....
......
....
sub encrypt {

    my ($self, %params)   = @_;
    my $plaintext         = $params{Message} || $params{Plaintext};
    my $key               = $params{Key};

        print "\n$plaintext\n$key\n";
    return $self->error ($key->errstr, \%params, $key, \$plaintext)
        unless $key->check();
        print "\nAfter self error\n";
    my $blocksize = blocksize ( $$self{es}->encryptblock (Key => $key),
                                length($plaintext)
                              );
        print "\nAfter block size\n";
    return $self->error("Message too long.", \$key, \%params) if $blocksize <= 0;
        print "\nAfter self error\n";
    my $cyphertext;
....
....