skcipher_givcrypt_request *req)
 	}
 
 	ablkcipher_request_set_crypt(subreq, reqctx->src, dst,
-				     req->creq.nbytes, req->creq.info);
+				     req->creq.nbytes + ivsize,
+				     req->creq.info);
 
 	memcpy(req->creq.info, ctx->salt, ivsize);