TECHNIQUE FOR SECURING DATA FLOW IN INTERNET MULTICASTING

摘要

PROBLEM TO BE SOLVED: To secure data flow in multicast communications. SOLUTION: Multicast communications are expanded to include the concept of private multicasts. An address space dedicated to multicast is partitioned into a subspace for public multicasts and a subspace for private multicasts. A public key/private key encryption pair is used for private multicasts and installed on domain name servers or on certification authorities. Portions of a multicast join request are sent together with a corresponding encrypted version. Private multicast equipped routers receive the multicast join request, retrieve the public key from a domain name server or from a certification authority and decrypt the encrypted portion of the joint request to determine if the requester is authorized. COPYRIGHT: (C)2008,JPO&INPIT