1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * sha512-glue.c - accelerated SHA-384/512 for ARM |
4 | * |
5 | * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> |
6 | */ |
7 | |
8 | #include <crypto/internal/hash.h> |
9 | #include <crypto/sha2.h> |
10 | #include <crypto/sha512_base.h> |
11 | #include <linux/crypto.h> |
12 | #include <linux/module.h> |
13 | |
14 | #include <asm/hwcap.h> |
15 | #include <asm/neon.h> |
16 | |
17 | #include "sha512.h" |
18 | |
19 | MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM" ); |
20 | MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>" ); |
21 | MODULE_LICENSE("GPL v2" ); |
22 | |
23 | MODULE_ALIAS_CRYPTO("sha384" ); |
24 | MODULE_ALIAS_CRYPTO("sha512" ); |
25 | MODULE_ALIAS_CRYPTO("sha384-arm" ); |
26 | MODULE_ALIAS_CRYPTO("sha512-arm" ); |
27 | |
28 | asmlinkage void sha512_block_data_order(struct sha512_state *state, |
29 | u8 const *src, int blocks); |
30 | |
31 | int sha512_arm_update(struct shash_desc *desc, const u8 *data, |
32 | unsigned int len) |
33 | { |
34 | return sha512_base_do_update(desc, data, len, block_fn: sha512_block_data_order); |
35 | } |
36 | |
37 | static int sha512_arm_final(struct shash_desc *desc, u8 *out) |
38 | { |
39 | sha512_base_do_finalize(desc, block_fn: sha512_block_data_order); |
40 | return sha512_base_finish(desc, out); |
41 | } |
42 | |
43 | int sha512_arm_finup(struct shash_desc *desc, const u8 *data, |
44 | unsigned int len, u8 *out) |
45 | { |
46 | sha512_base_do_update(desc, data, len, block_fn: sha512_block_data_order); |
47 | return sha512_arm_final(desc, out); |
48 | } |
49 | |
50 | static struct shash_alg sha512_arm_algs[] = { { |
51 | .init = sha384_base_init, |
52 | .update = sha512_arm_update, |
53 | .final = sha512_arm_final, |
54 | .finup = sha512_arm_finup, |
55 | .descsize = sizeof(struct sha512_state), |
56 | .digestsize = SHA384_DIGEST_SIZE, |
57 | .base = { |
58 | .cra_name = "sha384" , |
59 | .cra_driver_name = "sha384-arm" , |
60 | .cra_priority = 250, |
61 | .cra_blocksize = SHA512_BLOCK_SIZE, |
62 | .cra_module = THIS_MODULE, |
63 | } |
64 | }, { |
65 | .init = sha512_base_init, |
66 | .update = sha512_arm_update, |
67 | .final = sha512_arm_final, |
68 | .finup = sha512_arm_finup, |
69 | .descsize = sizeof(struct sha512_state), |
70 | .digestsize = SHA512_DIGEST_SIZE, |
71 | .base = { |
72 | .cra_name = "sha512" , |
73 | .cra_driver_name = "sha512-arm" , |
74 | .cra_priority = 250, |
75 | .cra_blocksize = SHA512_BLOCK_SIZE, |
76 | .cra_module = THIS_MODULE, |
77 | } |
78 | } }; |
79 | |
80 | static int __init sha512_arm_mod_init(void) |
81 | { |
82 | int err; |
83 | |
84 | err = crypto_register_shashes(algs: sha512_arm_algs, |
85 | ARRAY_SIZE(sha512_arm_algs)); |
86 | if (err) |
87 | return err; |
88 | |
89 | if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) { |
90 | err = crypto_register_shashes(algs: sha512_neon_algs, |
91 | ARRAY_SIZE(sha512_neon_algs)); |
92 | if (err) |
93 | goto err_unregister; |
94 | } |
95 | return 0; |
96 | |
97 | err_unregister: |
98 | crypto_unregister_shashes(algs: sha512_arm_algs, |
99 | ARRAY_SIZE(sha512_arm_algs)); |
100 | |
101 | return err; |
102 | } |
103 | |
104 | static void __exit sha512_arm_mod_fini(void) |
105 | { |
106 | crypto_unregister_shashes(algs: sha512_arm_algs, |
107 | ARRAY_SIZE(sha512_arm_algs)); |
108 | if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) |
109 | crypto_unregister_shashes(algs: sha512_neon_algs, |
110 | ARRAY_SIZE(sha512_neon_algs)); |
111 | } |
112 | |
113 | module_init(sha512_arm_mod_init); |
114 | module_exit(sha512_arm_mod_fini); |
115 | |