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 9#ifndef CHACHA_H 10#define CHACHA_H 11 12#include <sys/types.h> 13#include <crypto/chacha20/_chacha.h> 14 15#define CHACHA_MINKEYLEN 16 16#define CHACHA_NONCELEN 8 17#define CHACHA_CTRLEN 8 18#define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN) 19#define CHACHA_BLOCKLEN 64 20 21#ifdef CHACHA_EMBED 22#define LOCAL static 23#else 24#define LOCAL 25#endif 26 27#ifdef CHACHA_NONCE0_CTR128 28#define CHACHA_UNUSED __unused 29#else 30#define CHACHA_UNUSED 31#endif 32 33LOCAL void chacha_keysetup(struct chacha_ctx *x, const u_char *k, u_int kbits); 34LOCAL void chacha_ivsetup(struct chacha_ctx *x, const u_char *iv CHACHA_UNUSED, 35 const u_char *ctr); 36LOCAL void chacha_encrypt_bytes(struct chacha_ctx *x, const u_char *m, 37 u_char *c, u_int bytes); 38 39#undef CHACHA_UNUSED 40 41#endif /* CHACHA_H */ 42 43