arch/s390/crypto/sha512_s390.c

   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
  22 static 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
  38 static 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
  54 MODULE_ALIAS("sha512");
  55
  56 static 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
  72 static 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
  88 MODULE_ALIAS("sha384");
  89
  90 static 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);
 100 out:
 101         return ret;
 102 }
 103
 104 static void __exit fini(void)
 105 {
 106         crypto_unregister_alg(&sha512_alg);
 107         crypto_unregister_alg(&sha384_alg);
 108 }
 109
 110 module_init(init);
 111 module_exit(fini);
 112
 113 MODULE_LICENSE("GPL");
 114 MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");