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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-11-20 17:26:06 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-01-11 08:16:17 +1100 |
| commit | 7613636def82092a5c7b6322078a2af832410417 (patch) | |
| tree | a05fec8d522e78d21b7b45f9ac330bcd1372e1af /include/crypto | |
| parent | fcd06755936d2209b69650d2a7cc99cbcd3ccc67 (diff) | |
| download | linux-7613636def82092a5c7b6322078a2af832410417.tar.gz linux-7613636def82092a5c7b6322078a2af832410417.tar.bz2 linux-7613636def82092a5c7b6322078a2af832410417.zip | |
[CRYPTO] api: Add crypto_inc and crypto_xor
With the addition of more stream ciphers we need to curb the proliferation
of ad-hoc xor functions. This patch creates a generic pair of functions,
crypto_inc and crypto_xor which does big-endian increment and exclusive or,
respectively.
For optimum performance, they both use u32 operations so alignment must be
as that of u32 even though the arguments are of type u8 *.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/algapi.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 88619f902c10..2cdb227fc39d 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -124,6 +124,10 @@ int crypto_enqueue_request(struct crypto_queue *queue, struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue); int crypto_tfm_in_queue(struct crypto_queue *queue, struct crypto_tfm *tfm); +/* These functions require the input/output to be aligned as u32. */ +void crypto_inc(u8 *a, unsigned int size); +void crypto_xor(u8 *dst, const u8 *src, unsigned int size); + int blkcipher_walk_done(struct blkcipher_desc *desc, struct blkcipher_walk *walk, int err); int blkcipher_walk_virt(struct blkcipher_desc *desc, |