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 <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
  22 static 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
  40 static 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
  56 MODULE_ALIAS("sha512");
  57
  58 static 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
  76 static 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
  93 MODULE_ALIAS("sha384");
  94
  95 static 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);
 105 out:
 106         return ret;
 107 }
 108
 109 static void __exit fini(void)
 110 {
 111         crypto_unregister_shash(&sha512_alg);
 112         crypto_unregister_shash(&sha384_alg);
 113 }
 114
 115 module_init(init);
 116 module_exit(fini);
 117
 118 MODULE_LICENSE("GPL");
 119 MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");