aboutsummaryrefslogtreecommitdiff
path: root/include/crypto/sha.h
diff options
context:
space:
mode:
authorLABBE Corentin <clabbe.montjoie@gmail.com>2015-12-17 13:45:39 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2015-12-22 20:43:35 +0800
commit0c4c78de0417ced1da92351a3013e631860ea576 (patch)
tree1901728828a5891d3a8e1f5db23226682a9bb41d /include/crypto/sha.h
parent51d77dddfff4a554744bfa0e67cf571319635645 (diff)
downloadlinux-stericsson-0c4c78de0417ced1da92351a3013e631860ea576.tar.gz
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/sha.h')
-rw-r--r--include/crypto/sha.h6
1 files changed, 6 insertions, 0 deletions
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;