1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Linux/arm64 port of the OpenSSL SHA512 implementation for AArch64 4 * 5 * Copyright (c) 2016 Linaro Ltd. <ard.biesheuvel@linaro.org> 6 */ 7 8#include <crypto/internal/hash.h> 9#include <linux/types.h> 10#include <linux/string.h> 11#include <crypto/sha2.h> 12#include <crypto/sha512_base.h> 13#include <asm/neon.h> 14 15MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64"); 16MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>"); 17MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); 18MODULE_LICENSE("GPL v2"); 19MODULE_ALIAS_CRYPTO("sha384"); 20MODULE_ALIAS_CRYPTO("sha512"); 21 22asmlinkage void sha512_block_data_order(u64 *digest, const void *data, 23 unsigned int num_blks); 24EXPORT_SYMBOL(sha512_block_data_order); 25 26static void sha512_arm64_transform(struct sha512_state *sst, u8 const *src, 27 int blocks) 28{ 29 sha512_block_data_order(sst->state, src, blocks); 30} 31 32static int sha512_update(struct shash_desc *desc, const u8 *data, 33 unsigned int len) 34{ 35 return sha512_base_do_update(desc, data, len, sha512_arm64_transform); 36} 37 38static 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, sha512_arm64_transform); 43 sha512_base_do_finalize(desc, sha512_arm64_transform); 44 45 return sha512_base_finish(desc, out); 46} 47 48static int sha512_final(struct shash_desc *desc, u8 *out) 49{ 50 return sha512_finup(desc, NULL, 0, out); 51} 52 53static struct shash_alg algs[] = { { 54 .digestsize = SHA512_DIGEST_SIZE, 55 .init = sha512_base_init, 56 .update = sha512_update, 57 .final = sha512_final, 58 .finup = sha512_finup, 59 .descsize = sizeof(struct sha512_state), 60 .base.cra_name = "sha512", 61 .base.cra_driver_name = "sha512-arm64", 62 .base.cra_priority = 150, 63 .base.cra_blocksize = SHA512_BLOCK_SIZE, 64 .base.cra_module = THIS_MODULE, 65}, { 66 .digestsize = SHA384_DIGEST_SIZE, 67 .init = sha384_base_init, 68 .update = sha512_update, 69 .final = sha512_final, 70 .finup = sha512_finup, 71 .descsize = sizeof(struct sha512_state), 72 .base.cra_name = "sha384", 73 .base.cra_driver_name = "sha384-arm64", 74 .base.cra_priority = 150, 75 .base.cra_blocksize = SHA384_BLOCK_SIZE, 76 .base.cra_module = THIS_MODULE, 77} }; 78 79static int __init sha512_mod_init(void) 80{ 81 return crypto_register_shashes(algs, ARRAY_SIZE(algs)); 82} 83 84static void __exit sha512_mod_fini(void) 85{ 86 crypto_unregister_shashes(algs, ARRAY_SIZE(algs)); 87} 88 89module_init(sha512_mod_init); 90module_exit(sha512_mod_fini); 91