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Commit 6fba00d1 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: cryptd - Add finup/export/import for hash 



This patch adds the finup/export/import functions to the cryptd
ahash implementation.  We simply invoke the underlying shash
operations.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 2a549c36

crypto/cryptd.c

+40 −0
Original line number Diff line number Diff line
@@ -478,6 +478,29 @@ static int cryptd_hash_final_enqueue(struct ahash_request *req) 
	return cryptd_hash_enqueue(req, cryptd_hash_final);

}



static void cryptd_hash_finup(struct crypto_async_request *req_async, int err)

{

	struct ahash_request *req = ahash_request_cast(req_async);

	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);



	if (unlikely(err == -EINPROGRESS))

		goto out;



	err = shash_ahash_finup(req, &rctx->desc);



	req->base.complete = rctx->complete;



out:

	local_bh_disable();

	rctx->complete(&req->base, err);

	local_bh_enable();

}



static int cryptd_hash_finup_enqueue(struct ahash_request *req)

{

	return cryptd_hash_enqueue(req, cryptd_hash_finup);

}



static void cryptd_hash_digest(struct crypto_async_request *req_async, int err)

{

	struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
@@ -507,6 +530,20 @@ static int cryptd_hash_digest_enqueue(struct ahash_request *req) 
	return cryptd_hash_enqueue(req, cryptd_hash_digest);

}



static int cryptd_hash_export(struct ahash_request *req, void *out)

{

	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);



	return crypto_shash_export(&rctx->desc, out);

}



static int cryptd_hash_import(struct ahash_request *req, const void *in)

{

	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);



	return crypto_shash_import(&rctx->desc, in);

}



static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,

			      struct cryptd_queue *queue)

{
@@ -546,6 +583,9 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, 
	inst->alg.init   = cryptd_hash_init_enqueue;

	inst->alg.update = cryptd_hash_update_enqueue;

	inst->alg.final  = cryptd_hash_final_enqueue;

	inst->alg.finup  = cryptd_hash_finup_enqueue;

	inst->alg.export = cryptd_hash_export;

	inst->alg.import = cryptd_hash_import;

	inst->alg.setkey = cryptd_hash_setkey;

	inst->alg.digest = cryptd_hash_digest_enqueue;