diff options
| author | LABBE Corentin <clabbe.montjoie@gmail.com> | 2015-12-17 13:45:42 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-12-22 20:43:40 +0800 |
| commit | e4ae86e22edc1647f0ee0c2ab12ec05fce17d782 (patch) | |
| tree | adbad6ff81b7690bd7e6ed58538b334c0f1721ab | |
| parent | bdd75064d2b2068007f4fc5e26ac726e8617a090 (diff) | |
crypto: ux500 - Use precalculated hash from headers
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>
| -rw-r--r-- | drivers/crypto/ux500/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/crypto/ux500/hash/hash_core.c | 20 |
2 files changed, 4 insertions, 18 deletions
diff --git a/drivers/crypto/ux500/Kconfig b/drivers/crypto/ux500/Kconfig index 30796441b0a6..0e338bf6dfb7 100644 --- a/drivers/crypto/ux500/Kconfig +++ b/drivers/crypto/ux500/Kconfig @@ -18,6 +18,8 @@ config CRYPTO_DEV_UX500_HASH tristate "UX500 crypto driver for HASH block" depends on CRYPTO_DEV_UX500 select CRYPTO_HASH + select CRYPTO_SHA1 + select CRYPTO_SHA256 help This selects the hash driver for the UX500_HASH hardware. Depends on UX500/STM DMA if running in DMA mode. diff --git a/drivers/crypto/ux500/hash/hash_core.c b/drivers/crypto/ux500/hash/hash_core.c index f47d112041b2..d6fdc583ce5d 100644 --- a/drivers/crypto/ux500/hash/hash_core.c +++ b/drivers/crypto/ux500/hash/hash_core.c @@ -41,22 +41,6 @@ static int hash_mode; module_param(hash_mode, int, 0); MODULE_PARM_DESC(hash_mode, "CPU or DMA mode. CPU = 0 (default), DMA = 1"); -/** - * Pre-calculated empty message digests. - */ -static const u8 zero_message_hash_sha1[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 u8 zero_message_hash_sha256[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 -}; - /* HMAC-SHA1, no key */ static const u8 zero_message_hmac_sha1[SHA1_DIGEST_SIZE] = { 0xfb, 0xdb, 0x1d, 0x1b, 0x18, 0xaa, 0x6c, 0x08, @@ -242,13 +226,13 @@ static int get_empty_message_digest( if (HASH_OPER_MODE_HASH == ctx->config.oper_mode) { if (HASH_ALGO_SHA1 == ctx->config.algorithm) { - memcpy(zero_hash, &zero_message_hash_sha1[0], + memcpy(zero_hash, &sha1_zero_message_hash[0], SHA1_DIGEST_SIZE); *zero_hash_size = SHA1_DIGEST_SIZE; *zero_digest = true; } else if (HASH_ALGO_SHA256 == ctx->config.algorithm) { - memcpy(zero_hash, &zero_message_hash_sha256[0], + memcpy(zero_hash, &sha256_zero_message_hash[0], SHA256_DIGEST_SIZE); *zero_hash_size = SHA256_DIGEST_SIZE; *zero_digest = true; |