CONTKEY *ckey;
    ckey=malloc(sizeof(CONTKEY));
    memcpy(ckey,globalinfo.content_key,sizeof(CONTKEY));
    if ((data = malloc(packetlen)) == NULL)
        error_exit("Memory allocation failed in handle_packet.");

    pos=ftell(fp);
    //fprintf(stderr, "POS: 0x%08X\n",pos);
    if (fread(data, packetlen, 1, fp) != 1)
        goto exit;
    memcpy(globalinfo.content_key,ckey,sizeof(CONTKEY));
    free(ckey);