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For your convenience, you can call the encrypt() and decrypt() methods to operate on a whole data value at once. You will then call the start() method to initialize the encryption or decryption process, crypt() to encrypt or decrypt one or more blocks of data, and lastly finish(), to pad and encrypt the final block. At the time of cipher creation, you specify an encryption key to use and, optionally, a block encryption algorithm. To use this module, you will first create a Crypt::CBC cipher object with new(). The encrypted messages are compatible with the encryption format used by the OpenSSL package. In combination with a block cipher such as AES or Blowfish, you can encrypt and decrypt messages of arbitrarily long length.

This module is a Perl-only implementation of the cryptographic cipher block chaining mode (CBC). $fh = Crypt::CBC->filehandle(-pass => 'secret') # encrypting via a filehandle (requires Crypt::FileHandle> $cipher = Crypt::CBC->new(-pbkdf => 'none', $key = Crypt::CBC->random_bytes(8) # assuming a 8-byte block cipher # do-it-yourself mode - specify key & initialization vector yourself $plaintext = $cipher->decrypt($ciphertext) $ciphertext = $cipher->encrypt("This data is hush hush") $cipher = Crypt::CBC->new( -pass => 'my secret password', cipher(), pbkdf(), padding(), keysize(), blocksize(), chain_mode()Ĭrypt::CBC - Encrypt Data with Cipher Block Chaining Mode SYNOPSIS use Crypt::CBC.