chacha20.h 704 Bytes
Newer Older
1
/* SPDX-License-Identifier: GPL-2.0 */
2 3 4 5 6 7 8
/*
 * Common values for the ChaCha20 algorithm
 */

#ifndef _CRYPTO_CHACHA20_H
#define _CRYPTO_CHACHA20_H

9
#include <crypto/skcipher.h>
10 11 12 13 14 15
#include <linux/types.h>
#include <linux/crypto.h>

#define CHACHA20_IV_SIZE	16
#define CHACHA20_KEY_SIZE	32
#define CHACHA20_BLOCK_SIZE	64
16
#define CHACHA20_BLOCK_WORDS	(CHACHA20_BLOCK_SIZE / sizeof(u32))
17 18 19 20 21

struct chacha20_ctx {
	u32 key[8];
};

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