Authors:
Wang Lianhai
and
Manu Malek
Affiliation:
Stevens Institute of Technology, United States
Keyword(s):
Digital contract signature, digital signature, multisignature, concurrent signature, public key authentication.
Related
Ontology
Subjects/Areas/Topics:
Data Engineering
;
Data Management and Quality
;
Digital Rights Management
;
e-Commerce Protocols and Micropayment Schemes
;
Information and Systems Security
;
Information Assurance
;
Management of Computing Security
;
Security in Information Systems
;
Workflow and Business Process Security
Abstract:
This paper presents a new type of signature, contract digital signature, based on Discrete Logarithm(DL) and Elliptic Curve(EC) cryptosystems. Contract signature is similar to a real-life contract. No less than two signers take part in a contract signature. After introducing the concept and definition of contract signature, a scheme based on Discrete Logarithm (DL) and Elliptic Curve (EC) cryptosystems is presented. This scheme allows signers, whose ordinary signature schemes use many different cryptographic systems, to generate a single signature. The scheme requires neither a trusted arbitrator nor a high degree of interaction between signers. We then prove that this scheme is secure under the discrete logarithm assumption.