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sha512_s390.c

/*
 * Cryptographic API.
 *
 * s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm.
 *
 * Copyright IBM Corp. 2007
 * Author(s): Jan Glauber (jang@de.ibm.com)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/crypto.h>

#include "sha.h"
#include "crypt_s390.h"

static void sha512_init(struct crypto_tfm *tfm)
{
      struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);

      *(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL;
      *(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL;
      *(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL;
      *(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL;
      *(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL;
      *(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL;
      *(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL;
      *(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL;
      ctx->count = 0;
      ctx->func = KIMD_SHA_512;
}

static struct crypto_alg sha512_alg = {
      .cra_name   =     "sha512",
      .cra_driver_name =      "sha512-s390",
      .cra_priority     =     CRYPT_S390_PRIORITY,
      .cra_flags  =     CRYPTO_ALG_TYPE_DIGEST,
      .cra_blocksize    =     SHA512_BLOCK_SIZE,
      .cra_ctxsize      =     sizeof(struct s390_sha_ctx),
      .cra_module =     THIS_MODULE,
      .cra_list   =     LIST_HEAD_INIT(sha512_alg.cra_list),
      .cra_u            =     { .digest = {
      .dia_digestsize   =     SHA512_DIGEST_SIZE,
      .dia_init   =     sha512_init,
      .dia_update =     s390_sha_update,
      .dia_final  =     s390_sha_final } }
};

MODULE_ALIAS("sha512");

static void sha384_init(struct crypto_tfm *tfm)
{
      struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);

      *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
      *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
      *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
      *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
      *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
      *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
      *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
      *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
      ctx->count = 0;
      ctx->func = KIMD_SHA_512;
}

static struct crypto_alg sha384_alg = {
      .cra_name   =     "sha384",
      .cra_driver_name =      "sha384-s390",
      .cra_priority     =     CRYPT_S390_PRIORITY,
      .cra_flags  =     CRYPTO_ALG_TYPE_DIGEST,
      .cra_blocksize    =     SHA384_BLOCK_SIZE,
      .cra_ctxsize      =     sizeof(struct s390_sha_ctx),
      .cra_module =     THIS_MODULE,
      .cra_list   =     LIST_HEAD_INIT(sha384_alg.cra_list),
      .cra_u            =     { .digest = {
      .dia_digestsize   =     SHA384_DIGEST_SIZE,
      .dia_init   =     sha384_init,
      .dia_update =     s390_sha_update,
      .dia_final  =     s390_sha_final } }
};

MODULE_ALIAS("sha384");

static int __init init(void)
{
      int ret;

      if (!crypt_s390_func_available(KIMD_SHA_512))
            return -EOPNOTSUPP;
      if ((ret = crypto_register_alg(&sha512_alg)) < 0)
            goto out;
      if ((ret = crypto_register_alg(&sha384_alg)) < 0)
            crypto_unregister_alg(&sha512_alg);
out:
      return ret;
}

static void __exit fini(void)
{
      crypto_unregister_alg(&sha512_alg);
      crypto_unregister_alg(&sha384_alg);
}

module_init(init);
module_exit(fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");

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