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(u32 *digest, const void *data, 24 unsigned int num_blks); 25 EXPORT_SYMBOL(sha512_block_data_order); 26 27 static int sha512_update(struct shash_desc *desc, const u8 *data, 28 unsigned int len) 29 { 30 return sha512_base_do_update(desc, data, len, 31 (sha512_block_fn *)sha512_block_data_order); 32 } 33 34 static int sha512_finup(struct shash_desc *desc, const u8 *data, 35 unsigned int len, u8 *out) 36 { 37 if (len) 38 sha512_base_do_update(desc, data, len, 39 (sha512_block_fn *)sha512_block_data_order); 40 sha512_base_do_finalize(desc, 41 (sha512_block_fn *)sha512_block_data_order); 42 43 return sha512_base_finish(desc, out); 44 } 45 46 static int sha512_final(struct shash_desc *desc, u8 *out) 47 { 48 return sha512_finup(desc, NULL, 0, out); 49 } 50 51 static struct shash_alg algs[] = { { 52 .digestsize = SHA512_DIGEST_SIZE, 53 .init = sha512_base_init, 54 .update = sha512_update, 55 .final = sha512_final, 56 .finup = sha512_finup, 57 .descsize = sizeof(struct sha512_state), 58 .base.cra_name = "sha512", 59 .base.cra_driver_name = "sha512-arm64", 60 .base.cra_priority = 150, 61 .base.cra_blocksize = SHA512_BLOCK_SIZE, 62 .base.cra_module = THIS_MODULE, 63 }, { 64 .digestsize = SHA384_DIGEST_SIZE, 65 .init = sha384_base_init, 66 .update = sha512_update, 67 .final = sha512_final, 68 .finup = sha512_finup, 69 .descsize = sizeof(struct sha512_state), 70 .base.cra_name = "sha384", 71 .base.cra_driver_name = "sha384-arm64", 72 .base.cra_priority = 150, 73 .base.cra_blocksize = SHA384_BLOCK_SIZE, 74 .base.cra_module = THIS_MODULE, 75 } }; 76 77 static int __init sha512_mod_init(void) 78 { 79 return crypto_register_shashes(algs, ARRAY_SIZE(algs)); 80 } 81 82 static void __exit sha512_mod_fini(void) 83 { 84 crypto_unregister_shashes(algs, ARRAY_SIZE(algs)); 85 } 86 87 module_init(sha512_mod_init); 88 module_exit(sha512_mod_fini); 89