Patent ID: 8380984
Filing Date: 2013-02-19
Classification: G06F,H04L

Abstract:
1. A communication device for conjointly computing a cryptographic key and including a component in said cryptographic Key for authenticating said cryptographic key, said cryptographic Key to be shared with a second communication device communicating with said communication device using a cryptographic system, said communication device comprising a processor configured to: obtain a certificate corresponding to public key information of said second communication device; compute said cryptographic key by combining said public, key information of said second communication device and private key information of said communication device; and include in said cryptographic key, said component corresponding to verification of said certificate, such that failure of said certificate to verify results in a key at said communication device that is different to the key computed at said second communication device, said verification utilizing a signature contained in said certificate, and said component equating to a value when said certificate verifies.