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# declare a hash of array to prepare storage of all 
# variables to be encoded together
...
  my $encode = ST2614::encode($HoA, $ARGV[1]);
  print FILEHANDLE "$encode";
  close FILEHANDLE;

sitename1 loginid1 encoded_password1 url1
sitename2 loginid2 encoded_password2 url2
sitename3 loginid3 encoded_password3 url3

my $key = $ARGV[1] || 'secretkey';
my %HoA=();
...
  $HoA{$sitename} = [$id,$password,$url];
  # print "$sitename $id $password $url\n";
}

open OUT, '>','passmgr.dat'
   or die ("The file cannot be opened!");
...
  my $url = $HoA{$sitename}[2];
  print OUT join "\t",$sitename,$id,$enc_password,$url,"\n";
}