System and method for securing calls between endpoints

Details System and method for securing calls between endpoints System and method for securing calls between endpoints

2005-02-14

2011-12-27

Abrishamkar, Kaveh (Department: 2431)

Cryptography

Key management

Key distribution

C380S259000, C380S281000, C713S168000

Reexamination Certificate

active

08085937

ABSTRACT:
According to one embodiment of the present invention, a method of establishing a secure call includes generating a session key at a centralized location. The session key is encrypted with a first public key and transmitted from the centralized location to a first endpoint. The session key is additionally encrypted with a second public key and transmitted from the centralized location to a second endpoint. The centralized location is at a location other than a location of the first endpoint and the second endpoint. The session key is operable to encrypt the call between the first endpoint and the second endpoint.

REFERENCES:
patent: 5537475 (1996-07-01), Micali
patent: 5557678 (1996-09-01), Ganesan
patent: 5590199 (1996-12-01), Krajewski et al.
patent: 7099620 (2006-08-01), Miller
patent: 2003/0031165 (2003-02-01), O'Brien, Jr.
patent: 2003/0046539 (2003-03-01), Negawa
Bishop, Matt, Computer Security; 2003; Addison-Wesley; Chapter 12.

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