[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / s390 / crypto / sha512_s390.c

/*
 * Cryptographic API.
 *
 * s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm.
 *
 * Copyright IBM Corp. 2007
 * Author(s): Jan Glauber (jang@de.ibm.com)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 */
#include <crypto/internal/hash.h>
#include <crypto/sha.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>

#include "sha.h"
#include "crypt_s390.h"

static int sha512_init(struct shash_desc *desc)
{
	struct s390_sha_ctx *ctx = shash_desc_ctx(desc);

	*(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL;
	*(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL;
	*(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL;
	*(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL;
	*(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL;
	*(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL;
	*(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL;
	*(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL;
	ctx->count = 0;
	ctx->func = KIMD_SHA_512;

	return 0;
}

static int sha512_export(struct shash_desc *desc, void *out)
{
	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
	struct sha512_state *octx = out;

	octx->count[0] = sctx->count;
	octx->count[1] = 0;
	memcpy(octx->state, sctx->state, sizeof(octx->state));
	memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
	return 0;
}

static int sha512_import(struct shash_desc *desc, const void *in)
{
	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
	const struct sha512_state *ictx = in;

	if (unlikely(ictx->count[1]))
		return -ERANGE;
	sctx->count = ictx->count[0];

	memcpy(sctx->state, ictx->state, sizeof(ictx->state));
	memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
	sctx->func = KIMD_SHA_512;
	return 0;
}

static struct shash_alg sha512_alg = {
	.digestsize	=	SHA512_DIGEST_SIZE,
	.init		=	sha512_init,
	.update		=	s390_sha_update,
	.final		=	s390_sha_final,
	.export		=	sha512_export,
	.import		=	sha512_import,
	.descsize	=	sizeof(struct s390_sha_ctx),
	.statesize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha512",
		.cra_driver_name=	"sha512-s390",
		.cra_priority	=	CRYPT_S390_PRIORITY,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA512_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
};

MODULE_ALIAS("sha512");

static int sha384_init(struct shash_desc *desc)
{
	struct s390_sha_ctx *ctx = shash_desc_ctx(desc);

	*(__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;

	return 0;
}

static struct shash_alg sha384_alg = {
	.digestsize	=	SHA384_DIGEST_SIZE,
	.init		=	sha384_init,
	.update		=	s390_sha_update,
	.final		=	s390_sha_final,
	.export		=	sha512_export,
	.import		=	sha512_import,
	.descsize	=	sizeof(struct s390_sha_ctx),
	.statesize	=	sizeof(struct sha512_state),
	.base		=	{
		.cra_name	=	"sha384",
		.cra_driver_name=	"sha384-s390",
		.cra_priority	=	CRYPT_S390_PRIORITY,
		.cra_flags	=	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	=	SHA384_BLOCK_SIZE,
		.cra_ctxsize	=	sizeof(struct s390_sha_ctx),
		.cra_module	=	THIS_MODULE,
	}
};

MODULE_ALIAS("sha384");

static int __init init(void)
{
	int ret;

	if (!crypt_s390_func_available(KIMD_SHA_512, CRYPT_S390_MSA))
		return -EOPNOTSUPP;
	if ((ret = crypto_register_shash(&sha512_alg)) < 0)
		goto out;
	if ((ret = crypto_register_shash(&sha384_alg)) < 0)
		crypto_unregister_shash(&sha512_alg);
out:
	return ret;
}

static void __exit fini(void)
{
	crypto_unregister_shash(&sha512_alg);
	crypto_unregister_shash(&sha384_alg);
}

module_init(init);
module_exit(fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");
Commit	Line	Data
291dc7c0 JG	1	/*
	2	* Cryptographic API.
	3	*
4e2c6d7f	4	* s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm.
291dc7c0 JG	5	*
	6	* Copyright IBM Corp. 2007
	7	* Author(s): Jan Glauber (jang@de.ibm.com)
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the Free
	11	* Software Foundation; either version 2 of the License, or (at your option)
	12	* any later version.
	13	*
	14	*/
563f346d	15	#include <crypto/internal/hash.h>
9fadfd1a HX	16	#include <crypto/sha.h>
9fadfd1a HX	17	#include <linux/errno.h>
291dc7c0	18	#include <linux/init.h>
9fadfd1a	19	#include <linux/kernel.h>
291dc7c0	20	#include <linux/module.h>
291dc7c0 JG	21
	22	#include "sha.h"
	23	#include "crypt_s390.h"
	24
563f346d	25	static int sha512_init(struct shash_desc *desc)
291dc7c0	26	{
563f346d	27	struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
291dc7c0 JG	28
	29	(__u64 )&ctx->state[0] = 0x6a09e667f3bcc908ULL;
	30	(__u64 )&ctx->state[2] = 0xbb67ae8584caa73bULL;
	31	(__u64 )&ctx->state[4] = 0x3c6ef372fe94f82bULL;
	32	(__u64 )&ctx->state[6] = 0xa54ff53a5f1d36f1ULL;
	33	(__u64 )&ctx->state[8] = 0x510e527fade682d1ULL;
	34	(__u64 )&ctx->state[10] = 0x9b05688c2b3e6c1fULL;
	35	(__u64 )&ctx->state[12] = 0x1f83d9abfb41bd6bULL;
	36	(__u64 )&ctx->state[14] = 0x5be0cd19137e2179ULL;
	37	ctx->count = 0;
	38	ctx->func = KIMD_SHA_512;
563f346d HX	39
563f346d HX	40	return 0;
291dc7c0 JG	41	}
291dc7c0 JG	42
9fadfd1a HX	43	static int sha512_export(struct shash_desc desc, void out)
	44	{
	45	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
	46	struct sha512_state *octx = out;
	47
	48	octx->count[0] = sctx->count;
	49	octx->count[1] = 0;
	50	memcpy(octx->state, sctx->state, sizeof(octx->state));
	51	memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
	52	return 0;
	53	}
	54
81bd5f6c	55	static int sha512_import(struct shash_desc desc, const void in)
9fadfd1a HX	56	{
9fadfd1a HX	57	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
81bd5f6c	58	const struct sha512_state *ictx = in;
9fadfd1a HX	59
	60	if (unlikely(ictx->count[1]))
	61	return -ERANGE;
	62	sctx->count = ictx->count[0];
	63
	64	memcpy(sctx->state, ictx->state, sizeof(ictx->state));
	65	memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
	66	sctx->func = KIMD_SHA_512;
	67	return 0;
	68	}
	69
563f346d HX	70	static struct shash_alg sha512_alg = {
	71	.digestsize = SHA512_DIGEST_SIZE,
	72	.init = sha512_init,
	73	.update = s390_sha_update,
	74	.final = s390_sha_final,
9fadfd1a HX	75	.export = sha512_export,
9fadfd1a HX	76	.import = sha512_import,
563f346d	77	.descsize = sizeof(struct s390_sha_ctx),
9fadfd1a	78	.statesize = sizeof(struct sha512_state),
563f346d HX	79	.base = {
	80	.cra_name = "sha512",
	81	.cra_driver_name= "sha512-s390",
	82	.cra_priority = CRYPT_S390_PRIORITY,
	83	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	84	.cra_blocksize = SHA512_BLOCK_SIZE,
	85	.cra_module = THIS_MODULE,
	86	}
291dc7c0 JG	87	};
291dc7c0 JG	88
4e2c6d7f JG	89	MODULE_ALIAS("sha512");
4e2c6d7f JG	90
563f346d	91	static int sha384_init(struct shash_desc *desc)
4e2c6d7f	92	{
563f346d	93	struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
4e2c6d7f JG	94
	95	(__u64 )&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
	96	(__u64 )&ctx->state[2] = 0x629a292a367cd507ULL;
	97	(__u64 )&ctx->state[4] = 0x9159015a3070dd17ULL;
	98	(__u64 )&ctx->state[6] = 0x152fecd8f70e5939ULL;
	99	(__u64 )&ctx->state[8] = 0x67332667ffc00b31ULL;
	100	(__u64 )&ctx->state[10] = 0x8eb44a8768581511ULL;
	101	(__u64 )&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
	102	(__u64 )&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
	103	ctx->count = 0;
	104	ctx->func = KIMD_SHA_512;
563f346d HX	105
563f346d HX	106	return 0;
4e2c6d7f JG	107	}
4e2c6d7f JG	108
563f346d HX	109	static struct shash_alg sha384_alg = {
	110	.digestsize = SHA384_DIGEST_SIZE,
	111	.init = sha384_init,
	112	.update = s390_sha_update,
	113	.final = s390_sha_final,
9fadfd1a HX	114	.export = sha512_export,
9fadfd1a HX	115	.import = sha512_import,
563f346d	116	.descsize = sizeof(struct s390_sha_ctx),
9fadfd1a	117	.statesize = sizeof(struct sha512_state),
563f346d HX	118	.base = {
	119	.cra_name = "sha384",
	120	.cra_driver_name= "sha384-s390",
	121	.cra_priority = CRYPT_S390_PRIORITY,
	122	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
949abe57	123	.cra_blocksize = SHA384_BLOCK_SIZE,
563f346d HX	124	.cra_ctxsize = sizeof(struct s390_sha_ctx),
	125	.cra_module = THIS_MODULE,
	126	}
4e2c6d7f JG	127	};
	128
	129	MODULE_ALIAS("sha384");
	130
291dc7c0 JG	131	static int __init init(void)
291dc7c0 JG	132	{
4e2c6d7f JG	133	int ret;
4e2c6d7f JG	134
1822bc90	135	if (!crypt_s390_func_available(KIMD_SHA_512, CRYPT_S390_MSA))
291dc7c0	136	return -EOPNOTSUPP;
563f346d	137	if ((ret = crypto_register_shash(&sha512_alg)) < 0)
4e2c6d7f	138	goto out;
563f346d HX	139	if ((ret = crypto_register_shash(&sha384_alg)) < 0)
563f346d HX	140	crypto_unregister_shash(&sha512_alg);
4e2c6d7f JG	141	out:
4e2c6d7f JG	142	return ret;
291dc7c0 JG	143	}
	144
	145	static void __exit fini(void)
	146	{
563f346d HX	147	crypto_unregister_shash(&sha512_alg);
563f346d HX	148	crypto_unregister_shash(&sha384_alg);
291dc7c0 JG	149	}
	150
	151	module_init(init);
	152	module_exit(fini);
	153
291dc7c0	154	MODULE_LICENSE("GPL");
4e2c6d7f	155	MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");