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authorHerbert Xu <herbert@gondor.apana.org.au>2007-11-20 17:26:06 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2008-01-11 08:16:17 +1100
commit7613636def82092a5c7b6322078a2af832410417 (patch)
treea05fec8d522e78d21b7b45f9ac330bcd1372e1af /include/crypto
parentfcd06755936d2209b69650d2a7cc99cbcd3ccc67 (diff)
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[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.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 88619f902c1..2cdb227fc39 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,