| Ard Biesheuvel | c80ae7c | 2015-05-08 10:46:21 +0200 | [diff] [blame] | 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); |