linux/arch/s390/crypto/sha512_s390.c
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   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 <linux/init.h>
  16#include <linux/module.h>
  17#include <linux/crypto.h>
  18
  19#include "sha.h"
  20#include "crypt_s390.h"
  21
  22static void sha512_init(struct crypto_tfm *tfm)
  23{
  24        struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
  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
  38static struct crypto_alg sha512_alg = {
  39        .cra_name       =       "sha512",
  40        .cra_driver_name =      "sha512-s390",
  41        .cra_priority   =       CRYPT_S390_PRIORITY,
  42        .cra_flags      =       CRYPTO_ALG_TYPE_DIGEST,
  43        .cra_blocksize  =       SHA512_BLOCK_SIZE,
  44        .cra_ctxsize    =       sizeof(struct s390_sha_ctx),
  45        .cra_module     =       THIS_MODULE,
  46        .cra_list       =       LIST_HEAD_INIT(sha512_alg.cra_list),
  47        .cra_u          =       { .digest = {
  48        .dia_digestsize =       SHA512_DIGEST_SIZE,
  49        .dia_init       =       sha512_init,
  50        .dia_update     =       s390_sha_update,
  51        .dia_final      =       s390_sha_final } }
  52};
  53
  54MODULE_ALIAS("sha512");
  55
  56static void sha384_init(struct crypto_tfm *tfm)
  57{
  58        struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
  59
  60        *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
  61        *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
  62        *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
  63        *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
  64        *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
  65        *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
  66        *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
  67        *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
  68        ctx->count = 0;
  69        ctx->func = KIMD_SHA_512;
  70}
  71
  72static struct crypto_alg sha384_alg = {
  73        .cra_name       =       "sha384",
  74        .cra_driver_name =      "sha384-s390",
  75        .cra_priority   =       CRYPT_S390_PRIORITY,
  76        .cra_flags      =       CRYPTO_ALG_TYPE_DIGEST,
  77        .cra_blocksize  =       SHA384_BLOCK_SIZE,
  78        .cra_ctxsize    =       sizeof(struct s390_sha_ctx),
  79        .cra_module     =       THIS_MODULE,
  80        .cra_list       =       LIST_HEAD_INIT(sha384_alg.cra_list),
  81        .cra_u          =       { .digest = {
  82        .dia_digestsize =       SHA384_DIGEST_SIZE,
  83        .dia_init       =       sha384_init,
  84        .dia_update     =       s390_sha_update,
  85        .dia_final      =       s390_sha_final } }
  86};
  87
  88MODULE_ALIAS("sha384");
  89
  90static int __init init(void)
  91{
  92        int ret;
  93
  94        if (!crypt_s390_func_available(KIMD_SHA_512))
  95                return -EOPNOTSUPP;
  96        if ((ret = crypto_register_alg(&sha512_alg)) < 0)
  97                goto out;
  98        if ((ret = crypto_register_alg(&sha384_alg)) < 0)
  99                crypto_unregister_alg(&sha512_alg);
 100out:
 101        return ret;
 102}
 103
 104static void __exit fini(void)
 105{
 106        crypto_unregister_alg(&sha512_alg);
 107        crypto_unregister_alg(&sha384_alg);
 108}
 109
 110module_init(init);
 111module_exit(fini);
 112
 113MODULE_LICENSE("GPL");
 114MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");
 115