#include <arc4.h>
#include <stdlib.h>

#include "algs.h"

typedef struct arc4state ARC4STATE;

struct arc4state {
  ARC4_STATE s;
  } ;

static void *enc_arcfour_init(const void *key, const void *iv __attribute__((__unused__)))
{
 ARC4STATE *s;

 s = malloc(sizeof(ARC4STATE));
 if (s == 0) return(0);
 arc4_init(&s->s);
 arc4_setkey(&s->s,key,16,0);
 return(s);
}

static void enc_arcfour_process(void *state, const void *in, void *out, int datalen)
{
 ARC4STATE *s;

 s = state;
 arc4_crypt(&s->s,in,datalen,out);
}

static void enc_arcfour_done(void *state)
{
 free(state);
}

ENCALG encalg_arcfour
 = { "arcfour", 1, 0, 16,
     &enc_arcfour_init, &enc_arcfour_init,
     &enc_arcfour_process,
     &enc_arcfour_done };