#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{	RC4state state;}; static CipherState*initrc4(Conn *c, int dir){	CipherState *cs; 	cs = emalloc9p(sizeof(CipherState));	if(dir)		setupRC4state(&cs->state, c->s2cek, 16);	else		setupRC4state(&cs->state, c->c2sek, 16);	return cs;} static voidencryptrc4(CipherState *cs, uchar *buf, int nbuf){	rc4(&cs->state, buf, nbuf);} static voiddecryptrc4(CipherState *cs, uchar *buf, int nbuf){	rc4(&cs->state, buf, nbuf);} Cipher cipherrc4 ={	"arcfour",	8,	initrc4,	encryptrc4,	decryptrc4,};