/* This file is in the public domain. */

#include <stdio.h>
#include <stdlib.h>
#include <strings.h>

#include "algs.h"
#include "config.h"
#include "keyfiles.h"
#include "stdio-util.h"
#include "priv-crypto.h"

#include "hostkey.h"

int read_host_key(HKALG *alg, void **pubdp, int *publp, void **privdp, int *privlp)
{
 char *t;
 HKALG *fa;
 void *pubd;
 int publ;
 void *privd;
 int privl;
 char *comm;
 FILE *ef;

 asprintf(&t,"%s/%s",config_str("host-key-dir"),alg->hkfile);
 ef = fopen_null();
 if (! load_key_pair(t,t,&pubd,&publ,&fa,&privd,&privl,&comm,0,ef))
  { fclose(ef);
    return(0);
  }
 fclose(ef);
 free(comm);
 if ( (fa != alg) ||
      !priv_unwrap(privd,privl,0,privdp,privlp,NO_PASSPHRASE) )
  { free(pubd);
    bzero(privd,privl);
    free(privd);
    return(0);
  }
 *pubdp = pubd;
 *publp = publ;
 return(1);
}