| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Linux/arm64 port of the OpenSSL SHA512 implementation for AArch64 |
| 3 | * |
| 4 | * Copyright (c) 2016 Linaro Ltd. <ard.biesheuvel@linaro.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the Free |
| 8 | * Software Foundation; either version 2 of the License, or (at your option) |
| 9 | * any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <crypto/internal/hash.h> |
| 14 | #include <linux/cryptohash.h> |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/string.h> |
| 17 | #include <crypto/sha.h> |
| 18 | #include <crypto/sha512_base.h> |
| 19 | #include <asm/neon.h> |
| 20 | |
| 21 | MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash for arm64"); |
| 22 | MODULE_AUTHOR("Andy Polyakov <appro@openssl.org>"); |
| 23 | MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); |
| 24 | MODULE_LICENSE("GPL v2"); |
| 25 | MODULE_ALIAS_CRYPTO("sha384"); |
| 26 | MODULE_ALIAS_CRYPTO("sha512"); |
| 27 | |
| 28 | asmlinkage void sha512_block_data_order(u32 *digest, const void *data, |
| 29 | unsigned int num_blks); |
| 30 | EXPORT_SYMBOL(sha512_block_data_order); |
| 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_fn *)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_fn *)sha512_block_data_order); |
| 45 | sha512_base_do_finalize(desc, |
| 46 | (sha512_block_fn *)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); |