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crypto: skcipher - Add separate walker for AEAD decryption

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The AEAD decrypt interface includes the authentication tag in
req->cryptlen.  Therefore we need to exlucde that when doing
a walk over it.

This patch adds separate walker functions for AEAD encryption
and decryption.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Herbert Xu
2016-11-30 21:14:07 +08:00
parent 81126d1a8b
commit 34bc085c83
2 changed files with 34 additions and 3 deletions
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include/crypto/internal/skcipher.h
+4
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@@ -149,6 +149,10 @@ int skcipher_walk_async(struct skcipher_walk *walk,
struct skcipher_request *req);
int skcipher_walk_aead(struct skcipher_walk *walk, struct aead_request *req,
bool atomic);
int skcipher_walk_aead_encrypt(struct skcipher_walk *walk,
struct aead_request *req, bool atomic);
int skcipher_walk_aead_decrypt(struct skcipher_walk *walk,
struct aead_request *req, bool atomic);
void skcipher_walk_complete(struct skcipher_walk *walk, int err);
static inline void ablkcipher_request_complete(struct ablkcipher_request *req,