Facilitating secure communications in a distribution network

Details Facilitating secure communications in a distribution network Facilitating secure communications in a distribution network

1996-01-19

1999-02-09

Hayes, Gail O.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 23, 380 49, H04L 900

Patent

active

058704752

ABSTRACT:
In a hybrid fiber-coax distribution network, communications between a central station and particular end stations are encrypted using a working key (WK) of a symmetric encryption scheme. The central station has a public and private key (PPK) of a PPK encryption scheme, and some of the end stations can also each have a respective PPK. To provide secure communications for each end station, if the end station has a PPK, then the respective WK is generated in the central station and communicated, encrypted using the end station's public key (PK), to the end station. Otherwise, the WK is generated in the end station and communicated, encrypted using the central station's PK, to the central station. An individual identifier for each end station, and a cryptographic signature at least for end stations not having a PPK, can be communicated to the central station for authentication of the end stations.

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Bruce Shneier, "Applied Cryptology: Protocols, Algorithms, and Source Code in C", 1st edition John Wiley and Sons, N.Y. (1992).

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