604973f1fe
The sha_{update|final} functions are similar for every sha variant.
Since that is error-prone and redundant replace these functions by
a shared generic implementation for s390.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/*
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* Cryptographic API.
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*
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* s390 implementation of the SHA256 Secure Hash Algorithm.
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*
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* s390 Version:
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* Copyright IBM Corp. 2005,2007
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* Author(s): Jan Glauber (jang@de.ibm.com)
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*
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* Derived from "crypto/sha256_generic.c"
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* and "arch/s390/crypto/sha1_s390.c"
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/crypto.h>
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#include <crypto/sha.h>
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#include "crypt_s390.h"
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#include "sha.h"
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static void sha256_init(struct crypto_tfm *tfm)
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{
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struct s390_sha_ctx *sctx = crypto_tfm_ctx(tfm);
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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 = KIMD_SHA_256;
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}
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static struct crypto_alg alg = {
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.cra_name = "sha256",
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.cra_driver_name = "sha256-s390",
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.cra_priority = CRYPT_S390_PRIORITY,
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.cra_flags = CRYPTO_ALG_TYPE_DIGEST,
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.cra_blocksize = SHA256_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct s390_sha_ctx),
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(alg.cra_list),
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.cra_u = { .digest = {
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.dia_digestsize = SHA256_DIGEST_SIZE,
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.dia_init = sha256_init,
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.dia_update = s390_sha_update,
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.dia_final = s390_sha_final } }
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};
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static int sha256_s390_init(void)
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{
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if (!crypt_s390_func_available(KIMD_SHA_256))
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return -EOPNOTSUPP;
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return crypto_register_alg(&alg);
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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_alg(&alg);
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}
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module_init(sha256_s390_init);
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module_exit(sha256_s390_fini);
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MODULE_ALIAS("sha256");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm");
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