Secure audit logs to support computer forensics
ACM Transactions on Information and System Security (TISSEC)
Secure History Preservation Through Timeline Entanglement
Proceedings of the 11th USENIX Security Symposium
Digital signatures and electronic documents: a cautionary tale
Proceedings of the IFIP TC6/TC11 Sixth Joint Working Conference on Communications and Multimedia Security: Advanced Communications and Multimedia Security
Content extraction signatures using XML digital signatures and custom transforms on-demand
WWW '03 Proceedings of the 12th international conference on World Wide Web
Authority Models for Collaborative Authoring
HICSS '04 Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 1 - Volume 1
Introduction to XML Encryption and XML Signature
Information Security Tech. Report
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The use of digital document management and processing is increasing. Traditional workflows of paper forms are being replaced by electronic workflows of digital documents. These workflows often require multiple signatures to be added to the documents for authorization and-or integrity. We describe examples of digital workflows that illustrate problems with digital signatures: i.e. the use of digital signatures across entire documents results in signatures that can be unnecessarily invalidated by subsequent modification of the document. We propose the use of fragment signatures, which reduce unnecessary invalidation of signatures and enable greater concurrency in workflows. Our approach is document-centric and does not use a centralized database. We report on an implementation that allows fragment signatures over document fragments as well as the attachment (or embedding) of other documents. This allows collaborative or cooperative editing to occur on parts of a document without disturbing unrelated signatures. We describe the lessons learned from our deployments and offer further ways to embed such signatures into other document types. Copyright © 2010 John Wiley & Sons, Ltd.