linux/crypto/blake2s_generic.c
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   1// SPDX-License-Identifier: GPL-2.0 OR MIT
   2/*
   3 * shash interface to the generic implementation of BLAKE2s
   4 *
   5 * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
   6 */
   7
   8#include <crypto/internal/blake2s.h>
   9#include <crypto/internal/hash.h>
  10
  11#include <linux/types.h>
  12#include <linux/kernel.h>
  13#include <linux/module.h>
  14
  15static int crypto_blake2s_update_generic(struct shash_desc *desc,
  16                                         const u8 *in, unsigned int inlen)
  17{
  18        return crypto_blake2s_update(desc, in, inlen, blake2s_compress_generic);
  19}
  20
  21static int crypto_blake2s_final_generic(struct shash_desc *desc, u8 *out)
  22{
  23        return crypto_blake2s_final(desc, out, blake2s_compress_generic);
  24}
  25
  26#define BLAKE2S_ALG(name, driver_name, digest_size)                     \
  27        {                                                               \
  28                .base.cra_name          = name,                         \
  29                .base.cra_driver_name   = driver_name,                  \
  30                .base.cra_priority      = 100,                          \
  31                .base.cra_flags         = CRYPTO_ALG_OPTIONAL_KEY,      \
  32                .base.cra_blocksize     = BLAKE2S_BLOCK_SIZE,           \
  33                .base.cra_ctxsize       = sizeof(struct blake2s_tfm_ctx), \
  34                .base.cra_module        = THIS_MODULE,                  \
  35                .digestsize             = digest_size,                  \
  36                .setkey                 = crypto_blake2s_setkey,        \
  37                .init                   = crypto_blake2s_init,          \
  38                .update                 = crypto_blake2s_update_generic, \
  39                .final                  = crypto_blake2s_final_generic, \
  40                .descsize               = sizeof(struct blake2s_state), \
  41        }
  42
  43static struct shash_alg blake2s_algs[] = {
  44        BLAKE2S_ALG("blake2s-128", "blake2s-128-generic",
  45                    BLAKE2S_128_HASH_SIZE),
  46        BLAKE2S_ALG("blake2s-160", "blake2s-160-generic",
  47                    BLAKE2S_160_HASH_SIZE),
  48        BLAKE2S_ALG("blake2s-224", "blake2s-224-generic",
  49                    BLAKE2S_224_HASH_SIZE),
  50        BLAKE2S_ALG("blake2s-256", "blake2s-256-generic",
  51                    BLAKE2S_256_HASH_SIZE),
  52};
  53
  54static int __init blake2s_mod_init(void)
  55{
  56        return crypto_register_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
  57}
  58
  59static void __exit blake2s_mod_exit(void)
  60{
  61        crypto_unregister_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
  62}
  63
  64subsys_initcall(blake2s_mod_init);
  65module_exit(blake2s_mod_exit);
  66
  67MODULE_ALIAS_CRYPTO("blake2s-128");
  68MODULE_ALIAS_CRYPTO("blake2s-128-generic");
  69MODULE_ALIAS_CRYPTO("blake2s-160");
  70MODULE_ALIAS_CRYPTO("blake2s-160-generic");
  71MODULE_ALIAS_CRYPTO("blake2s-224");
  72MODULE_ALIAS_CRYPTO("blake2s-224-generic");
  73MODULE_ALIAS_CRYPTO("blake2s-256");
  74MODULE_ALIAS_CRYPTO("blake2s-256-generic");
  75MODULE_LICENSE("GPL v2");
  76
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