1
Lin nan Lee, Russell J Fang: Security system for SSTV encryption. Communications Satellite Corporation, Sughrue Mion Zinn Macpeak & Seas, November 20, 1984: US04484027 (169 worldwide citation)

In a secure communications system, a key number which is changed periodically, e.g. monthly, and a random number from a random number generator are combined and used as a seed to reset a PN sequence generator, with the output of the generator being used to control encryption of transmission data in ...


2
Silvio Micali: Method for certifying public keys in a digital signature scheme. David H Judson, May 30, 1995: US05420927 (126 worldwide citation)

A method for certifying public keys of a digital signature scheme in a secure communications system is provided. The secure communications system in one in which there are authorities with previously-certified public verification keys. The method begins by having a user U present an authority a veri ...


3
Amit Kleinman, Shlomo Kipnis: Secure communications system. NDS, Ladas & Parry, September 30, 2003: US06629243 (120 worldwide citation)

A key distribution method for distributing, via a communications network, a key in a multicast communications system in which each one of a plurality of communications is directed to an associated multicast group including a plurality of recipients intended to receive the one communication. The meth ...


4
Charles R Otey, Burton C Winkler Jr: Secure communications system. Sanders Associates, Richard I Seligman, Louis Etlinger, October 16, 1979: US04171513 (116 worldwide citation)

A privacy communication system is herein disclosed comprising apparatus for digitizing information to be transmitted, apparatus for logically adding a selected pseudo-random digital code to the digitized information, apparatus for removing the pseudo-random code upon reception and apparatus for sync ...


5
Silvio Micali: Method for certifying public keys in a digital signature scheme. Foley Hoag & Eliot, February 18, 1997: US05604804 (106 worldwide citation)

A method for certifying public keys of a digital signature scheme in a communications system is provided. The secure communications system is one in which there are at least two levels of authorities. A user presents a piece of data to an intermediate level authority who, upon verifying the data, ca ...


6
Victor S Leith, James V Stevens: Secure communications system for remotely located computers. International Business Machines Corporation, A P Tennent, March 23, 1993: US05196840 (100 worldwide citation)

A system for determining when a remote computer user is authorized to communicate with a host computer and to establish a ciphering key to be used for the communications session. A random number is generated at the host computer, ciphered under the user's PIN, and sent to the remote user where it is ...


7
Min Zhu, Xuan Zhang: Secure communications system for collaborative computing. Webex Communications, Sidley Austin Brown & Wood, May 31, 2005: US06901448 (92 worldwide citation)

A method of distributed collaborative computing is provided. The method includes: partitioning a collaboration function into sub-functions; assigning at least one said sub-function to each of a plurality of logical processes; associating a respective management process with each of said plurality of ...


8
Paul C Van Oorschot: Method and apparatus for creating communities of trust in a secure communication system. Entrust Technologies, Markison & Reckamp P C, October 17, 2000: US06134327 (86 worldwide citation)

A method and apparatus for creating communities of trust within a secure communications system is accomplished by allowing end-users to obtain arbitrary lists of trusted public keys from other end-users and from associated authorities. Once an arbitrary list has been obtained by an end-user, the end ...


9
Lvov Denis Ernestovich: Electronic game system, a method of managing and regulating said system. Lvov Denis Ernestovich, May 20, 1998: EP0843272-A1 (82 worldwide citation)

The electronic gaming system (ESG) and the method of system control and adjustment relates to computerized gaming and service systems that implement a computerized programmable control and can be used in local and global networks to establish casinos. The EGS consists of a central computer station ( ...


10
Bryan Colvin Sr: Centralized secure communications system. Allsoft Distributing Incorporated, McCutchen Doyle Brown & Enersen, March 21, 2000: US06041123 (81 worldwide citation)

A system of secure communications between multiple parties. This system uses an index/secure key combination for each party. The index key never changes its value. A secured central router with access to a master database uses index keys to look up corresponding secure keys in the master database. T ...