Method and apparatus for encrypted communication in data network

Details Method and apparatus for encrypted communication in data network Method and apparatus for encrypted communication in data network

1994-02-23

1995-12-26

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

380 23, 380 25, 380 48, H04L 902, H04K 100

Patent

active

054795141

ABSTRACT:
A secure network data communication technique that allows the designation of selected network nodes to share encryption keys with other selected network nodes. A message originating node determines nodes along a message route with which it shares encryption keys. One of these keys is selected and a message is encrypted with the key. The identity of the originating node and the decrypting node that also knows the selected key is added to the encrypted message in clear form. The decrypting node receives the message, recognizes its identity in the message and decrypts the message using the key shared with the originating node. If it is also not the destination node, it repeats the process of selecting a new encrypting node with which it shares a key, re-encrypting and transmitting re-encrypted message toward the destination.

REFERENCES:
patent: 4423287 (1983-12-01), Zeidler
patent: 4638356 (1987-01-01), Frezza
patent: 4914571 (1990-04-01), Baratz et al.
patent: 5210794 (1993-05-01), Brunsgard
patent: 5319710 (1994-06-01), Atalla et al.
patent: 5386471 (1995-01-01), Bianco
patent: 5416842 (1995-05-01), Aziz
IBM Manual SC 30-3269-3; 1985; "Systems Network Architecture Format and Protocol Reference Manual: Architecture Logic for LU Type 6.2".

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