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| author | Mandeep Singh Baines <msb@chromium.org> | 2011-06-27 15:41:56 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2011-06-30 07:44:06 +0800 |
| commit | 36ca239b245dbdec3b0c94976e956226bdd4108c (patch) | |
| tree | 2edff3bb1c78edf1b8d8daca05048d01de1e7e9f /crypto | |
| parent | 52527cf3f95d437b02f54437d5c3d7fda06474d1 (diff) | |
| download | lwn-36ca239b245dbdec3b0c94976e956226bdd4108c.tar.gz lwn-36ca239b245dbdec3b0c94976e956226bdd4108c.zip | |
crypto: sha1_generic - use SHA1_BLOCK_SIZE
Modify sha1_update to use SHA1_BLOCK_SIZE.
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/sha1_generic.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/crypto/sha1_generic.c b/crypto/sha1_generic.c index 0416091bf45a..00ae60eb9254 100644 --- a/crypto/sha1_generic.c +++ b/crypto/sha1_generic.c @@ -43,25 +43,26 @@ static int sha1_update(struct shash_desc *desc, const u8 *data, unsigned int partial, done; const u8 *src; - partial = sctx->count & 0x3f; + partial = sctx->count % SHA1_BLOCK_SIZE; sctx->count += len; done = 0; src = data; - if ((partial + len) > 63) { + if ((partial + len) >= SHA1_BLOCK_SIZE) { u32 temp[SHA_WORKSPACE_WORDS]; if (partial) { done = -partial; - memcpy(sctx->buffer + partial, data, done + 64); + memcpy(sctx->buffer + partial, data, + done + SHA1_BLOCK_SIZE); src = sctx->buffer; } do { sha_transform(sctx->state, src, temp); - done += 64; + done += SHA1_BLOCK_SIZE; src = data + done; - } while (done + 63 < len); + } while (done + SHA1_BLOCK_SIZE <= len); memset(temp, 0, sizeof(temp)); partial = 0; |