1/* SPDX-License-Identifier: GPL-2.0+ */
 2/*
 3 * Common values for ARC4 Cipher Algorithm
 4 */
 5
 6#ifndef _CRYPTO_ARC4_H
 7#define _CRYPTO_ARC4_H
 8
 9#include <linux/types.h>
10
11#define ARC4_MIN_KEY_SIZE	1
12#define ARC4_MAX_KEY_SIZE	256
13#define ARC4_BLOCK_SIZE		1
14
15struct arc4_ctx {
16	u32 S[256];
17	u32 x, y;
18};
19
20int arc4_setkey(struct arc4_ctx *ctx, const u8 *in_key, unsigned int key_len);
21void arc4_crypt(struct arc4_ctx *ctx, u8 *out, const u8 *in, unsigned int len);
22
23#endif /* _CRYPTO_ARC4_H */