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authorHerbert Xu <herbert@gondor.apana.org.au>2007-11-15 22:36:07 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2008-01-11 08:16:15 +1100
commit332f8840f7095d294f9bb066b175a100bcde214c (patch)
treefa2e610da8e943765dfdb8f23817027424a1339d /include/linux/crypto.h
parent86f578de5ba6ea11ead9284d9f036fee01ba5893 (diff)
downloadop-kernel-dev-332f8840f7095d294f9bb066b175a100bcde214c.zip
op-kernel-dev-332f8840f7095d294f9bb066b175a100bcde214c.tar.gz
[CRYPTO] ablkcipher: Add distinct ABLKCIPHER type
Up until now we have ablkcipher algorithms have been identified as type BLKCIPHER with the ASYNC bit set. This is suboptimal because ablkcipher refers to two things. On the one hand it refers to the top-level ablkcipher interface with requests. On the other hand it refers to and algorithm type underneath. As it is you cannot request a synchronous block cipher algorithm with the ablkcipher interface on top. This is a problem because we want to be able to eventually phase out the blkcipher top-level interface. This patch fixes this by making ABLKCIPHER its own type, just as we have distinct types for HASH and DIGEST. The type it associated with the algorithm implementation only. Which top-level interface is used for synchronous block ciphers is then determined by the mask that's used. If it's a specific mask then the old blkcipher interface is given, otherwise we go with the new ablkcipher interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/linux/crypto.h')
-rw-r--r--include/linux/crypto.h18
1 files changed, 10 insertions, 8 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index f3110eb..f56ae87 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -33,10 +33,12 @@
#define CRYPTO_ALG_TYPE_DIGEST 0x00000002
#define CRYPTO_ALG_TYPE_HASH 0x00000003
#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
-#define CRYPTO_ALG_TYPE_COMPRESS 0x00000005
-#define CRYPTO_ALG_TYPE_AEAD 0x00000006
+#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
+#define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
+#define CRYPTO_ALG_TYPE_AEAD 0x00000009
#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
+#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
#define CRYPTO_ALG_LARVAL 0x00000010
#define CRYPTO_ALG_DEAD 0x00000020
@@ -530,7 +532,7 @@ static inline struct crypto_ablkcipher *crypto_alloc_ablkcipher(
{
type &= ~CRYPTO_ALG_TYPE_MASK;
type |= CRYPTO_ALG_TYPE_BLKCIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK;
+ mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
return __crypto_ablkcipher_cast(
crypto_alloc_base(alg_name, type, mask));
@@ -552,7 +554,7 @@ static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
{
type &= ~CRYPTO_ALG_TYPE_MASK;
type |= CRYPTO_ALG_TYPE_BLKCIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK;
+ mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
return crypto_has_alg(alg_name, type, mask);
}
@@ -841,9 +843,9 @@ static inline struct crypto_blkcipher *crypto_blkcipher_cast(
static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
const char *alg_name, u32 type, u32 mask)
{
- type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
+ type &= ~CRYPTO_ALG_TYPE_MASK;
type |= CRYPTO_ALG_TYPE_BLKCIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC;
+ mask |= CRYPTO_ALG_TYPE_MASK;
return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
}
@@ -861,9 +863,9 @@ static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
{
- type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
+ type &= ~CRYPTO_ALG_TYPE_MASK;
type |= CRYPTO_ALG_TYPE_BLKCIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC;
+ mask |= CRYPTO_ALG_TYPE_MASK;
return crypto_has_alg(alg_name, type, mask);
}
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