---
name: "File::KDBX::Cipher::Stream"
section: "3pm"
platform: "linux"
package: "libfile-kdbx-perl"
version: "0.906-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/File::KDBX::Cipher::Stream"
---

# File::KDBX::Cipher::Stream(3pm)

A cipher stream encrypter/decrypter

## NAME

File::KDBX::Cipher::Stream - A cipher stream encrypter/decrypter

## VERSION

version 0.906

## SYNOPSIS

```
    use File::KDBX::Cipher::Stream;
    my $cipher = File::KDBX::Cipher::Stream->new(algorithm => $algorithm, key => $key, iv => $iv);
```

## DESCRIPTION

A subclass of File::KDBX::Cipher for encrypting and decrypting data using a stream cipher.

## ATTRIBUTES

### counter

```
    $counter = $cipher->counter;
```

Get the initial counter / block count into the keystream.

### offset

```
    $offset = $cipher->offset;
```

Get the initial byte offset into the keystream. This has precedence over "counter" if both are set.

## METHODS

### crypt

```
    $ciphertext = $cipher->crypt($plaintext);
    $plaintext = $cipher->crypt($ciphertext);
```

Encrypt or decrypt some data. These ciphers are symmetric, so encryption and decryption are the same operation. This method is an alias for both "encrypt" in File::KDBX::Cipher and "decrypt" in File::KDBX::Cipher.

### keystream

```
    $stream = $cipher->keystream;
```

Access the keystream.

### dup

```
    $cipher_copy = $cipher->dup(%attributes);
```

Get a copy of an existing cipher with the counter reset, optionally applying new attributes.

## BUGS

Please report any bugs or feature requests on the bugtracker website \<https://github.com/chazmcgarvey/File-KDBX/issues\>

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

## AUTHOR

Charles McGarvey \<ccm@cpan.org\>

## COPYRIGHT AND LICENSE

This software is copyright (c) 2022 by Charles McGarvey.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.