Patent ID: 8656158
Filing Date: 2014-02-18
Classification: H04L

Abstract:
1. A method in a generating host of generating a plurality of addresses for access multi-homing in an access network, wherein each address comprises a first address part and a second address part, said method comprising the steps of: obtaining from the network a plurality of first address parts corresponding to the plurality of addresses for access multi-homing in the access network, wherein each of the first address parts identifies the generating host's point of network attachment and the plurality of first address parts is a plurality of subnet prefixes; processing the plurality of first address parts to generate a single cryptographic second address part, wherein the single cryptographic second address part identifies the generating host at the generating host's point of network attachment; concatenating each of the plurality of first address parts with the single cryptographic second address part to generate the plurality of addresses, wherein the single cryptographic second address part is common to each of the plurality of addresses and defines an address set; and cryptographically binding the plurality of addresses with different subnet prefixes which enables hosts to prove ownership of a set of IP addresses to a correspondent host without relying on certification infrastructure, while also enabling routers to efficiently exchange IP addresses in the address set by rewriting only the IP addresses' prefixes, wherein the processing step includes processing each of the plurality of first address parts together with a random number utilizing a one-way hash function to create a cryptographic hash.