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[CRYPTO] sha384: Hardware acceleration for s390 

Exploit the System z10 hardware acceleration for SHA384.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jan Glauber 2008-03-06 19:53:50 +08:00 committed by Herbert Xu
parent 291dc7c099
commit 4e2c6d7f4d
2 changed files with 54 additions and 9 deletions
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57
arch/s390/crypto/sha512_s390.c
View File

@ -1,7 +1,7 @@
/*
* Cryptographic API.
*
* s390 implementation of the SHA512 Secure Hash Algorithm.
* s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm.
*
* Copyright IBM Corp. 2007
* Author(s): Jan Glauber (jang@de.ibm.com)
@ -35,7 +35,7 @@ static void sha512_init(struct crypto_tfm *tfm)
ctx->func = KIMD_SHA_512;
}
static struct crypto_alg alg = {
static struct crypto_alg sha512_alg = {
.cra_name = "sha512",
.cra_driver_name = "sha512-s390",
.cra_priority = CRYPT_S390_PRIORITY,
@ -43,7 +43,7 @@ static struct crypto_alg alg = {
.cra_blocksize = SHA512_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct s390_sha_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(alg.cra_list),
.cra_list = LIST_HEAD_INIT(sha512_alg.cra_list),
.cra_u = { .digest = {
.dia_digestsize = SHA512_DIGEST_SIZE,
.dia_init = sha512_init,
@ -51,21 +51,64 @@ static struct crypto_alg alg = {
.dia_final = s390_sha_final } }
};
MODULE_ALIAS("sha512");
static void sha384_init(struct crypto_tfm *tfm)
{
struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
*(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
*(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
*(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
*(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
*(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
*(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
*(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
*(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
ctx->count = 0;
ctx->func = KIMD_SHA_512;
}
static struct crypto_alg sha384_alg = {
.cra_name = "sha384",
.cra_driver_name = "sha384-s390",
.cra_priority = CRYPT_S390_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_DIGEST,
.cra_blocksize = SHA384_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct s390_sha_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(sha384_alg.cra_list),
.cra_u = { .digest = {
.dia_digestsize = SHA384_DIGEST_SIZE,
.dia_init = sha384_init,
.dia_update = s390_sha_update,
.dia_final = s390_sha_final } }
};
MODULE_ALIAS("sha384");
static int __init init(void)
{
int ret;
if (!crypt_s390_func_available(KIMD_SHA_512))
return -EOPNOTSUPP;
return crypto_register_alg(&alg);
if ((ret = crypto_register_alg(&sha512_alg)) < 0)
goto out;
if ((ret = crypto_register_alg(&sha384_alg)) < 0)
crypto_unregister_alg(&sha512_alg);
out:
return ret;
}
static void __exit fini(void)
{
crypto_unregister_alg(&alg);
crypto_unregister_alg(&sha512_alg);
crypto_unregister_alg(&sha384_alg);
}
module_init(init);
module_exit(fini);
MODULE_ALIAS("sha512");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA512 Secure Hash Algorithm");
MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");

6
drivers/crypto/Kconfig
View File

@ -102,7 +102,7 @@ config CRYPTO_SHA256_S390
security against collision attacks.
config CRYPTO_SHA512_S390
tristate "SHA512 digest algorithm"
tristate "SHA384 and SHA512 digest algorithm"
depends on S390
select CRYPTO_ALGAPI
help
@ -110,7 +110,9 @@ config CRYPTO_SHA512_S390
SHA512 secure hash standard.
This version of SHA implements a 512 bit hash with 256 bits of
security against collision attacks.
security against collision attacks. The code also includes SHA-384,
a 384 bit hash with 192 bits of security against collision attacks.
config CRYPTO_DES_S390
tristate "DES and Triple DES cipher algorithms"