lkml.org 
[lkml]   [2016]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Date
Subject[PATCH 3.2 72/87] crypto: hash - Add crypto_ahash_has_setkey
3.2.77-rc1 review patch.  If anyone has any objections, please let me know.

------------------

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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
crypto/ahash.c | 5 ++++-
crypto/shash.c | 4 +++-
include/crypto/hash.h | 6 ++++++
3 files changed, 13 insertions(+), 2 deletions(-)

--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -369,6 +369,7 @@ static int crypto_ahash_init_tfm(struct
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;

@@ -381,8 +382,10 @@ static int crypto_ahash_init_tfm(struct
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)
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -354,8 +354,10 @@ int crypto_init_shash_ops_async(struct c
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)
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -94,6 +94,7 @@ struct crypto_ahash {
unsigned int keylen);

unsigned int reqsize;
+ bool has_setkey;
struct crypto_tfm base;
};

@@ -181,6 +182,11 @@ static inline void *ahash_request_ctx(st

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;
+}
+
int crypto_ahash_finup(struct ahash_request *req);
int crypto_ahash_final(struct ahash_request *req);
int crypto_ahash_digest(struct ahash_request *req);
\
 
 \ /
  Last update: 2016-02-09 01:41    [W:0.291 / U:26.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site