Method for point-to-point communications within secure...

Method for secure communication

Method for synchronizing code machines which are operated...

Method for the interference-resistant transmission of...

Method for transmitting information using chaotic signals

Method for transposing the frequency of sub-bands

Method for transpoting sub-bands

Method of and apparatus for interception-protected...

Method of and apparatus for transmitting clandestine radio...

Method of and system for safeguarded transmission of digital...

Method of confirming user in modem communications and its...

Method of distributing and utilizing enciphering keys

Method of protecting proprietary rights in works of authorship

Method of recognizing the unauthorized use of an identification

Method of reducing the effect of narrowband jammers in radio...

Methods and apparatus for interfacing an encryption module...

Military communications system

Military radar - or radio communications transmission system

Multi-layer encryption system for the broadcast of encrypted...

Multiple access coding for radio communications