1 /* 2 * Cryptographic API. 3 * Glue code for the SHA1 Secure Hash Algorithm assembler implementation 4 * 5 * This file is based on sha1_generic.c and sha1_ssse3_glue.c 6 * 7 * Copyright (c) Alan Smithee. 8 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> 9 * Copyright (c) Jean-Francois Dive <jef@linuxbe.org> 10 * Copyright (c) Mathias Krause <minipli@googlemail.com> 11 * 12 * This program is free software; you can redistribute it and/or modify it 13 * under the terms of the GNU General Public License as published by the Free 14 * Software Foundation; either version 2 of the License, or (at your option) 15 * any later version. 16 * 17 */ 18 19 #include <crypto/internal/hash.h> 20 #include <linux/init.h> 21 #include <linux/module.h> 22 #include <linux/cryptohash.h> 23 #include <linux/types.h> 24 #include <crypto/sha.h> 25 #include <crypto/sha1_base.h> 26 #include <asm/byteorder.h> 27 28 #include "sha1.h" 29 30 asmlinkage void sha1_block_data_order(u32 *digest, 31 const unsigned char *data, unsigned int rounds); 32 33 int sha1_update_arm(struct shash_desc *desc, const u8 *data, 34 unsigned int len) 35 { 36 /* make sure casting to sha1_block_fn() is safe */ 37 BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0); 38 39 return sha1_base_do_update(desc, data, len, 40 (sha1_block_fn *)sha1_block_data_order); 41 } 42 EXPORT_SYMBOL_GPL(sha1_update_arm); 43 44 static int sha1_final(struct shash_desc *desc, u8 *out) 45 { 46 sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_block_data_order); 47 return sha1_base_finish(desc, out); 48 } 49 50 int sha1_finup_arm(struct shash_desc *desc, const u8 *data, 51 unsigned int len, u8 *out) 52 { 53 sha1_base_do_update(desc, data, len, 54 (sha1_block_fn *)sha1_block_data_order); 55 return sha1_final(desc, out); 56 } 57 EXPORT_SYMBOL_GPL(sha1_finup_arm); 58 59 static struct shash_alg alg = { 60 .digestsize = SHA1_DIGEST_SIZE, 61 .init = sha1_base_init, 62 .update = sha1_update_arm, 63 .final = sha1_final, 64 .finup = sha1_finup_arm, 65 .descsize = sizeof(struct sha1_state), 66 .base = { 67 .cra_name = "sha1", 68 .cra_driver_name= "sha1-asm", 69 .cra_priority = 150, 70 .cra_blocksize = SHA1_BLOCK_SIZE, 71 .cra_module = THIS_MODULE, 72 } 73 }; 74 75 76 static int __init sha1_mod_init(void) 77 { 78 return crypto_register_shash(&alg); 79 } 80 81 82 static void __exit sha1_mod_fini(void) 83 { 84 crypto_unregister_shash(&alg); 85 } 86 87 88 module_init(sha1_mod_init); 89 module_exit(sha1_mod_fini); 90 91 MODULE_LICENSE("GPL"); 92 MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm (ARM)"); 93 MODULE_ALIAS_CRYPTO("sha1"); 94 MODULE_AUTHOR("David McCullough <ucdevel@gmail.com>"); 95