Method for connection of secure conference calls

Details Method for connection of secure conference calls Method for connection of secure conference calls

1988-07-18

1990-04-24

Cangialosi, Salvatore

Cryptography

Cryptanalysis

380 9, 380 33, H04L 904

Patent

active

049205650

ABSTRACT:
The present invention provides a method and apparatus of making secure conference calls in which the bridging unit does not need to know any encryption keys and can function independently of the encryption process used by the communicating parties. This means that there is no security requirement for the conference unit, there are fewer restrictions on where it can be placed, and it does not introduce any additional weaknesses in the security system.

REFERENCES:
patent: 1852727 (1932-04-01), van der Horst
patent: 2586475 (1952-02-01), Milliquet
patent: 3054857 (1962-09-01), Weiss
patent: 3089921 (1963-05-01), Hines
patent: 3204034 (1965-08-01), Ballard et al.
patent: 4802220 (1989-01-01), Marker, Jr.
patent: 4805216 (1989-02-01), Gruenberg
patent: 4815128 (1989-02-01), Malek
patent: 4845749 (1989-07-01), Brickell et al.

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