Cryptanalysis of Lin et al's efficient strong designated verifier proxy signature scheme for electronic commerce

Date of Publication

2015

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Mathematics with specialization in Business Applications

Subject Categories

Mathematics

College

College of Science

Department/Unit

Mathematics and Statistics

Thesis Adviser

Ederlina G. Nocon
Deneisha Tieng

Defense Panel Chair

Leonor A. Ruivivar

Defense Panel Member

Yvette F. Lim
Luisette C. Candelari

Abstract/Summary

Strong Designated Verifier Proxy Signature (SDVPS) Scheme is the combination of the proxy signature scheme and the designated verifier signature scheme. An SDVPS scheme enables the proxy signer, on behalf of the original signer, to sign a message. A designated verifier can only check the validity of the signature. Lin et al. proved that their scheme is resistant against existential forgery under adaptive chosen-message attacks (EF-CMA), Lin et al. (2012). However, Zhou showed in Attacks on a Strong Designated Verifier Proxy Signature Scheme , Zhou (2014a) that their scheme was insecure by giving four attacks and Zhou proposed an improvement on their scheme which he wrote in his paper Improvement on Lin et als Strong Designated Verifier Proxy Signature Scheme for Electronic Commerce, Zhou (2014b). In this paper, we show that the scheme can be forged by using Zhou's four attacks and our own contributed two attacks. Furthermore, we proposed an improvement for the scheme. Analysis shows that the improvement was resistant against the given six attacks.

Abstract Format

html

Language

English

Format

Electronic

Accession Number

CDTU021080

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

1 computer disc ; 4 3/4 in.

Keywords

Digital signatures; Data encryption (Computer science); Authentication; Computer science--Mathematics; Finite model theory

Embargo Period

5-11-2021

This document is currently not available here.

Share

COinS