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* crypto: hash - Added scatter list walking helperHerbert Xu2008-07-10
| | | | | | | | This patch adds the walking helpers for hash algorithms akin to those of block ciphers. This is a necessary step before we can reimplement existing hash algorithms using the new ahash interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: hash - Removed vestigial ahash fieldsHerbert Xu2008-07-10
| | | | | | | | | The base field in ahash_tfm appears to have been cut-n-pasted from ablkcipher. It isn't needed here at all. Similarly, the info field in ahash_request also appears to have originated from its cipher counter-part and is vestigial. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: hash - Fixed digest size checkHerbert Xu2008-07-10
| | | | | | | | | | | | | | | The digest size check on hash algorithms is incorrect. It's perfectly valid for hash algorithms to have a digest length longer than their block size. For example crc32c has a block size of 1 and a digest size of 4. Rather than having it lie about its block size, this patch fixes the checks to do what they really should which is to bound the digest size so that code placing the digest on the stack continue to work. HMAC however still needs to check this as it's only defined for such algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] hash: Add asynchronous hash supportLoc Ho2008-07-10
This patch adds asynchronous hash and digest support. Signed-off-by: Loc Ho <lho@amcc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>