1/* $OpenBSD: chacha.h,v 1.4 2016/08/27 04:04:56 guenther Exp $ */
2
3/*
4chacha-merged.c version 20080118
5D. J. Bernstein
6Public domain.
7
8 $FreeBSD$
9*/
10
11#ifndef CHACHA_H
12#define CHACHA_H
13
14#include <sys/types.h>
15
16struct chacha_ctx {
17	u_int input[16];
18};
19
20#define CHACHA_MINKEYLEN 	16
21#define CHACHA_NONCELEN		8
22#define CHACHA_CTRLEN		8
23#define CHACHA_STATELEN		(CHACHA_NONCELEN+CHACHA_CTRLEN)
24#define CHACHA_BLOCKLEN		64
25
26#ifdef _KERNEL
27#define LOCAL
28#else
29#define LOCAL static
30#endif
31
32LOCAL void chacha_keysetup(struct chacha_ctx *x, const u_char *k, u_int kbits);
33LOCAL void chacha_ivsetup(struct chacha_ctx *x, const u_char *iv, const u_char *ctr);
34LOCAL void chacha_encrypt_bytes(struct chacha_ctx *x, const u_char *m,
35    u_char *c, u_int bytes);
36
37#endif	/* CHACHA_H */
38
39