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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-03-04 13:28:39 +0800 |
|---|---|---|
| committer | JP Abgrall <jpa@google.com> | 2014-08-28 10:22:27 -0700 |
| commit | 15aaa954da86024fa1b4e1c26b162fb7be84d2df (patch) | |
| tree | 9e17d49a379b6d7cd09037e92e3a5df31bde6092 | |
| parent | 29c0c76ffbf9208b6348cef882dd053a6190bb66 (diff) | |
| download | edison-v3.10-15aaa954da86024fa1b4e1c26b162fb7be84d2df.tar.gz | |
crypto: allow blkcipher walks over AEAD data
This adds the function blkcipher_aead_walk_virt_block, which allows the caller
to use the blkcipher walk API to handle the input and output scatterlists.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/blkcipher.c | 14 | ||||
| -rw-r--r-- | include/crypto/algapi.h | 4 |
2 files changed, 18 insertions, 0 deletions
diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c index 46fdab5e9cc..0122bec3856 100644 --- a/crypto/blkcipher.c +++ b/crypto/blkcipher.c @@ -357,6 +357,20 @@ int blkcipher_walk_virt_block(struct blkcipher_desc *desc, } EXPORT_SYMBOL_GPL(blkcipher_walk_virt_block); +int blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc, + struct blkcipher_walk *walk, + struct crypto_aead *tfm, + unsigned int blocksize) +{ + walk->flags &= ~BLKCIPHER_WALK_PHYS; + walk->walk_blocksize = blocksize; + walk->cipher_blocksize = crypto_aead_blocksize(tfm); + walk->ivsize = crypto_aead_ivsize(tfm); + walk->alignmask = crypto_aead_alignmask(tfm); + return blkcipher_walk_first(desc, walk); +} +EXPORT_SYMBOL_GPL(blkcipher_aead_walk_virt_block); + static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) { diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 6c4d916d739..063f8ef4930 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -195,6 +195,10 @@ int blkcipher_walk_phys(struct blkcipher_desc *desc, int blkcipher_walk_virt_block(struct blkcipher_desc *desc, struct blkcipher_walk *walk, unsigned int blocksize); +int blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc, + struct blkcipher_walk *walk, + struct crypto_aead *tfm, + unsigned int blocksize); int ablkcipher_walk_done(struct ablkcipher_request *req, struct ablkcipher_walk *walk, int err); |