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 <andrew@mcdonald.org.uk> 10 * Copyright (c) Jean-Francois Dive <jef@linuxbe.org> 11 * Copyright (c) Mathias Krause <minipli@googlemail.com> 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/sha.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 <ucdevel@gmail.com>"); 89