projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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); |