[4.2.y-ckt stable] Patch "crypto: hash - Add crypto_ahash_has_setkey" has been added to the 4.2.y-ckt tree
Kamal Mostafa
kamal at canonical.com
Wed Jan 27 00:12:34 UTC 2016
This is a note to let you know that I have just added a patch titled
crypto: hash - Add crypto_ahash_has_setkey
to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue
This patch is scheduled to be released in version 4.2.8-ckt3.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
---8<------------------------------------------------------------
>From ada29b970848d3af2219e8cfa8b5146d8d28242d Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert at gondor.apana.org.au>
Date: Fri, 8 Jan 2016 21:28:26 +0800
Subject: crypto: hash - Add crypto_ahash_has_setkey
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 at gondor.apana.org.au>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
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 9c1dc8d..d19b523 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -451,6 +451,7 @@ 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;
@@ -463,8 +464,10 @@ 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 ecb1e3d..88a27de 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 57c8a6e..07c3a93 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
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