arch/arm/crypto/sha1_glue.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Cryptographic API.
   4  * Glue code for the SHA1 Secure Hash Algorithm assembler implementation
   5  *
   6  * This file is based on sha1_generic.c and sha1_ssse3_glue.c
   7  *
   8  * Copyright (c) Alan Smithee.
   9  * Copyright (c) Andrew McDonald <[email protected]>
  10  * Copyright (c) Jean-Francois Dive <[email protected]>
  11  * Copyright (c) Mathias Krause <[email protected]>
  12  */
  13
  14 #include <crypto/internal/hash.h>
  15 #include <linux/init.h>
  16 #include <linux/module.h>
  17 #include <linux/types.h>
  18 #include <crypto/sha1.h>
  19 #include <crypto/sha1_base.h>
  20 #include <asm/byteorder.h>
  21
  22 #include "sha1.h"
  23
  24 asmlinkage void sha1_block_data_order(u32 *digest,
  25                 const unsigned char *data, unsigned int rounds);
  26
  27 int sha1_update_arm(struct shash_desc *desc, const u8 *data,
  28                     unsigned int len)
  29 {
  30         /* make sure casting to sha1_block_fn() is safe */
  31         BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0);
  32
  33         return sha1_base_do_update(desc, data, len,
  34                                    (sha1_block_fn *)sha1_block_data_order);
  35 }
  36 EXPORT_SYMBOL_GPL(sha1_update_arm);
  37
  38 static int sha1_final(struct shash_desc *desc, u8 *out)
  39 {
  40         sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_block_data_order);
  41         return sha1_base_finish(desc, out);
  42 }
  43
  44 int sha1_finup_arm(struct shash_desc *desc, const u8 *data,
  45                    unsigned int len, u8 *out)
  46 {
  47         sha1_base_do_update(desc, data, len,
  48                             (sha1_block_fn *)sha1_block_data_order);
  49         return sha1_final(desc, out);
  50 }
  51 EXPORT_SYMBOL_GPL(sha1_finup_arm);
  52
  53 static struct shash_alg alg = {
  54         .digestsize     =       SHA1_DIGEST_SIZE,
  55         .init           =       sha1_base_init,
  56         .update         =       sha1_update_arm,
  57         .final          =       sha1_final,
  58         .finup          =       sha1_finup_arm,
  59         .descsize       =       sizeof(struct sha1_state),
  60         .base           =       {
  61                 .cra_name       =       "sha1",
  62                 .cra_driver_name=       "sha1-asm",
  63                 .cra_priority   =       150,
  64                 .cra_blocksize  =       SHA1_BLOCK_SIZE,
  65                 .cra_module     =       THIS_MODULE,
  66         }
  67 };
  68
  69
  70 static int __init sha1_mod_init(void)
  71 {
  72         return crypto_register_shash(&alg);
  73 }
  74
  75
  76 static void __exit sha1_mod_fini(void)
  77 {
  78         crypto_unregister_shash(&alg);
  79 }
  80
  81
  82 module_init(sha1_mod_init);
  83 module_exit(sha1_mod_fini);
  84
  85 MODULE_LICENSE("GPL");
  86 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (ARM)");
  87 MODULE_ALIAS_CRYPTO("sha1");
  88 MODULE_AUTHOR("David McCullough <[email protected]>");