a876ca4dde
Now that the SPDX tag is in all arch/s390/crypto/ files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
146 lines
3.4 KiB
C
146 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Cryptographic API.
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*
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* s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
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*
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* s390 Version:
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* Copyright IBM Corp. 2005, 2011
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* Author(s): Jan Glauber (jang@de.ibm.com)
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*/
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#include <crypto/internal/hash.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/cpufeature.h>
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#include <crypto/sha.h>
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#include <asm/cpacf.h>
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#include "sha.h"
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static int sha256_init(struct shash_desc *desc)
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{
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struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
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sctx->state[0] = SHA256_H0;
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sctx->state[1] = SHA256_H1;
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sctx->state[2] = SHA256_H2;
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sctx->state[3] = SHA256_H3;
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sctx->state[4] = SHA256_H4;
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sctx->state[5] = SHA256_H5;
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sctx->state[6] = SHA256_H6;
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sctx->state[7] = SHA256_H7;
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sctx->count = 0;
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sctx->func = CPACF_KIMD_SHA_256;
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return 0;
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}
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static int sha256_export(struct shash_desc *desc, void *out)
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{
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struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
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struct sha256_state *octx = out;
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octx->count = sctx->count;
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memcpy(octx->state, sctx->state, sizeof(octx->state));
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memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
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return 0;
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}
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static int sha256_import(struct shash_desc *desc, const void *in)
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{
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struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
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const struct sha256_state *ictx = in;
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sctx->count = ictx->count;
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memcpy(sctx->state, ictx->state, sizeof(ictx->state));
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memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
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sctx->func = CPACF_KIMD_SHA_256;
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return 0;
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}
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static struct shash_alg sha256_alg = {
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.digestsize = SHA256_DIGEST_SIZE,
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.init = sha256_init,
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.update = s390_sha_update,
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.final = s390_sha_final,
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.export = sha256_export,
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.import = sha256_import,
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.descsize = sizeof(struct s390_sha_ctx),
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.statesize = sizeof(struct sha256_state),
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.base = {
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.cra_name = "sha256",
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.cra_driver_name= "sha256-s390",
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.cra_priority = 300,
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.cra_flags = CRYPTO_ALG_TYPE_SHASH,
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.cra_blocksize = SHA256_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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};
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static int sha224_init(struct shash_desc *desc)
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{
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struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
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sctx->state[0] = SHA224_H0;
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sctx->state[1] = SHA224_H1;
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sctx->state[2] = SHA224_H2;
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sctx->state[3] = SHA224_H3;
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sctx->state[4] = SHA224_H4;
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sctx->state[5] = SHA224_H5;
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sctx->state[6] = SHA224_H6;
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sctx->state[7] = SHA224_H7;
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sctx->count = 0;
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sctx->func = CPACF_KIMD_SHA_256;
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return 0;
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}
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static struct shash_alg sha224_alg = {
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.digestsize = SHA224_DIGEST_SIZE,
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.init = sha224_init,
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.update = s390_sha_update,
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.final = s390_sha_final,
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.export = sha256_export,
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.import = sha256_import,
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.descsize = sizeof(struct s390_sha_ctx),
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.statesize = sizeof(struct sha256_state),
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.base = {
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.cra_name = "sha224",
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.cra_driver_name= "sha224-s390",
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.cra_priority = 300,
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.cra_flags = CRYPTO_ALG_TYPE_SHASH,
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.cra_blocksize = SHA224_BLOCK_SIZE,
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.cra_module = THIS_MODULE,
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}
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};
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static int __init sha256_s390_init(void)
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{
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int ret;
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if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_256))
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return -EOPNOTSUPP;
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ret = crypto_register_shash(&sha256_alg);
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if (ret < 0)
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goto out;
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ret = crypto_register_shash(&sha224_alg);
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if (ret < 0)
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crypto_unregister_shash(&sha256_alg);
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out:
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return ret;
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}
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static void __exit sha256_s390_fini(void)
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{
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crypto_unregister_shash(&sha224_alg);
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crypto_unregister_shash(&sha256_alg);
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}
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module_cpu_feature_match(MSA, sha256_s390_init);
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module_exit(sha256_s390_fini);
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MODULE_ALIAS_CRYPTO("sha256");
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MODULE_ALIAS_CRYPTO("sha224");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm");
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