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 15 MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64"); 16 MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>"); 17 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); 18 MODULE_LICENSE("GPL v2"); 19 MODULE_ALIAS_CRYPTO("sha384"); 20 MODULE_ALIAS_CRYPTO("sha512"); 21 22 asmlinkage void sha512_block_data_order(u64 *digest, const void *data, 23 unsigned int num_blks); 24 EXPORT_SYMBOL(sha512_block_data_order); 25 26 static void __sha512_block_data_order(struct sha512_state *sst, u8 const *src, 27 int blocks) 28 { 29 sha512_block_data_order(sst->state, src, blocks); 30 } 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_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_data_order); 45 sha512_base_do_finalize(desc, __sha512_block_data_order); 46 47 return sha512_base_finish(desc, out); 48 } 49 50 static int sha512_final(struct shash_desc *desc, u8 *out) 51 { 52 return sha512_finup(desc, NULL, 0, out); 53 } 54 55 static struct shash_alg algs[] = { { 56 .digestsize = SHA512_DIGEST_SIZE, 57 .init = sha512_base_init, 58 .update = sha512_update, 59 .final = sha512_final, 60 .finup = sha512_finup, 61 .descsize = sizeof(struct sha512_state), 62 .base.cra_name = "sha512", 63 .base.cra_driver_name = "sha512-arm64", 64 .base.cra_priority = 150, 65 .base.cra_blocksize = SHA512_BLOCK_SIZE, 66 .base.cra_module = THIS_MODULE, 67 }, { 68 .digestsize = SHA384_DIGEST_SIZE, 69 .init = sha384_base_init, 70 .update = sha512_update, 71 .final = sha512_final, 72 .finup = sha512_finup, 73 .descsize = sizeof(struct sha512_state), 74 .base.cra_name = "sha384", 75 .base.cra_driver_name = "sha384-arm64", 76 .base.cra_priority = 150, 77 .base.cra_blocksize = SHA384_BLOCK_SIZE, 78 .base.cra_module = THIS_MODULE, 79 } }; 80 81 static int __init sha512_mod_init(void) 82 { 83 return crypto_register_shashes(algs, ARRAY_SIZE(algs)); 84 } 85 86 static void __exit sha512_mod_fini(void) 87 { 88 crypto_unregister_shashes(algs, ARRAY_SIZE(algs)); 89 } 90 91 module_init(sha512_mod_init); 92 module_exit(sha512_mod_fini); 93