diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-03-04 13:28:39 +0800 |
|---|---|---|
| committer | Daniel Rosenberg <drosen@google.com> | 2015-01-06 17:46:43 -0800 |
| commit | 971b2479ba9579c201faeb2e4755da12d83f53b7 (patch) | |
| tree | 3526834d53c076ee45789916496f130329b2efa8 /crypto | |
| parent | 382613cbb43b46192a4f973faa9cb97f31b61de3 (diff) | |
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>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/blkcipher.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c index 46fdab5e9cc7..0122bec38564 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) { |