File Coverage

blib/lib/File/KDBX/Cipher/CBC.pm

Criterion	Covered	Total	%
statement	39	44	88.6
branch	3	10	30.0
condition	3	9	33.3
subroutine	9	12	75.0
pod	6	6	100.0
total	60	81	74.0

package File::KDBX::Cipher::CBC;
# ABSTRACT: A CBC block cipher mode encrypter/decrypter

use warnings;
use strict;

use Crypt::Mode::CBC;
use File::KDBX::Error;
use File::KDBX::Util qw(:class);
use namespace::clean;

extends 'File::KDBX::Cipher';

our $VERSION = '0.904'; # VERSION

has key_size => 32;
sub iv_size     { 16 }
sub block_size  { 16 }

sub encrypt {
    my $self = shift;

    my $mode = $self->{mode} ||= do {
        my $m = Crypt::Mode::CBC->new($self->algorithm);
        $m->start_encrypt($self->key, $self->iv);
        $m;
    };

    return join('', map { $mode->add(ref $_ ? $$_ : $_) } grep { defined } @_);
}

sub decrypt {
    my $self = shift;

    my $mode = $self->{mode} ||= do {
        my $m = Crypt::Mode::CBC->new($self->algorithm);
        $m->start_decrypt($self->key, $self->iv);
        $m;
    };

    return join('', map { $mode->add(ref $_ ? $$_ : $_) } grep { defined } @_);
}

sub finish {
    my $self = shift;
    return '' if !$self->{mode};
    my $out = $self->{mode}->finish;
    delete $self->{mode};
    return $out;
}

1;

__END__