Cregit: chacha20.h

Contributors: 5
Author	Tokens	Token Proportion	Commits	Commit Proportion
Martin Willi	79	77.45%	1	20.00%
Theodore Y. Ts'o	11	10.78%	1	20.00%
Ard Biesheuvel	6	5.88%	1	20.00%
Eric Biggers	5	4.90%	1	20.00%
Greg Kroah-Hartman	1	0.98%	1	20.00%
Total	102		5

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Common values for the ChaCha20 algorithm
 */

#ifndef _CRYPTO_CHACHA20_H
#define _CRYPTO_CHACHA20_H

#include <crypto/skcipher.h>
#include <linux/types.h>
#include <linux/crypto.h>

#define CHACHA20_IV_SIZE	16
#define CHACHA20_KEY_SIZE	32
#define CHACHA20_BLOCK_SIZE	64
#define CHACHA20_BLOCK_WORDS	(CHACHA20_BLOCK_SIZE / sizeof(u32))

struct chacha20_ctx {
	u32 key[8];
};

void chacha20_block(u32 *state, u32 *stream);
void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv);
int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
			   unsigned int keysize);
int crypto_chacha20_crypt(struct skcipher_request *req);

#endif