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				/* $OpenBSD: chacha.h,v 1.4 2016/08/27 04:04:56 guenther Exp $ */
				markmAuthorUnsubmitted Not Done Inline Actions This whole file was copied from src/crypto/openssh/... markm: This whole file was copied from src/crypto/openssh/...

				/*
				chacha-merged.c version 20080118
				D. J. Bernstein
				Public domain.
				*/

				#ifndef CHACHA_H
				#define CHACHA_H

				#include <sys/types.h>

				struct chacha_ctx {
				u_int input[16];
				};

				#define CHACHA_MINKEYLEN 16
				#define CHACHA_NONCELEN 8
				#define CHACHA_CTRLEN 8
				#define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN)
				#define CHACHA_BLOCKLEN 64

				void chacha_keysetup(struct chacha_ctx x, const u_char k, u_int kbits)
				__attribute__((__bounded__(__minbytes__, 2, CHACHA_MINKEYLEN)));
				void chacha_ivsetup(struct chacha_ctx x, const u_char iv, const u_char *ctr)
				__attribute__((__bounded__(__minbytes__, 2, CHACHA_NONCELEN)))
				__attribute__((__bounded__(__minbytes__, 3, CHACHA_CTRLEN)));
				void chacha_encrypt_bytes(struct chacha_ctx x, const u_char m,
				u_char *c, u_int bytes)
				__attribute__((__bounded__(__buffer__, 2, 4)))
				__attribute__((__bounded__(__buffer__, 3, 4)));

				#endif /* CHACHA_H */