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
15 struct arc4_ctx {
16 u32 S[256];
17 u32 x, y;
18 };
19
20 int arc4_setkey(struct arc4_ctx *ctx, const u8 *in_key, unsigned int key_len);
21 void arc4_crypt(struct arc4_ctx *ctx, u8 *out, const u8 *in, unsigned int len);
22
23 #endif /* _CRYPTO_ARC4_H */
24
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