projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 747c8ce4 GBY |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | ||
| 3 | /* | |
| 4 | * Common values for the SM4 algorithm | |
| 5 | * Copyright (C) 2018 ARM Limited or its affiliates. | |
| 2b31277a | 6 | * Copyright (c) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com> |
| 747c8ce4 GBY |
7 | */ |
| 8 | ||
| 9 | #ifndef _CRYPTO_SM4_H | |
| 10 | #define _CRYPTO_SM4_H | |
| 11 | ||
| 12 | #include <linux/types.h> | |
| 13 | #include <linux/crypto.h> | |
| 14 | ||
| 15 | #define SM4_KEY_SIZE 16 | |
| 16 | #define SM4_BLOCK_SIZE 16 | |
| 17 | #define SM4_RKEY_WORDS 32 | |
| 18 | ||
| c59de48e | 19 | struct sm4_ctx { |
| 747c8ce4 GBY |
20 | u32 rkey_enc[SM4_RKEY_WORDS]; |
| 21 | u32 rkey_dec[SM4_RKEY_WORDS]; | |
| 22 | }; | |
| 23 | ||
| 73c919d3 TZ |
24 | extern const u32 crypto_sm4_fk[]; |
| 25 | extern const u32 crypto_sm4_ck[]; | |
| 26 | extern const u8 crypto_sm4_sbox[]; | |
| 27 | ||
| 2b31277a TZ |
28 | /** |
| 29 | * sm4_expandkey - Expands the SM4 key as described in GB/T 32907-2016 | |
| 30 | * @ctx: The location where the computed key will be stored. | |
| 31 | * @in_key: The supplied key. | |
| 32 | * @key_len: The length of the supplied key. | |
| 33 | * | |
| 34 | * Returns 0 on success. The function fails only if an invalid key size (or | |
| 35 | * pointer) is supplied. | |
| 36 | */ | |
| c59de48e | 37 | int sm4_expandkey(struct sm4_ctx *ctx, const u8 *in_key, |
| 747c8ce4 GBY |
38 | unsigned int key_len); |
| 39 | ||
| 2b31277a TZ |
40 | /** |
| 41 | * sm4_crypt_block - Encrypt or decrypt a single SM4 block | |
| 42 | * @rk: The rkey_enc for encrypt or rkey_dec for decrypt | |
| 43 | * @out: Buffer to store output data | |
| 44 | * @in: Buffer containing the input data | |
| 45 | */ | |
| 46 | void sm4_crypt_block(const u32 *rk, u8 *out, const u8 *in); | |
| 47 | ||
| 747c8ce4 | 48 | #endif |