| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Martin Willi | 31d7247 | 2015-07-16 19:14:00 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Common values for the ChaCha20 algorithm |
| 4 | */ |
| 5 | |
| 6 | #ifndef _CRYPTO_CHACHA20_H |
| 7 | #define _CRYPTO_CHACHA20_H |
| 8 | |
| Ard Biesheuvel | 9ae433b | 2016-12-09 14:33:51 +0000 | [diff] [blame] | 9 | #include <crypto/skcipher.h> |
| Martin Willi | 31d7247 | 2015-07-16 19:14:00 +0200 | [diff] [blame] | 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 | |
| 17 | struct chacha20_ctx { |
| 18 | u32 key[8]; |
| 19 | }; |
| 20 | |
| Theodore Ts'o | e192be9 | 2016-06-12 18:13:36 -0400 | [diff] [blame] | 21 | void chacha20_block(u32 *state, void *stream); |
| Martin Willi | 31d7247 | 2015-07-16 19:14:00 +0200 | [diff] [blame] | 22 | void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv); |
| Ard Biesheuvel | 9ae433b | 2016-12-09 14:33:51 +0000 | [diff] [blame] | 23 | int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key, |
| Martin Willi | 31d7247 | 2015-07-16 19:14:00 +0200 | [diff] [blame] | 24 | unsigned int keysize); |
| Ard Biesheuvel | 9ae433b | 2016-12-09 14:33:51 +0000 | [diff] [blame] | 25 | int crypto_chacha20_crypt(struct skcipher_request *req); |
| Martin Willi | 31d7247 | 2015-07-16 19:14:00 +0200 | [diff] [blame] | 26 | |
| 27 | #endif |