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P5-crypt-hce_sha

May 26, 2018

Perl5 interface to one way hash chaining block cipher

 This module implements a chaining block cipher using a one
 way hash.  This method of encryption is the same that is
 used by radius RFC2138 and is also described in Applied
 Cryptography.

 Two interfaces are provided in the module.  The first is
 straight block encryption/decryption the second does base64
 mime encoding/decoding of the encrypted/decrypted blocks.

 The idea is that the two sides have a shared secret that
 supplies one of the keys and a randomly generated block of
 bytes provides the second key.  The random key is passed in
 cleartext between the two sides.

 An example client and server are packaged as modules with
 this module.  They are used in the tests.