lkml.org 
[lkml]   [2008]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
DateThu, 8 May 2008 10:42:34 -0700
FromGreg KH <>
Subject[patch 16/16] CRYPTO: eseqiv: Fix off-by-one encryption
2.6.25-stable review patch.  If anyone has any objections, please let us
know.

------------------
From: Herbert Xu <herbert@gondor.apana.org.au>
[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>

---
crypto/eseqiv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/crypto/eseqiv.c
+++ b/crypto/eseqiv.c
@@ -136,7 +136,8 @@ static int eseqiv_givencrypt(struct skci
}

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);

--


\
 
 \ /
  Last update: 2008-05-08 19:53    [from the cache]
©2003-2010