NAME

Crypt::Cipher::Blowfish - Symetric cipher Blowfish, key size: 64-448 bits (Crypt::CBC compliant)

SYNOPSIS

  use Crypt::CBC;
  use Crypt::Cipher::Blowfish;
  
  my $key = '...'; # length has to be valid key size for this cipher
  my $cipher = Crypt::Cipher::Blowfish->new($key);
  my $cbc = Crypt::CBC->new( -cipher=>$cipher );
  my $ciphertext = $cbc->encrypt("secret data");

DESCRIPTION

This module implements the Blowfish cipher. Provided interface is compliant with Crypt::CBC 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::CBC.

METHODS

The OO interface provides the same set of functions as Crypt::Cipher.

new

 $c = Crypt::Cipher::Blowfish->new($key);
 #or
 $c = Crypt::Cipher::Blowfish->new($key, $rounds);

encrypt

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

decrypt

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

keysize

  $c->keysize;
  #or
  Crypt::Cipher::Blowfish->keysize;
  #or
  Crypt::Cipher::Blowfish::keysize;

blocksize

  $c->blocksize;
  #or
  Crypt::Cipher::Blowfish->blocksize;
  #or
  Crypt::Cipher::Blowfish::blocksize;

max_keysize

  $c->max_keysize;
  #or
  Crypt::Cipher::Blowfish->max_keysize;
  #or
  Crypt::Cipher::Blowfish::max_keysize;

min_keysize

  $c->min_keysize;
  #or
  Crypt::Cipher::Blowfish->min_keysize;
  #or
  Crypt::Cipher::Blowfish::min_keysize;

default_rounds

  $c->default_rounds;
  #or
  Crypt::Cipher::Blowfish->default_rounds;
  #or
  Crypt::Cipher::Blowfish::default_rounds;

SEE ALSO

CryptX, Crypt::Cipher

http://en.wikipedia.org/wiki/Blowfish_(cipher)