Patent Number: 6,480,608

Title: Method for exchanging cryptographic keys in an ATM network using multiple virtual paths or circuits

Abstract: In an Asynchronous Transfer Mode telecommunications network having a plurality of virtual paths or circuits, an encryption key used for data transmitted between a source and a receiver may be updated, the data being transmitted initially using a first encryption key by a first of the plurality of virtual paths or circuits, by a connection being estabished by a second of the plurality of virtual paths or circuits and sending a second encryption key by that connection from the source to the receiver and subsequently transmitting the data using the second encryption key by the second of the plurality of virtual paths or circuits.

Inventors: Proctor; Richard J (Corfe Mullen, GB)

Assignee: Marconi Communications Limited

International Classification: H04Q 11/04 (20060101); H04L 9/08 (20060101); H04L 12/56 (20060101); H04L 009/00 (); H04K 001/10 ()

Expiration Date: 11/12/2019