diff options
| author | LABBE Corentin <clabbe.montjoie@gmail.com> | 2015-12-17 15:45:39 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-12-22 15:43:35 +0300 |
| commit | 0c4c78de0417ced1da92351a3013e631860ea576 (patch) | |
| tree | 1901728828a5891d3a8e1f5db23226682a9bb41d /include/crypto | |
| parent | 51d77dddfff4a554744bfa0e67cf571319635645 (diff) | |
| download | linux-0c4c78de0417ced1da92351a3013e631860ea576.tar.xz | |
crypto: hash - add zero length message hash for shax and md5
Some crypto drivers cannot process empty data message and return a
precalculated hash for md5/sha1/sha224/sha256.
This patch add thoses precalculated hash in include/crypto.
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/md5.h | 2 | ||||
| -rw-r--r-- | include/crypto/sha.h | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/include/crypto/md5.h b/include/crypto/md5.h index 146af825eedb..327deac963c0 100644 --- a/include/crypto/md5.h +++ b/include/crypto/md5.h @@ -13,6 +13,8 @@ #define MD5_H2 0x98badcfeUL #define MD5_H3 0x10325476UL +extern const u8 md5_zero_message_hash[MD5_DIGEST_SIZE]; + struct md5_state { u32 hash[MD5_HASH_WORDS]; u32 block[MD5_BLOCK_WORDS]; diff --git a/include/crypto/sha.h b/include/crypto/sha.h index dd7905a3c22e..c94d3eb1cefd 100644 --- a/include/crypto/sha.h +++ b/include/crypto/sha.h @@ -64,6 +64,12 @@ #define SHA512_H6 0x1f83d9abfb41bd6bULL #define SHA512_H7 0x5be0cd19137e2179ULL +extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE]; + +extern const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE]; + +extern const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE]; + struct sha1_state { u32 state[SHA1_DIGEST_SIZE / 4]; u64 count; |