| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Common values for the ChaCha20 algorithm |
| 4 | */ |
| 5 | |
| 6 | #ifndef _CRYPTO_CHACHA20_H |
| 7 | #define _CRYPTO_CHACHA20_H |
| 8 | |
| 9 | #include <crypto/skcipher.h> |
| 10 | #include <linux/types.h> |
| 11 | #include <linux/crypto.h> |
| 12 | |
| 13 | #define CHACHA20_IV_SIZE 16 |
| 14 | #define CHACHA20_KEY_SIZE 32 |
| 15 | #define CHACHA20_BLOCK_SIZE 64 |
| 16 | #define CHACHA20_BLOCK_WORDS (CHACHA20_BLOCK_SIZE / sizeof(u32)) |
| 17 | |
| 18 | struct chacha20_ctx { |
| 19 | u32 key[8]; |
| 20 | }; |
| 21 | |
| 22 | void chacha20_block(u32 *state, u32 *stream); |
| 23 | void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv); |
| 24 | int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key, |
| 25 | unsigned int keysize); |
| 26 | int crypto_chacha20_crypt(struct skcipher_request *req); |
| 27 | |
| 28 | #endif |