[PATCH 3.19.y-ckt 129/210] crypto: hash - Add crypto_ahash_has_setkey
From: Kamal Mostafa <hidden>
Date: 2016-01-29 01:49:01
Also in:
lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
3.19.8-ckt14 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Herbert Xu <herbert@gondor.apana.org.au> commit a5596d6332787fd383b3b5427b41f94254430827 upstream. This patch adds a way for ahash users to determine whether a key is required by a crypto_ahash transform. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Kamal Mostafa <redacted> --- crypto/ahash.c | 5 ++++- crypto/shash.c | 4 +++- include/crypto/hash.h | 6 ++++++ 3 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/crypto/ahash.c b/crypto/ahash.c
index c1d8591..51d48cd 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c@@ -450,6 +450,7 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm) struct ahash_alg *alg = crypto_ahash_alg(hash); hash->setkey = ahash_nosetkey; + hash->has_setkey = false; hash->export = ahash_no_export; hash->import = ahash_no_import;
@@ -462,8 +463,10 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm) hash->finup = alg->finup ?: ahash_def_finup; hash->digest = alg->digest; - if (alg->setkey) + if (alg->setkey) { hash->setkey = alg->setkey; + hash->has_setkey = true; + } if (alg->export) hash->export = alg->export; if (alg->import)
diff --git a/crypto/shash.c b/crypto/shash.c
index 47c7139..aa3e5050 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c@@ -355,8 +355,10 @@ int crypto_init_shash_ops_async(struct crypto_tfm *tfm) crt->finup = shash_async_finup; crt->digest = shash_async_digest; - if (alg->setkey) + if (alg->setkey) { crt->setkey = shash_async_setkey; + crt->has_setkey = true; + } if (alg->export) crt->export = shash_async_export; if (alg->import)
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 98abda9..bbc59bd 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h@@ -199,6 +199,7 @@ struct crypto_ahash { unsigned int keylen); unsigned int reqsize; + bool has_setkey; struct crypto_tfm base; };
@@ -356,6 +357,11 @@ static inline void *ahash_request_ctx(struct ahash_request *req) int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen); +static inline bool crypto_ahash_has_setkey(struct crypto_ahash *tfm) +{ + return tfm->has_setkey; +} + /** * crypto_ahash_finup() - update and finalize message digest * @req: reference to the ahash_request handle that holds all information
--
1.9.1