From dc51f25752bfcb5f1edbac1ca4ce16af7b3bd507 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Wed, 12 Jun 2019 18:19:53 +0200 Subject: 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 Signed-off-by: Herbert Xu --- include/crypto/arc4.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/crypto/arc4.h') diff --git a/include/crypto/arc4.h b/include/crypto/arc4.h index 5b2c24ab0139..f3c22fe01704 100644 --- a/include/crypto/arc4.h +++ b/include/crypto/arc4.h @@ -6,8 +6,18 @@ #ifndef _CRYPTO_ARC4_H #define _CRYPTO_ARC4_H +#include + #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 */ -- cgit v1.2.3-59-g8ed1b