arc4.h File Reference

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	arc4_ctx
Defines
#define	ARC4_CTX_SIZE   sizeof ( struct arc4_ctx )
Functions
	FILE_LICENCE (GPL2_OR_LATER)
void	arc4_skip (const void *key, size_t keylen, size_t skip, const void *src, void *dst, size_t msglen)
	Perform ARC4 encryption or decryption, skipping initial keystream bytes.
Variables
struct cipher_algorithm	arc4_algorithm

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Define Documentation

#define ARC4_CTX_SIZE   sizeof ( struct arc4_ctx )

Definition at line 15 of file arc4.h.

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Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

void arc4_skip	(	const void *	key,
		size_t	keylen,
		size_t	skip,
		const void *	src,
		void *	dst,
		size_t	msglen
	)

Perform ARC4 encryption or decryption, skipping initial keystream bytes.

Parameters:

	key	ARC4 encryption key
	keylen	Key length
	skip	Number of bytes of keystream to skip
	src	Message to encrypt or decrypt
	msglen	Length of message

Return values:

dst

Encrypted or decrypted message

Definition at line 114 of file arc4.c.

References arc4_setkey(), arc4_xor(), and NULL.

Referenced by tkip_kie_decrypt().

{
        struct arc4_ctx ctx;
        arc4_setkey ( &ctx, key, keylen );
        arc4_xor ( &ctx, NULL, NULL, skip );
        arc4_xor ( &ctx, src, dst, msglen );
}

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Variable Documentation

struct cipher_algorithm arc4_algorithm

Definition at line 123 of file arc4.c.

Referenced by tkip_decrypt(), tkip_encrypt(), wep_decrypt(), and wep_encrypt().