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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2008-11-02 21:38:11 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-12-25 11:01:30 +1100 |
| commit | dec8b78606ebd5f309c38f2fb10196ce996dd18d (patch) | |
| tree | 005ef526f1b0e953a3a57e6c991e0921fcd5234b /include/linux/crypto.h | |
| parent | crypto: hash - Export shash through ahash (diff) | |
| download | linux-dev-dec8b78606ebd5f309c38f2fb10196ce996dd18d.tar.xz linux-dev-dec8b78606ebd5f309c38f2fb10196ce996dd18d.zip | |
crypto: hash - Add import/export interface
It is often useful to save the partial state of a hash function
so that it can be used as a base for two or more computations.
The most prominent example is HMAC where all hashes start from
a base determined by the key. Having an import/export interface
means that we only have to compute that base once rather than
for each message.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/linux/crypto.h')
| -rw-r--r-- | include/linux/crypto.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 44c72f0f9b05..77a1f3d9416d 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -221,6 +221,7 @@ struct ablkcipher_alg { struct ahash_alg { int (*init)(struct ahash_request *req); + int (*reinit)(struct ahash_request *req); int (*update)(struct ahash_request *req); int (*final)(struct ahash_request *req); int (*digest)(struct ahash_request *req); |