On the validity of digital signatures

An important feature of digital signatures is to serve as nonrepudiation evidence. To be eligible as non-repudiation evidence, a digital signature on an electronic document should remain valid until its expiry date which is speci ed by some non-repudiation policy. As signature keys may be compromised and the validity of signatures may become questionable, additional security mechanisms need to be imposed on digital signatures. This paper examines the mechanisms for maintaining the validity of digital signatures, and provides a guideline on the use of these mechanisms in various context of applications. Keywords digital signature, non-repudiation, secure electronic commerce

• Type: Journal
• Year: 2000
• Where: CCR
• Authors: Jianying Zhou, Robert H. Deng
• Keywords: Additional Security Mechanisms, CCR 2000, Digital Signature, Keywords Digital Signature