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| 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 /crypto/sha1_generic.c | |
| 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 'crypto/sha1_generic.c')
| -rw-r--r-- | crypto/sha1_generic.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/crypto/sha1_generic.c b/crypto/sha1_generic.c index 39e3acc438d9..6877cbb9105f 100644 --- a/crypto/sha1_generic.c +++ b/crypto/sha1_generic.c @@ -26,6 +26,13 @@ #include <crypto/sha1_base.h> #include <asm/byteorder.h> +const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE] = { + 0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, + 0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, + 0xaf, 0xd8, 0x07, 0x09 +}; +EXPORT_SYMBOL_GPL(sha1_zero_message_hash); + static void sha1_generic_block_fn(struct sha1_state *sst, u8 const *src, int blocks) { |