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/cryptohash.h> 10 #include <linux/types.h> 11 #include <linux/string.h> 12 #include <crypto/sha.h> 13 #include <crypto/sha512_base.h> 14 #include <asm/neon.h> 15 16 MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64"); 17 MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>"); 18 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); 19 MODULE_LICENSE("GPL v2"); 20 MODULE_ALIAS_CRYPTO("sha384"); 21 MODULE_ALIAS_CRYPTO("sha512"); 22 23 asmlinkage void sha512_block_data_order(u64 *digest, const void *data, 24 unsigned int num_blks); 25 EXPORT_SYMBOL(sha512_block_data_order); 26 27 static void __sha512_block_data_order(struct sha512_state *sst, u8 const *src, 28 int blocks) 29 { 30 sha512_block_data_order(sst->state, src, blocks); 31 } 32 33 static int sha512_update(struct shash_desc *desc, const u8 *data, 34 unsigned int len) 35 { 36 return sha512_base_do_update(desc, data, len, 37 __sha512_block_data_order); 38 } 39 40 static int sha512_finup(struct shash_desc *desc, const u8 *data, 41 unsigned int len, u8 *out) 42 { 43 if (len) 44 sha512_base_do_update(desc, data, len, 45 __sha512_block_data_order); 46 sha512_base_do_finalize(desc, __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