diff options
| author | Kent Yoder <key@linux.vnet.ibm.com> | 2012-04-05 20:34:20 +0800 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2014-02-10 16:11:38 -0500 |
| commit | 9407270c29e59a669c77b8e31fb901561b7d7682 (patch) | |
| tree | 3a788c6c83cc32539c6ab6f38778ea47d9f5e922 | |
| parent | f126b9e7d62a13fea31fdfeab2e471935326ee09 (diff) | |
crypto: sha512 - Fix byte counter overflow in SHA-512
commit 25c3d30c918207556ae1d6e663150ebdf902186b upstream.
The current code only increments the upper 64 bits of the SHA-512 byte
counter when the number of bytes hashed happens to hit 2^64 exactly.
This patch increments the upper 64 bits whenever the lower 64 bits
overflows.
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -rw-r--r-- | crypto/sha512_generic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/sha512_generic.c b/crypto/sha512_generic.c index 9ed9f60316e5..899b2fa24e50 100644 --- a/crypto/sha512_generic.c +++ b/crypto/sha512_generic.c @@ -177,7 +177,7 @@ sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len) index = sctx->count[0] & 0x7f; /* Update number of bytes */ - if (!(sctx->count[0] += len)) + if ((sctx->count[0] += len) < len) sctx->count[1]++; part_len = 128 - index; |