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authorHerbert Xu <herbert@gondor.apana.org.au>2008-08-31 15:47:27 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2008-12-25 11:01:26 +1100
commit7b5a080b3c46f0cac71c0d0262634c6517d4ee4f (patch)
tree41ba9e7051d1ecd47eb5cd371209229db3202ab6 /include/linux
parent7b0bac64cd5b74d6f1147524c26216de13a501fd (diff)
crypto: hash - Add shash interface
The shash interface replaces the current synchronous hash interface. It improves over hash in two ways. Firstly shash is reentrant, meaning that the same tfm may be used by two threads simultaneously as all hashing state is stored in a local descriptor. The other enhancement is that shash no longer takes scatter list entries. This is because shash is specifically designed for synchronous algorithms and as such scatter lists are unnecessary. All existing hash users will be converted to shash once the algorithms have been completely converted. There is also a new finup function that combines update with final. This will be extended to ahash once the algorithm conversion is done. This is also the first time that an algorithm type has their own registration function. Existing algorithm types will be converted to this way in due course. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/crypto.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index ffaaa418cf5..ee95c748695 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -39,6 +39,7 @@
#define CRYPTO_ALG_TYPE_HASH 0x00000009
#define CRYPTO_ALG_TYPE_AHASH 0x0000000a
#define CRYPTO_ALG_TYPE_RNG 0x0000000c
+#define CRYPTO_ALG_TYPE_SHASH 0x0000000d
#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c