Certificateless Proxy Signature from RSA

Lunzhi Deng,Yunyun Qu,Jiwen Zeng

doi:10.1155/2014/373690

Lunzhi Deng, Yunyun Qu + Show 1 more

Open Access

https://doi.org/10.1155/2014/373690

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Abstract

Although some good results were achieved in speeding up the computation of pairing function in recent years, it is still interesting to design efficient cryptosystems with less bilinear pairing operation. A proxy signature scheme allows a proxy signer to sign messages on behalf of an original signer within a given context. We propose a certificateless proxy signature (CLPS) scheme from RSA and prove its security under the strongest security model where the Type I/II adversary is a super Type I/II adversary.

Highlights

Public key cryptography is an important technique to realize network and information security
Since the appearance of this work, a lot of cryptography schemes have been proposed for encryption, signature, key agreement, and so forth and they all employ such bilinear pairings
We propose a certificateless proxy signature (CLPS) scheme, which has the following features

Summary

Introduction

Public key cryptography is an important technique to realize network and information security. Certificateless cryptography eliminates the key escrow property and removes certificates It lets a semitrusted KGC issue a user partial key to a user with respect to his/her identity. Since the appearance of this work, a lot of cryptography schemes have been proposed for encryption, signature, key agreement, and so forth and they all employ such bilinear pairings. Proxy signatures generated by using proxy private key are different from the original signers standard signatures, the proxy signer is not limited on the range of messages he can sign This weakness is eliminated in delegation by warrant schemes. People proposed many new ID-based proxy signature (IBPS) schemes [17–31] and certificateless proxy signature (CLPS) [32–38] schemes. To the best of authors’ knowledge, our scheme is the first certificateless proxy signature scheme from RSA

Preliminaries

Security Results of Scheme 1

Efficiency

Conclusion