Commit | Line | Data |
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c80ae7ca AB |
1 | /* |
2 | * sha512-glue.c - accelerated SHA-384/512 for ARM | |
3 | * | |
4 | * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <crypto/internal/hash.h> | |
12 | #include <crypto/sha.h> | |
13 | #include <crypto/sha512_base.h> | |
14 | #include <linux/crypto.h> | |
15 | #include <linux/module.h> | |
16 | ||
17 | #include <asm/hwcap.h> | |
18 | #include <asm/neon.h> | |
19 | ||
20 | #include "sha512.h" | |
21 | ||
22 | MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM"); | |
23 | MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); | |
24 | MODULE_LICENSE("GPL v2"); | |
25 | ||
26 | MODULE_ALIAS_CRYPTO("sha384"); | |
27 | MODULE_ALIAS_CRYPTO("sha512"); | |
28 | MODULE_ALIAS_CRYPTO("sha384-arm"); | |
29 | MODULE_ALIAS_CRYPTO("sha512-arm"); | |
30 | ||
31 | asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks); | |
32 | ||
33 | int sha512_arm_update(struct shash_desc *desc, const u8 *data, | |
34 | unsigned int len) | |
35 | { | |
36 | return sha512_base_do_update(desc, data, len, | |
37 | (sha512_block_fn *)sha512_block_data_order); | |
38 | } | |
39 | ||
40 | int sha512_arm_final(struct shash_desc *desc, u8 *out) | |
41 | { | |
42 | sha512_base_do_finalize(desc, | |
43 | (sha512_block_fn *)sha512_block_data_order); | |
44 | return sha512_base_finish(desc, out); | |
45 | } | |
46 | ||
47 | int sha512_arm_finup(struct shash_desc *desc, const u8 *data, | |
48 | unsigned int len, u8 *out) | |
49 | { | |
50 | sha512_base_do_update(desc, data, len, | |
51 | (sha512_block_fn *)sha512_block_data_order); | |
52 | return sha512_arm_final(desc, out); | |
53 | } | |
54 | ||
55 | static struct shash_alg sha512_arm_algs[] = { { | |
56 | .init = sha384_base_init, | |
57 | .update = sha512_arm_update, | |
58 | .final = sha512_arm_final, | |
59 | .finup = sha512_arm_finup, | |
60 | .descsize = sizeof(struct sha512_state), | |
61 | .digestsize = SHA384_DIGEST_SIZE, | |
62 | .base = { | |
63 | .cra_name = "sha384", | |
64 | .cra_driver_name = "sha384-arm", | |
65 | .cra_priority = 250, | |
66 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, | |
67 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
68 | .cra_module = THIS_MODULE, | |
69 | } | |
70 | }, { | |
71 | .init = sha512_base_init, | |
72 | .update = sha512_arm_update, | |
73 | .final = sha512_arm_final, | |
74 | .finup = sha512_arm_finup, | |
75 | .descsize = sizeof(struct sha512_state), | |
76 | .digestsize = SHA512_DIGEST_SIZE, | |
77 | .base = { | |
78 | .cra_name = "sha512", | |
79 | .cra_driver_name = "sha512-arm", | |
80 | .cra_priority = 250, | |
81 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, | |
82 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
83 | .cra_module = THIS_MODULE, | |
84 | } | |
85 | } }; | |
86 | ||
87 | static int __init sha512_arm_mod_init(void) | |
88 | { | |
89 | int err; | |
90 | ||
91 | err = crypto_register_shashes(sha512_arm_algs, | |
92 | ARRAY_SIZE(sha512_arm_algs)); | |
93 | if (err) | |
94 | return err; | |
95 | ||
96 | if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) { | |
97 | err = crypto_register_shashes(sha512_neon_algs, | |
98 | ARRAY_SIZE(sha512_neon_algs)); | |
99 | if (err) | |
100 | goto err_unregister; | |
101 | } | |
102 | return 0; | |
103 | ||
104 | err_unregister: | |
105 | crypto_unregister_shashes(sha512_arm_algs, | |
106 | ARRAY_SIZE(sha512_arm_algs)); | |
107 | ||
108 | return err; | |
109 | } | |
110 | ||
111 | static void __exit sha512_arm_mod_fini(void) | |
112 | { | |
113 | crypto_unregister_shashes(sha512_arm_algs, | |
114 | ARRAY_SIZE(sha512_arm_algs)); | |
115 | if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) | |
116 | crypto_unregister_shashes(sha512_neon_algs, | |
117 | ARRAY_SIZE(sha512_neon_algs)); | |
118 | } | |
119 | ||
120 | module_init(sha512_arm_mod_init); | |
121 | module_exit(sha512_arm_mod_fini); |