Patent ID: 7352866
Filing Date: 2008-04-01
Classification: H04L,H04W

Abstract:
1. A method of a first correspondent authenticating a second correspondent in a communication system, said method comprising: said first correspondent exchanging cryptographic keys with said second correspondent based on a public key mutual authentication scheme, said mutual authentication comprising: said first correspondent transmitting a short term public key along with an identifier to said second correspondent to enable said second correspondent to combine its private key with said short term public key and generate a pair of shared secret keys therefrom wherein a first of said shared secret keys is used for said mutual authentication and a second of said shared secret keys is used for establishing a secret session key, said first correspondent using a short term private key and a public key of said second correspondent to generate said pair of shared secret keys, and said first correspondent using said second of said shared secret keys to establish said session key; and said first correspondent using said session key for encrypting data in a symmetric-key data exchange.