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Commit 4e2c6d7f authored by Jan Glauber's avatar Jan Glauber Committed by Herbert Xu
Browse files

[CRYPTO] sha384: Hardware acceleration for s390 



Exploit the System z10 hardware acceleration for SHA384.

Signed-off-by: default avatarJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 291dc7c0

arch/s390/crypto/sha512_s390.c

+50 −7
Original line number Diff line number Diff line 
/*

 * 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");

drivers/crypto/Kconfig

+4 −2
Original line number Diff line number Diff line
@@ -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"