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crypto: n2 - Use precalculated hash from headers

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Precalculated hash for empty message are now present in hash headers.
This patch just use them.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
LABBE Corentin 2015-12-17 13:45:40 +01:00 committed by Herbert Xu
parent 0c4c78de04
commit 8054b8005b
2 changed files with 9 additions and 27 deletions
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3
drivers/crypto/Kconfig
View file

@ -194,6 +194,9 @@ config CRYPTO_DEV_NIAGARA2
select CRYPTO_DES
select CRYPTO_BLKCIPHER
select CRYPTO_HASH
select CRYPTO_MD5
select CRYPTO_SHA1
select CRYPTO_SHA256
depends on SPARC64
help
Each core of a Niagara2 processor contains a Stream

33
drivers/crypto/n2_core.c
View file

@ -241,7 +241,7 @@ static inline bool n2_should_run_async(struct spu_queue *qp, int this_len)
struct n2_ahash_alg {
struct list_head entry;
const char *hash_zero;
const u8 *hash_zero;
const u32 *hash_init;
u8 hw_op_hashsz;
u8 digest_size;
@ -1267,7 +1267,7 @@ static LIST_HEAD(cipher_algs);
struct n2_hash_tmpl {
const char *name;
const char *hash_zero;
const u8 *hash_zero;
const u32 *hash_init;
u8 hw_op_hashsz;
u8 digest_size;
@ -1276,40 +1276,19 @@ struct n2_hash_tmpl {
u8 hmac_type;
};
static const char md5_zero[MD5_DIGEST_SIZE] = {
0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e,
};
static const u32 md5_init[MD5_HASH_WORDS] = {
cpu_to_le32(MD5_H0),
cpu_to_le32(MD5_H1),
cpu_to_le32(MD5_H2),
cpu_to_le32(MD5_H3),
};
static const char sha1_zero[SHA1_DIGEST_SIZE] = {
0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32,
0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8,
0x07, 0x09
};
static const u32 sha1_init[SHA1_DIGEST_SIZE / 4] = {
SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4,
};
static const char sha256_zero[SHA256_DIGEST_SIZE] = {
0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a,
0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae,
0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99,
0x1b, 0x78, 0x52, 0xb8, 0x55
};
static const u32 sha256_init[SHA256_DIGEST_SIZE / 4] = {
SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3,
SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7,
};
static const char sha224_zero[SHA224_DIGEST_SIZE] = {
0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2,
0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4,
0x2f
};
static const u32 sha224_init[SHA256_DIGEST_SIZE / 4] = {
SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3,
SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7,
@ -1317,7 +1296,7 @@ static const u32 sha224_init[SHA256_DIGEST_SIZE / 4] = {
static const struct n2_hash_tmpl hash_tmpls[] = {
{ .name = "md5",
.hash_zero = md5_zero,
.hash_zero = md5_zero_message_hash,
.hash_init = md5_init,
.auth_type = AUTH_TYPE_MD5,
.hmac_type = AUTH_TYPE_HMAC_MD5,
@ -1325,7 +1304,7 @@ static const struct n2_hash_tmpl hash_tmpls[] = {
.digest_size = MD5_DIGEST_SIZE,
.block_size = MD5_HMAC_BLOCK_SIZE },
{ .name = "sha1",
.hash_zero = sha1_zero,
.hash_zero = sha1_zero_message_hash,
.hash_init = sha1_init,
.auth_type = AUTH_TYPE_SHA1,
.hmac_type = AUTH_TYPE_HMAC_SHA1,
@ -1333,7 +1312,7 @@ static const struct n2_hash_tmpl hash_tmpls[] = {
.digest_size = SHA1_DIGEST_SIZE,
.block_size = SHA1_BLOCK_SIZE },
{ .name = "sha256",
.hash_zero = sha256_zero,
.hash_zero = sha256_zero_message_hash,
.hash_init = sha256_init,
.auth_type = AUTH_TYPE_SHA256,
.hmac_type = AUTH_TYPE_HMAC_SHA256,
@ -1341,7 +1320,7 @@ static const struct n2_hash_tmpl hash_tmpls[] = {
.digest_size = SHA256_DIGEST_SIZE,
.block_size = SHA256_BLOCK_SIZE },
{ .name = "sha224",
.hash_zero = sha224_zero,
.hash_zero = sha224_zero_message_hash,
.hash_init = sha224_init,
.auth_type = AUTH_TYPE_SHA256,
.hmac_type = AUTH_TYPE_RESERVED,