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, block_fn: 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, block_fn: sha512_arm64_transform); |
43 | sha512_base_do_finalize(desc, block_fn: 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, len: 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 | |