Satellite communication system and method with message authentic

Details Satellite communication system and method with message authentic Satellite communication system and method with message authentic

1985-05-20

1989-08-22

Cangialosi, Salvalore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

342357, 342450, 342457, 34082534, 455 5, 455 12, 364408, 364449, H04K 900

Patent

active

048603520

ABSTRACT:
A satellite communications system apparatus and method for authenticating data transmissions uses the position of the transmitter, which position is determined by the satellite communications system. The transmitter position information is appended to the message (which can be either clear text or encrypted), which is sent to the receiver at a second location by the satellite system. A receiver can then authenticate the received message by comparing the received transmitter position with stored transmitter position information. The mobile transceiver syncing versions of the present invention allow the transceiver to be mobile, as opposed to being stationary. In this mobile version, each succeeding message is encrypted using the previous position of the mobile transceiver. Examples of transceivers implementing the apparatus and method of the present invention are shown, as are the specific vertical market applications of financial networks and automatic weather observation and reporting systems. In each version of the present invention, the determination of the location of the transmitter for each message that is received introduces an independently verifiable authentication parameter.

REFERENCES:
patent: 3906204 (1975-09-01), Rigdon et al.
patent: 4077005 (1978-02-01), Bishop
patent: 4359733 (1982-11-01), O'Neill
patent: 4418425 (1983-11-01), Fennel, Jr. et al.
patent: 4423287 (1983-12-01), Zeidler
patent: 4531021 (1985-07-01), Bluestein et al.
patent: 4531023 (1985-07-01), Levine

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