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This Module decrypts all kind of Cisco encrypted hashes also referred to as type 7 passwords. Further you can encrypt any given string into a encrypted hash that will be accepted by any Cisco device as an encrypted type 7 password.

Anubis is a variable-length key, 128-bit block cipher designed by Vincent Rijmen and Paulo S. L. M. Barreto. Anubis was submitted as a NESSIE candidate. Key length can be 128, 160, 192, 224, 256, 288, or 320 bits. The default key length in this implementation is 128 bits.

Eksblowfish is a variant of the Blowfish cipher, modified to make the key setup very expensive. ("Eks" stands for "expensive key schedule".) This doesn't make it significantly cryptographically stronger, but is intended to hinder brute-force attacks. It also makes it unsuitable for any application requiring key agility. It was designed by Niels Provos and David Mazieres for password hashing in OpenBSD. Eksblowfish is a parameterised (family-keyed) cipher. It takes a cost parameter that controls how expensive the key scheduling is. It also takes a family key, known as the "salt". Cost and salt parameters together define a cipher family. Within each family, a key determines an encryption function in the usual way. This distribution also includes an implementation of "bcrypt", the Unix crypt() password hashing algorithm based on Eksblowfish.

Conversion utilities for encryption applications

This module provides an implementation of the CAST5 block cipher using compiled C code for increased speed. CAST5 is also known as CAST-128. It is a product of the CAST design procedure developed by C. Adams and S. Tavares.

This is Crypt::CBC, a Perl-only implementation of the cryptographic cipher block chaining mode (CBC). In combination with a block cipher such as DES or IDEA, you can encrypt and decrypt messages of arbitrarily long length. The encrypted messages are compatible with the encryption format used by the OpenSSL package.

Crypt::GCrypt provides an object interface to the C libgcrypt library. It currently supports symmetric encryption/decryption and message digests, while asymmetric cryptography is being worked on.

Generic CFB implementation in pure Perl. The Cipher Feedback Mode module constructs a stream cipher from a block cipher or cryptographic hash funtion and returns it as an object. Any block cipher in the Crypt:: class can be used, as long as it supports the blocksize and keysize methods. Any hash function in the Digest:: class can be used, as long as it supports the add method.

Crypt::Caesar - Decrypt rot-N strings

The Chimera key exchange protocol generates a shared key between two parties. The protocol was shown to be INSECURE. This module is therefore released for purely academic curiosity.