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 EXPORT_SYMBOL(sha512_block_data_order); 31 32 static int sha512_update(struct shash_desc *desc, const u8 *data, 33 unsigned int len) 34 { 35 return sha512_base_do_update(desc, data, len, 36 (sha512_block_fn *)sha512_block_data_order); 37 } 38 39 static int sha512_finup(struct shash_desc *desc, const u8 *data, 40 unsigned int len, u8 *out) 41 { 42 if (len) 43 sha512_base_do_update(desc, data, len, 44 (sha512_block_fn *)sha512_block_data_order); 45 sha512_base_do_finalize(desc, 46 (sha512_block_fn *)sha512_block_data_order); 47 48 return sha512_base_finish(desc, out); 49 } 50 51 static int sha512_final(struct shash_desc *desc, u8 *out) 52 { 53 return sha512_finup(desc, NULL, 0, out); 54 } 55 56 static struct shash_alg algs[] = { { 57 .digestsize = SHA512_DIGEST_SIZE, 58 .init = sha512_base_init, 59 .update = sha512_update, 60 .final = sha512_final, 61 .finup = sha512_finup, 62 .descsize = sizeof(struct sha512_state), 63 .base.cra_name = "sha512", 64 .base.cra_driver_name = "sha512-arm64", 65 .base.cra_priority = 150, 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_blocksize = SHA384_BLOCK_SIZE, 79 .base.cra_module = THIS_MODULE, 80 } }; 81 82 static int __init sha512_mod_init(void) 83 { 84 return crypto_register_shashes(algs, ARRAY_SIZE(algs)); 85 } 86 87 static void __exit sha512_mod_fini(void) 88 { 89 crypto_unregister_shashes(algs, ARRAY_SIZE(algs)); 90 } 91 92 module_init(sha512_mod_init); 93 module_exit(sha512_mod_fini); 94