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crypto: sha512_generic - add a sha384 0-length pre-computed hash

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This patch adds the sha384 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 14:13:49 +02:00 committed by Herbert Xu
parent 87eee125e7
commit 26f7120b86
2 changed files with 12 additions and 0 deletions
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10
crypto/sha512_generic.c
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@ -23,6 +23,16 @@
#include <asm/byteorder.h>
#include <asm/unaligned.h>
const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE] = {
0x38, 0xb0, 0x60, 0xa7, 0x51, 0xac, 0x96, 0x38,
0x4c, 0xd9, 0x32, 0x7e, 0xb1, 0xb1, 0xe3, 0x6a,
0x21, 0xfd, 0xb7, 0x11, 0x14, 0xbe, 0x07, 0x43,
0x4c, 0x0c, 0xc7, 0xbf, 0x63, 0xf6, 0xe1, 0xda,
0x27, 0x4e, 0xde, 0xbf, 0xe7, 0x6f, 0x65, 0xfb,
0xd5, 0x1a, 0xd2, 0xf1, 0x48, 0x98, 0xb9, 0x5b
};
EXPORT_SYMBOL_GPL(sha384_zero_message_hash);
const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE] = {
0xcf, 0x83, 0xe1, 0x35, 0x7e, 0xef, 0xb8, 0xbd,
0xf1, 0x54, 0x28, 0x50, 0xd6, 0x6d, 0x80, 0x07,

2
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 sha384_zero_message_hash[SHA384_DIGEST_SIZE];
extern const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE];
struct sha1_state {