A special authentication procedure protects against potential spoofing attacks. If preferred, secret keys may also be generated by the built-in true random noise generator and loaded into a Security Module for distribution to the partner station. Finally, keys may even be manually entered. Key sizes, both for Master Keys and Session Keys, are 128 bit. This key size provides highest, military grade security and renders any known attack infeasible.
Cryptographic keys are under exclusive control of the user alone.
The 3-DES algorithm is available as an alternative to those who prefer a well established standard. This is important for financial institutions and corporations who require protection well into the next century for their transnational networks. Such networks may require the export of encryptors into dozens of different countries. The Session Keys are generated in a way which positively rejects any repeated use of these keys. This feature prevents the so called midnight attack, where actual equipment is illegally accessed to decrypt a previously recorded message.