Exhibit | Aug. 4, 2021


This device is used for command authentication and decryption of space communications, typically within satellites. It was NSA's first try to meet NASA's size, weight, and power (SWAP) restrictions by introducing integrated circuit technology. It was employed very early on (1968). In the early days the Air Force was having a problem with the Satellite Control Facility (SCF). Each Satellite Program Office built satellites using their own frequencies, modulation, and data formats. This caused the SCF to install unique ground hardware and software to support each program. To solve this problem, the Air Force started to standardize the communications interface from the ground stations to all their satellites. NSA assisted the U.S. Air Force by developing "Security Modules" for these communications links. Thus began the development of the KG-29 systems.