Efficient constructions of certificate-based key encapsulation mechanism. (1st January 2014)

• Record Type: Journal Article
• Authors: Lu, Yang; Li, Jiguo
• Is Part Of: International journal of internet protocol technology. Volume 8:Number 2/3(2014)
• Page Start: 96
• Page End: 106
• Publication Date: 2014-01-01
• Subjects: certificate-based encryption -- key encapsulation mechanism -- random oracle model -- chosen-ciphertext security -- standard model; File Transfer Protocol (Computer network protocol) -- Periodicals; Multicasting (Computer networks) -- Periodicals; 004.678
• Languages: English
• ISSNs: 1743-8209

Abstract

Certificate-based encryption is a useful primitive that combines identity-based encryption and traditional public key encryption while preserving some of their most attractive features. It not only simplifies the cumbersome certificate management in traditional public key encryption, but also overcomes the key escrow and distribution problems inherent in identity-based encryption. In this paper, we extend the concept of key encapsulation mechanism to the primitive of certificate-based encryption and introduce the notion of certificate-based key encapsulation mechanism. We propose two provably secure certificate-based key encapsulation mechanism schemes. We prove that one is chosen-ciphertext secure in the random oracle model and the other is chosen-ciphertext secure in the standard model. Performance analysis shows that the proposed schemes are quite efficient and practical.