path: root/include/crypto/chacha20.h
diff options
authorArd Biesheuvel <ard.biesheuvel@linaro.org>2016-12-09 14:33:51 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2016-12-27 17:47:31 +0800
commit9ae433bc79f97bae221d53bb1a8e21415ea58625 (patch)
treea6eb8988adfcc7ba73bdca2b580db55a31e3077f /include/crypto/chacha20.h
parentcrypto: arm/chacha20 - implement NEON version based on SSE3 code (diff)
crypto: chacha20 - convert generic and x86 versions to skcipher
This converts the ChaCha20 code from a blkcipher to a skcipher, which is now the preferred way to implement symmetric block and stream ciphers. This ports the generic and x86 versions at the same time because the latter reuses routines of the former. Note that the skcipher_walk() API guarantees that all presented blocks except the final one are a multiple of the chunk size, so we can simplify the encrypt() routine somewhat. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto/chacha20.h')
1 files changed, 3 insertions, 3 deletions
diff --git a/include/crypto/chacha20.h b/include/crypto/chacha20.h
index 20d20f681a72..445fc45f4b5b 100644
--- a/include/crypto/chacha20.h
+++ b/include/crypto/chacha20.h
@@ -5,6 +5,7 @@
#ifndef _CRYPTO_CHACHA20_H
#define _CRYPTO_CHACHA20_H
+#include <crypto/skcipher.h>
#include <linux/types.h>
#include <linux/crypto.h>
@@ -18,9 +19,8 @@ struct chacha20_ctx {
void chacha20_block(u32 *state, void *stream);
void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv);
-int crypto_chacha20_setkey(struct crypto_tfm *tfm, const u8 *key,
+int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keysize);
-int crypto_chacha20_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes);
+int crypto_chacha20_crypt(struct skcipher_request *req);