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[CRYPTO] hash: Add asynchronous hash support

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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>
This commit is contained in:
Loc Ho
2008-05-14 20:41:47 +08:00
committed by Herbert Xu
parent 534fe2c1c3
commit 004a403c2e
8 changed files with 507 additions and 15 deletions
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81
crypto/digest.c
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@@ -157,3 +157,84 @@ int crypto_init_digest_ops(struct crypto_tfm *tfm)
void crypto_exit_digest_ops(struct crypto_tfm *tfm)
{
}
static int digest_async_nosetkey(struct crypto_ahash *tfm_async, const u8 *key,
unsigned int keylen)
{
crypto_ahash_clear_flags(tfm_async, CRYPTO_TFM_RES_MASK);
return -ENOSYS;
}
static int digest_async_setkey(struct crypto_ahash *tfm_async, const u8 *key,
unsigned int keylen)
{
struct crypto_tfm *tfm = crypto_ahash_tfm(tfm_async);
struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
crypto_ahash_clear_flags(tfm_async, CRYPTO_TFM_RES_MASK);
return dalg->dia_setkey(tfm, key, keylen);
}
static int digest_async_init(struct ahash_request *req)
{
struct crypto_tfm *tfm = req->base.tfm;
struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
dalg->dia_init(tfm);
return 0;
}
static int digest_async_update(struct ahash_request *req)
{
struct crypto_tfm *tfm = req->base.tfm;
struct hash_desc desc = {
.tfm = __crypto_hash_cast(tfm),
.flags = req->base.flags,
};
update(&desc, req->src, req->nbytes);
return 0;
}
static int digest_async_final(struct ahash_request *req)
{
struct crypto_tfm *tfm = req->base.tfm;
struct hash_desc desc = {
.tfm = __crypto_hash_cast(tfm),
.flags = req->base.flags,
};
final(&desc, req->result);
return 0;
}
static int digest_async_digest(struct ahash_request *req)
{
struct crypto_tfm *tfm = req->base.tfm;
struct hash_desc desc = {
.tfm = __crypto_hash_cast(tfm),
.flags = req->base.flags,
};
return digest(&desc, req->src, req->nbytes, req->result);
}
int crypto_init_digest_ops_async(struct crypto_tfm *tfm)
{
struct ahash_tfm *crt = &tfm->crt_ahash;
struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
if (dalg->dia_digestsize > crypto_tfm_alg_blocksize(tfm))
return -EINVAL;
crt->init = digest_async_init;
crt->update = digest_async_update;
crt->final = digest_async_final;
crt->digest = digest_async_digest;
crt->setkey = dalg->dia_setkey ? digest_async_setkey :
digest_async_nosetkey;
crt->digestsize = dalg->dia_digestsize;
crt->base = __crypto_ahash_cast(tfm);
return 0;
}