# phpman > perldoc > Crypt::Cipher::KASUMI

## NAME
    [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown) - Symmetric cipher KASUMI, key size: 128 bits

## SYNOPSIS
      ### example 1
      use [Crypt::Mode::CBC](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AMode%3A%3ACBC/markdown);

      my $key = '...'; # length has to be valid key size for this cipher
      my $iv = '...';  # 16 bytes
      my $cbc = [Crypt::Mode::CBC](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AMode%3A%3ACBC/markdown)->new('KASUMI');
      my $ciphertext = $cbc->encrypt("secret data", $key, $iv);

      ### example 2 (slower)
      use [Crypt::CBC](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACBC/markdown);
      use [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown);

      my $key = '...'; # length has to be valid key size for this cipher
      my $iv = '...';  # 16 bytes
      my $cbc = [Crypt::CBC](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACBC/markdown)->new( -cipher=>'[Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Cipher%3A%3AKASUMI/markdown)', -key=>$key, -iv=>$iv );
      my $ciphertext = $cbc->encrypt("secret data");

## DESCRIPTION
    This module implements the KASUMI cipher. Provided interface is compliant with [Crypt::CBC](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACBC/markdown)
    module.

    BEWARE: This module implements just elementary "one-block-(en|de)cryption" operation - if you
    want to encrypt/decrypt generic data you have to use some of the cipher block modes - check for
    example [Crypt::Mode::CBC](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AMode%3A%3ACBC/markdown), [Crypt::Mode::CTR](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AMode%3A%3ACTR/markdown) or [Crypt::CBC](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACBC/markdown) (which will be slower).

## METHODS
  new
     $c = [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown)->new($key);
     #or
     $c = [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown)->new($key, $rounds);

  encrypt
     $ciphertext = $c->encrypt($plaintext);

  decrypt
     $plaintext = $c->decrypt($ciphertext);

  keysize
      $c->keysize;
      #or
      [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown)->keysize;
      #or
      [Crypt::Cipher::KASUMI::keysize](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI%3A%3Akeysize/markdown);

  blocksize
      $c->blocksize;
      #or
      [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown)->blocksize;
      #or
      [Crypt::Cipher::KASUMI::blocksize](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI%3A%3Ablocksize/markdown);

  max_keysize
      $c->max_keysize;
      #or
      [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown)->max_keysize;
      #or
      [Crypt::Cipher::KASUMI::max_keysize](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI%3A%3Amaxkeysize/markdown);

  min_keysize
      $c->min_keysize;
      #or
      [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown)->min_keysize;
      #or
      [Crypt::Cipher::KASUMI::min_keysize](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI%3A%3Aminkeysize/markdown);

  default_rounds
      $c->default_rounds;
      #or
      [Crypt::Cipher::KASUMI](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI/markdown)->default_rounds;
      #or
      [Crypt::Cipher::KASUMI::default_rounds](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher%3A%3AKASUMI%3A%3Adefaultrounds/markdown);

## SEE ALSO
    *   CryptX, [Crypt::Cipher](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3ACipher/markdown)

    *   <<https://en.wikipedia.org/wiki/KASUMI_>(block_cipher)>