arch/arm64/crypto/sha512-glue.c

   1 /*
   2  * Linux/arm64 port of the OpenSSL SHA512 implementation for AArch64
   3  *
   4  * Copyright (c) 2016 Linaro Ltd. <ard.biesheuvel@linaro.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  */
  12
  13 #include <crypto/internal/hash.h>
  14 #include <linux/cryptohash.h>
  15 #include <linux/types.h>
  16 #include <linux/string.h>
  17 #include <crypto/sha.h>
  18 #include <crypto/sha512_base.h>
  19 #include <asm/neon.h>
  20
  21 MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64");
  22 MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>");
  23 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
  24 MODULE_LICENSE("GPL v2");
  25 MODULE_ALIAS_CRYPTO("sha384");
  26 MODULE_ALIAS_CRYPTO("sha512");
  27
  28 asmlinkage void sha512_block_data_order(u32 *digest, const void *data,
  29                                         unsigned int num_blks);
  30
  31 static int sha512_update(struct shash_desc *desc, const u8 *data,
  32                          unsigned int len)
  33 {
  34         return sha512_base_do_update(desc, data, len,
  35                         (sha512_block_fn *)sha512_block_data_order);
  36 }
  37
  38 static int sha512_finup(struct shash_desc *desc, const u8 *data,
  39                         unsigned int len, u8 *out)
  40 {
  41         if (len)
  42                 sha512_base_do_update(desc, data, len,
  43                         (sha512_block_fn *)sha512_block_data_order);
  44         sha512_base_do_finalize(desc,
  45                         (sha512_block_fn *)sha512_block_data_order);
  46
  47         return sha512_base_finish(desc, out);
  48 }
  49
  50 static int sha512_final(struct shash_desc *desc, u8 *out)
  51 {
  52         return sha512_finup(desc, NULL, 0, out);
  53 }
  54
  55 static struct shash_alg algs[] = { {
  56         .digestsize             = SHA512_DIGEST_SIZE,
  57         .init                   = sha512_base_init,
  58         .update                 = sha512_update,
  59         .final                  = sha512_final,
  60         .finup                  = sha512_finup,
  61         .descsize               = sizeof(struct sha512_state),
  62         .base.cra_name          = "sha512",
  63         .base.cra_driver_name   = "sha512-arm64",
  64         .base.cra_priority      = 150,
  65         .base.cra_flags         = CRYPTO_ALG_TYPE_SHASH,
  66         .base.cra_blocksize     = SHA512_BLOCK_SIZE,
  67         .base.cra_module        = THIS_MODULE,
  68 }, {
  69         .digestsize             = SHA384_DIGEST_SIZE,
  70         .init                   = sha384_base_init,
  71         .update                 = sha512_update,
  72         .final                  = sha512_final,
  73         .finup                  = sha512_finup,
  74         .descsize               = sizeof(struct sha512_state),
  75         .base.cra_name          = "sha384",
  76         .base.cra_driver_name   = "sha384-arm64",
  77         .base.cra_priority      = 150,
  78         .base.cra_flags         = CRYPTO_ALG_TYPE_SHASH,
  79         .base.cra_blocksize     = SHA384_BLOCK_SIZE,
  80         .base.cra_module        = THIS_MODULE,
  81 } };
  82
  83 static int __init sha512_mod_init(void)
  84 {
  85         return crypto_register_shashes(algs, ARRAY_SIZE(algs));
  86 }
  87
  88 static void __exit sha512_mod_fini(void)
  89 {
  90         crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
  91 }
  92
  93 module_init(sha512_mod_init);
  94 module_exit(sha512_mod_fini);