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_arm64_transform(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, sha512_arm64_transform); 36 } 37 38 static 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 48 static int sha512_final(struct shash_desc *desc, u8 *out) 49 { 50 return sha512_finup(desc, NULL, 0, out); 51 } 52 53 static 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 79 static int __init sha512_mod_init(void) 80 { 81 return crypto_register_shashes(algs, ARRAY_SIZE(algs)); 82 } 83 84 static void __exit sha512_mod_fini(void) 85 { 86 crypto_unregister_shashes(algs, ARRAY_SIZE(algs)); 87 } 88 89 module_init(sha512_mod_init); 90 module_exit(sha512_mod_fini); 91