arch/arm64/crypto/sha512-glue.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Linux/arm64 port of the OpenSSL SHA512 implementation for AArch64
   4  *
   5  * Copyright (c) 2016 Linaro Ltd. <ard.biesheuvel@linaro.org>
   6  */
   7
   8 #include <crypto/internal/hash.h>
   9 #include <linux/cryptohash.h>
  10 #include <linux/types.h>
  11 #include <linux/string.h>
  12 #include <crypto/sha.h>
  13 #include <crypto/sha512_base.h>
  14 #include <asm/neon.h>
  15
  16 MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64");
  17 MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>");
  18 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
  19 MODULE_LICENSE("GPL v2");
  20 MODULE_ALIAS_CRYPTO("sha384");
  21 MODULE_ALIAS_CRYPTO("sha512");
  22
  23 asmlinkage void sha512_block_data_order(u32 *digest, const void *data,
  24                                         unsigned int num_blks);
  25 EXPORT_SYMBOL(sha512_block_data_order);
  26
  27 static int sha512_update(struct shash_desc *desc, const u8 *data,
  28                          unsigned int len)
  29 {
  30         return sha512_base_do_update(desc, data, len,
  31                         (sha512_block_fn *)sha512_block_data_order);
  32 }
  33
  34 static int sha512_finup(struct shash_desc *desc, const u8 *data,
  35                         unsigned int len, u8 *out)
  36 {
  37         if (len)
  38                 sha512_base_do_update(desc, data, len,
  39                         (sha512_block_fn *)sha512_block_data_order);
  40         sha512_base_do_finalize(desc,
  41                         (sha512_block_fn *)sha512_block_data_order);
  42
  43         return sha512_base_finish(desc, out);
  44 }
  45
  46 static int sha512_final(struct shash_desc *desc, u8 *out)
  47 {
  48         return sha512_finup(desc, NULL, 0, out);
  49 }
  50
  51 static struct shash_alg algs[] = { {
  52         .digestsize             = SHA512_DIGEST_SIZE,
  53         .init                   = sha512_base_init,
  54         .update                 = sha512_update,
  55         .final                  = sha512_final,
  56         .finup                  = sha512_finup,
  57         .descsize               = sizeof(struct sha512_state),
  58         .base.cra_name          = "sha512",
  59         .base.cra_driver_name   = "sha512-arm64",
  60         .base.cra_priority      = 150,
  61         .base.cra_blocksize     = SHA512_BLOCK_SIZE,
  62         .base.cra_module        = THIS_MODULE,
  63 }, {
  64         .digestsize             = SHA384_DIGEST_SIZE,
  65         .init                   = sha384_base_init,
  66         .update                 = sha512_update,
  67         .final                  = sha512_final,
  68         .finup                  = sha512_finup,
  69         .descsize               = sizeof(struct sha512_state),
  70         .base.cra_name          = "sha384",
  71         .base.cra_driver_name   = "sha384-arm64",
  72         .base.cra_priority      = 150,
  73         .base.cra_blocksize     = SHA384_BLOCK_SIZE,
  74         .base.cra_module        = THIS_MODULE,
  75 } };
  76
  77 static int __init sha512_mod_init(void)
  78 {
  79         return crypto_register_shashes(algs, ARRAY_SIZE(algs));
  80 }
  81
  82 static void __exit sha512_mod_fini(void)
  83 {
  84         crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
  85 }
  86
  87 module_init(sha512_mod_init);
  88 module_exit(sha512_mod_fini);