libcrypt-hcesha-perl - 0.75-3 main

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.
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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.
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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.
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An example client and server are packaged as modules with this module. They
are used in the tests. They can be found in the examples directory.