Authenticated public-key distribution over WLAN/cellular dual networks

Public-key cryptosystems are characterized by the use of two keys, one held privately and the other available publicly. The main concern in a public-key setting is the authenticity of the public key. This authentication problem is typically resolved by the use of verifiable information called certificate, which is issued by a trusted third party and consists of the user name and his public key. The integrated WLAN/cellular networks enable simultaneous access to both cellular network and wireless LAN. This paper proposes a certificate-free public-key distribution scheme over WLAN/cellular dual networks.