arch/x86/crypto/blake2s-shash.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /*
   3  * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
   4  */
   5
   6 #include <crypto/internal/blake2s.h>
   7 #include <crypto/internal/simd.h>
   8 #include <crypto/internal/hash.h>
   9
  10 #include <linux/types.h>
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/sizes.h>
  14
  15 #include <asm/cpufeature.h>
  16 #include <asm/processor.h>
  17
  18 static int crypto_blake2s_update_x86(struct shash_desc *desc,
  19                                      const u8 *in, unsigned int inlen)
  20 {
  21         return crypto_blake2s_update(desc, in, inlen, false);
  22 }
  23
  24 static int crypto_blake2s_final_x86(struct shash_desc *desc, u8 *out)
  25 {
  26         return crypto_blake2s_final(desc, out, false);
  27 }
  28
  29 #define BLAKE2S_ALG(name, driver_name, digest_size)                     \
  30         {                                                               \
  31                 .base.cra_name          = name,                         \
  32                 .base.cra_driver_name   = driver_name,                  \
  33                 .base.cra_priority      = 200,                          \
  34                 .base.cra_flags         = CRYPTO_ALG_OPTIONAL_KEY,      \
  35                 .base.cra_blocksize     = BLAKE2S_BLOCK_SIZE,           \
  36                 .base.cra_ctxsize       = sizeof(struct blake2s_tfm_ctx), \
  37                 .base.cra_module        = THIS_MODULE,                  \
  38                 .digestsize             = digest_size,                  \
  39                 .setkey                 = crypto_blake2s_setkey,        \
  40                 .init                   = crypto_blake2s_init,          \
  41                 .update                 = crypto_blake2s_update_x86,    \
  42                 .final                  = crypto_blake2s_final_x86,     \
  43                 .descsize               = sizeof(struct blake2s_state), \
  44         }
  45
  46 static struct shash_alg blake2s_algs[] = {
  47         BLAKE2S_ALG("blake2s-128", "blake2s-128-x86", BLAKE2S_128_HASH_SIZE),
  48         BLAKE2S_ALG("blake2s-160", "blake2s-160-x86", BLAKE2S_160_HASH_SIZE),
  49         BLAKE2S_ALG("blake2s-224", "blake2s-224-x86", BLAKE2S_224_HASH_SIZE),
  50         BLAKE2S_ALG("blake2s-256", "blake2s-256-x86", BLAKE2S_256_HASH_SIZE),
  51 };
  52
  53 static int __init blake2s_mod_init(void)
  54 {
  55         if (IS_REACHABLE(CONFIG_CRYPTO_HASH) && boot_cpu_has(X86_FEATURE_SSSE3))
  56                 return crypto_register_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
  57         return 0;
  58 }
  59
  60 static void __exit blake2s_mod_exit(void)
  61 {
  62         if (IS_REACHABLE(CONFIG_CRYPTO_HASH) && boot_cpu_has(X86_FEATURE_SSSE3))
  63                 crypto_unregister_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
  64 }
  65
  66 module_init(blake2s_mod_init);
  67 module_exit(blake2s_mod_exit);
  68
  69 MODULE_ALIAS_CRYPTO("blake2s-128");
  70 MODULE_ALIAS_CRYPTO("blake2s-128-x86");
  71 MODULE_ALIAS_CRYPTO("blake2s-160");
  72 MODULE_ALIAS_CRYPTO("blake2s-160-x86");
  73 MODULE_ALIAS_CRYPTO("blake2s-224");
  74 MODULE_ALIAS_CRYPTO("blake2s-224-x86");
  75 MODULE_ALIAS_CRYPTO("blake2s-256");
  76 MODULE_ALIAS_CRYPTO("blake2s-256-x86");
  77 MODULE_LICENSE("GPL v2");