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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-12-01 11:47:07 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-01-10 22:16:39 +0100 |
| commit | 551a09a7a954f720067f207657bbbd26a3fe156a (patch) | |
| tree | 083daf83f8f7e67e7541f53bd888a2238ffe8b88 | |
| parent | [CRYPTO] authenc: Select HASH in Kconfig (diff) | |
| download | linux-551a09a7a954f720067f207657bbbd26a3fe156a.tar.xz linux-551a09a7a954f720067f207657bbbd26a3fe156a.zip | |
[CRYPTO] api: Sanitise mask when allocating ablkcipher/hash
When allocating ablkcipher/hash objects, we use a mask that's wider than
the usual type mask. This patch sanitises the mask supplied by the user
so we don't end up using a narrower mask which may lead to unintended
results.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | include/linux/crypto.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 48aa5959abbb..ef7642ed3e42 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -532,6 +532,7 @@ static inline struct crypto_ablkcipher *crypto_alloc_ablkcipher( const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; + mask &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_BLKCIPHER; mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK; @@ -554,6 +555,7 @@ static inline int crypto_has_ablkcipher(const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; + mask &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_BLKCIPHER; mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK; @@ -1086,6 +1088,7 @@ static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; + mask &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_HASH; mask |= CRYPTO_ALG_TYPE_HASH_MASK; @@ -1105,6 +1108,7 @@ static inline void crypto_free_hash(struct crypto_hash *tfm) static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; + mask &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_HASH; mask |= CRYPTO_ALG_TYPE_HASH_MASK; |