#include <u.h>#include <libc.h>#include <mp.h>#include <fcall.h>#include <thread.h>#include <9p.h>#include <libsec.h>#include "sshtun.h" struct CipherState{	DES3state state;}; static CipherState*init3des(Conn *c, int dir){	CipherState *cs;	uchar key[3][8]; 	cs = emalloc9p(sizeof(CipherState));	if(dir){		memmove(key, c->s2cek, 24);		setupDES3state(&cs->state, key, c->s2civ);	}	else{		memmove(key, c->c2sek, 24);		setupDES3state(&cs->state, key, c->c2siv);	}	return cs;} static voidencrypt3des(CipherState *cs, uchar *buf, int nbuf){	des3CBCencrypt(buf, nbuf, &cs->state);} static voiddecrypt3des(CipherState *cs, uchar *buf, int nbuf){	des3CBCdecrypt(buf, nbuf, &cs->state);} Cipher cipher3des ={	"3des-cbc",	8,	init3des,	encrypt3des,	decrypt3des,};