LXR linux/arch/s390/crypto/sha512

   1/*
   2 * Cryptographic API.
   3 *
   4 * s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm.
   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 */
  15#include <crypto/internal/hash.h>
  16#include <linux/init.h>
  17#include <linux/module.h>
  18
  19#include "sha.h"
  20#include "crypt_s390.h"
  21
  22static int sha512_init(struct shash_desc *desc)
  23{
  24        struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
  25
  26        *(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL;
  27        *(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL;
  28        *(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL;
  29        *(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL;
  30        *(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL;
  31        *(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL;
  32        *(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL;
  33        *(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL;
  34        ctx->count = 0;
  35        ctx->func = KIMD_SHA_512;
  36
  37        return 0;
  38}
  39
  40static struct shash_alg sha512_alg = {
  41        .digestsize     =       SHA512_DIGEST_SIZE,
  42        .init           =       sha512_init,
  43        .update         =       s390_sha_update,
  44        .final          =       s390_sha_final,
  45        .descsize       =       sizeof(struct s390_sha_ctx),
  46        .base           =       {
  47                .cra_name       =       "sha512",
  48                .cra_driver_name=       "sha512-s390",
  49                .cra_priority   =       CRYPT_S390_PRIORITY,
  50                .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
  51                .cra_blocksize  =       SHA512_BLOCK_SIZE,
  52                .cra_module     =       THIS_MODULE,
  53        }
  54};
  55
  56MODULE_ALIAS("sha512");
  57
  58static int sha384_init(struct shash_desc *desc)
  59{
  60        struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
  61
  62        *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
  63        *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
  64        *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
  65        *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
  66        *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
  67        *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
  68        *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
  69        *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
  70        ctx->count = 0;
  71        ctx->func = KIMD_SHA_512;
  72
  73        return 0;
  74}
  75
  76static struct shash_alg sha384_alg = {
  77        .digestsize     =       SHA384_DIGEST_SIZE,
  78        .init           =       sha384_init,
  79        .update         =       s390_sha_update,
  80        .final          =       s390_sha_final,
  81        .descsize       =       sizeof(struct s390_sha_ctx),
  82        .base           =       {
  83                .cra_name       =       "sha384",
  84                .cra_driver_name=       "sha384-s390",
  85                .cra_priority   =       CRYPT_S390_PRIORITY,
  86                .cra_flags      =       CRYPTO_ALG_TYPE_SHASH,
  87                .cra_blocksize  =       SHA384_BLOCK_SIZE,
  88                .cra_ctxsize    =       sizeof(struct s390_sha_ctx),
  89                .cra_module     =       THIS_MODULE,
  90        }
  91};
  92
  93MODULE_ALIAS("sha384");
  94
  95static int __init init(void)
  96{
  97        int ret;
  98
  99        if (!crypt_s390_func_available(KIMD_SHA_512))
 100                return -EOPNOTSUPP;
 101        if ((ret = crypto_register_shash(&sha512_alg)) < 0)
 102                goto out;
 103        if ((ret = crypto_register_shash(&sha384_alg)) < 0)
 104                crypto_unregister_shash(&sha512_alg);
 105out:
 106        return ret;
 107}
 108
 109static void __exit fini(void)
 110{
 111        crypto_unregister_shash(&sha512_alg);
 112        crypto_unregister_shash(&sha384_alg);
 113}
 114
 115module_init(init);
 116module_exit(fini);
 117
 118MODULE_LICENSE("GPL");
 119MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");
 120