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crypto: sha512_generic - add a sha512 0-length pre-computed hash

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This patch adds the sha512 pre-computed 0-length hash so that device
drivers can use it when an hardware engine does not support computing a
hash from a 0 length input.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Antoine Tenart
2018-05-29 14:13:45 +02:00
committed by Herbert Xu
parent 25bc955103
commit 30c217ef64
2 changed files with 14 additions and 0 deletions
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include/crypto/sha.h
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@@ -71,6 +71,8 @@ extern const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE];
extern const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE];
extern const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE];
struct sha1_state {
u32 state[SHA1_DIGEST_SIZE / 4];
u64 count;