sha512_s390.c 4.1 KB

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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 <crypto/internal/hash.h>
  16. #include <crypto/sha.h>
  17. #include <linux/errno.h>
  18. #include <linux/init.h>
  19. #include <linux/kernel.h>
  20. #include <linux/module.h>
  21. #include <linux/cpufeature.h>
  22. #include <asm/cpacf.h>
  23. #include "sha.h"
  24. static int sha512_init(struct shash_desc *desc)
  25. {
  26. struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
  27. *(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL;
  28. *(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL;
  29. *(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL;
  30. *(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL;
  31. *(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL;
  32. *(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL;
  33. *(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL;
  34. *(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL;
  35. ctx->count = 0;
  36. ctx->func = CPACF_KIMD_SHA_512;
  37. return 0;
  38. }
  39. static int sha512_export(struct shash_desc *desc, void *out)
  40. {
  41. struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
  42. struct sha512_state *octx = out;
  43. octx->count[0] = sctx->count;
  44. octx->count[1] = 0;
  45. memcpy(octx->state, sctx->state, sizeof(octx->state));
  46. memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
  47. return 0;
  48. }
  49. static int sha512_import(struct shash_desc *desc, const void *in)
  50. {
  51. struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
  52. const struct sha512_state *ictx = in;
  53. if (unlikely(ictx->count[1]))
  54. return -ERANGE;
  55. sctx->count = ictx->count[0];
  56. memcpy(sctx->state, ictx->state, sizeof(ictx->state));
  57. memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
  58. sctx->func = CPACF_KIMD_SHA_512;
  59. return 0;
  60. }
  61. static struct shash_alg sha512_alg = {
  62. .digestsize = SHA512_DIGEST_SIZE,
  63. .init = sha512_init,
  64. .update = s390_sha_update,
  65. .final = s390_sha_final,
  66. .export = sha512_export,
  67. .import = sha512_import,
  68. .descsize = sizeof(struct s390_sha_ctx),
  69. .statesize = sizeof(struct sha512_state),
  70. .base = {
  71. .cra_name = "sha512",
  72. .cra_driver_name= "sha512-s390",
  73. .cra_priority = 300,
  74. .cra_flags = CRYPTO_ALG_TYPE_SHASH,
  75. .cra_blocksize = SHA512_BLOCK_SIZE,
  76. .cra_module = THIS_MODULE,
  77. }
  78. };
  79. MODULE_ALIAS_CRYPTO("sha512");
  80. static int sha384_init(struct shash_desc *desc)
  81. {
  82. struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
  83. *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
  84. *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
  85. *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
  86. *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
  87. *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
  88. *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
  89. *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
  90. *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
  91. ctx->count = 0;
  92. ctx->func = CPACF_KIMD_SHA_512;
  93. return 0;
  94. }
  95. static struct shash_alg sha384_alg = {
  96. .digestsize = SHA384_DIGEST_SIZE,
  97. .init = sha384_init,
  98. .update = s390_sha_update,
  99. .final = s390_sha_final,
  100. .export = sha512_export,
  101. .import = sha512_import,
  102. .descsize = sizeof(struct s390_sha_ctx),
  103. .statesize = sizeof(struct sha512_state),
  104. .base = {
  105. .cra_name = "sha384",
  106. .cra_driver_name= "sha384-s390",
  107. .cra_priority = 300,
  108. .cra_flags = CRYPTO_ALG_TYPE_SHASH,
  109. .cra_blocksize = SHA384_BLOCK_SIZE,
  110. .cra_ctxsize = sizeof(struct s390_sha_ctx),
  111. .cra_module = THIS_MODULE,
  112. }
  113. };
  114. MODULE_ALIAS_CRYPTO("sha384");
  115. static int __init init(void)
  116. {
  117. int ret;
  118. if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA_512))
  119. return -EOPNOTSUPP;
  120. if ((ret = crypto_register_shash(&sha512_alg)) < 0)
  121. goto out;
  122. if ((ret = crypto_register_shash(&sha384_alg)) < 0)
  123. crypto_unregister_shash(&sha512_alg);
  124. out:
  125. return ret;
  126. }
  127. static void __exit fini(void)
  128. {
  129. crypto_unregister_shash(&sha512_alg);
  130. crypto_unregister_shash(&sha384_alg);
  131. }
  132. module_cpu_feature_match(MSA, init);
  133. module_exit(fini);
  134. MODULE_LICENSE("GPL");
  135. MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");