linux/include/crypto/arc4.h
Ard Biesheuvel dc51f25752 crypto: arc4 - refactor arc4 core code into separate library
Refactor the core rc4 handling so we can move most users to a library
interface, permitting us to drop the cipher interface entirely in a
future patch. This is part of an effort to simplify the crypto API
and improve its robustness against incorrect use.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-06-20 14:18:33 +08:00

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C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Common values for ARC4 Cipher Algorithm
*/
#ifndef _CRYPTO_ARC4_H
#define _CRYPTO_ARC4_H
#include <linux/types.h>
#define ARC4_MIN_KEY_SIZE 1
#define ARC4_MAX_KEY_SIZE 256
#define ARC4_BLOCK_SIZE 1
struct arc4_ctx {
u32 S[256];
u32 x, y;
};
int arc4_setkey(struct arc4_ctx *ctx, const u8 *in_key, unsigned int key_len);
void arc4_crypt(struct arc4_ctx *ctx, u8 *out, const u8 *in, unsigned int len);
#endif /* _CRYPTO_ARC4_H */