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author | LABBE Corentin <clabbe.montjoie@gmail.com> | 2015-12-17 13:45:39 +0100 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-12-22 20:43:35 +0800 |
commit | afd2d69869c095d5790bf25b259782f6f5377b94 (patch) | |
tree | 8596f52c886e8341f89b84a6649e8bacb90547a9 /crypto/sha1_generic.c | |
parent | 82a00f55e7a23f92c870a44f477c7aa3c35c16d5 (diff) | |
download | linux-crypto-afd2d69869c095d5790bf25b259782f6f5377b94.tar.gz linux-crypto-afd2d69869c095d5790bf25b259782f6f5377b94.zip |
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 '')
-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 39e3acc4..6877cbb9 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) { |