HYBRID NON-REPUDIATION PROTOCOL WITH ALL TYPES OF PAIRINGS

Yıl 2016, Cilt: 12 Sayı: 1, 33 - 50, 24.04.2016

Yusuf Kavurucu Ömer Sever

Öz

As a solution to fair exchange problem, non-repudiation protocols are
being widely used over digital environment. Applications of non-repudiation
protocols are spreaded over Electronic Contract Signing, Certified E-mail,
electronic payment and e-commerce. In this paper we present a strong fair
hybrid non-repudiation protocol which works with all types of pairings. The
protocol is modeled with an on-line TTP in the first round and then works
optimistic in next rounds. The protocol offers stronger security by integration
of Joux tri-partite key exchange and uses certificateless ID based signature
and encryption methods. All the cryptographic methods used in the protocol are
based on pairing based cryptography which can be implemented on all three types
of pairings. 

Anahtar Kelimeler

Crytography, Non-repudiation, Security, Digiral signature