arch/arm/crypto/blake2s-shash.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * BLAKE2s digest algorithm, ARM scalar implementation
   4  *
   5  * Copyright 2020 Google LLC
   6  */
   7
   8 #include <crypto/internal/blake2s.h>
   9 #include <crypto/internal/hash.h>
  10
  11 #include <linux/module.h>
  12
  13 static int crypto_blake2s_update_arm(struct shash_desc *desc,
  14                                      const u8 *in, unsigned int inlen)
  15 {
  16         return crypto_blake2s_update(desc, in, inlen, false);
  17 }
  18
  19 static int crypto_blake2s_final_arm(struct shash_desc *desc, u8 *out)
  20 {
  21         return crypto_blake2s_final(desc, out, false);
  22 }
  23
  24 #define BLAKE2S_ALG(name, driver_name, digest_size)                     \
  25         {                                                               \
  26                 .base.cra_name          = name,                         \
  27                 .base.cra_driver_name   = driver_name,                  \
  28                 .base.cra_priority      = 200,                          \
  29                 .base.cra_flags         = CRYPTO_ALG_OPTIONAL_KEY,      \
  30                 .base.cra_blocksize     = BLAKE2S_BLOCK_SIZE,           \
  31                 .base.cra_ctxsize       = sizeof(struct blake2s_tfm_ctx), \
  32                 .base.cra_module        = THIS_MODULE,                  \
  33                 .digestsize             = digest_size,                  \
  34                 .setkey                 = crypto_blake2s_setkey,        \
  35                 .init                   = crypto_blake2s_init,          \
  36                 .update                 = crypto_blake2s_update_arm,    \
  37                 .final                  = crypto_blake2s_final_arm,     \
  38                 .descsize               = sizeof(struct blake2s_state), \
  39         }
  40
  41 static struct shash_alg blake2s_arm_algs[] = {
  42         BLAKE2S_ALG("blake2s-128", "blake2s-128-arm", BLAKE2S_128_HASH_SIZE),
  43         BLAKE2S_ALG("blake2s-160", "blake2s-160-arm", BLAKE2S_160_HASH_SIZE),
  44         BLAKE2S_ALG("blake2s-224", "blake2s-224-arm", BLAKE2S_224_HASH_SIZE),
  45         BLAKE2S_ALG("blake2s-256", "blake2s-256-arm", BLAKE2S_256_HASH_SIZE),
  46 };
  47
  48 static int __init blake2s_arm_mod_init(void)
  49 {
  50         return IS_REACHABLE(CONFIG_CRYPTO_HASH) ?
  51                 crypto_register_shashes(blake2s_arm_algs,
  52                                         ARRAY_SIZE(blake2s_arm_algs)) : 0;
  53 }
  54
  55 static void __exit blake2s_arm_mod_exit(void)
  56 {
  57         if (IS_REACHABLE(CONFIG_CRYPTO_HASH))
  58                 crypto_unregister_shashes(blake2s_arm_algs,
  59                                           ARRAY_SIZE(blake2s_arm_algs));
  60 }
  61
  62 module_init(blake2s_arm_mod_init);
  63 module_exit(blake2s_arm_mod_exit);
  64
  65 MODULE_DESCRIPTION("BLAKE2s digest algorithm, ARM scalar implementation");
  66 MODULE_LICENSE("GPL");
  67 MODULE_AUTHOR("Eric Biggers <ebiggers@google.com>");
  68 MODULE_ALIAS_CRYPTO("blake2s-128");
  69 MODULE_ALIAS_CRYPTO("blake2s-128-arm");
  70 MODULE_ALIAS_CRYPTO("blake2s-160");
  71 MODULE_ALIAS_CRYPTO("blake2s-160-arm");
  72 MODULE_ALIAS_CRYPTO("blake2s-224");
  73 MODULE_ALIAS_CRYPTO("blake2s-224-arm");
  74 MODULE_ALIAS_CRYPTO("blake2s-256");
  75 MODULE_ALIAS_CRYPTO("blake2s-256-arm");