operation, the Earth launch facilities would have no need to communicate directly with the LEO or GEO bases, since space traffic control would coordinate departure and arrival traffic flows with the local traffic controllers at the launch site and at the orbital bases, as well as at individual power satellites. Communications which must be private can be provided by digitizing the messages and encrypting the digital stream by any one of a wide variety of algorithms, including some which are presently believed to be essentially unbreakable. 2.8 References 1. "Satellite Power System (SPS): Reference System Report," DOE/ER-0023, DOE/NASA, January 1979. 2. Martin E. Hellman, "The Mathematics of Public-Key Cryptography," Scientific American, pp. 146-157, August 1979.
RkJQdWJsaXNoZXIy MTU5NjU0Mg==