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IBM Workplace Forms: Guide to Building and Integrating a Sample Workplace Forms Application
book

IBM Workplace Forms: Guide to Building and Integrating a Sample Workplace Forms Application

by Bernd Beilke, Cayce Marston, Kioko Mwosa, George Poirier, Andreas A. Richter, Deanna Drschiwiski, John Bergland, Yves Bollanga
July 2006
Intermediate to advanced content levelIntermediate to advanced
356 pages
10h 31m
English
IBM Redbooks
Content preview from IBM Workplace Forms: Guide to Building and Integrating a Sample Workplace Forms Application
Chapter 4. Building the base scenario: Stage 1 97
4.6.4 Adding Signature buttons
Digital signatures have two purposes:
򐂰 Identifying signers:
Digital signatures affix the signer’s name and e-mail address to the document.
򐂰 Secure documents:
Digital signatures use encryption algorithms and digital certificates to guarantee form
security.
When users sign a document, a “snapshot” of the document is taken and hashed to produce
a unique number representing your document. If the document changes, hashing produces a
different number. As a result, you can think of a hash as a document’s digital fingerprint,
unique and unmistakable.
In other words, once users have signed a form, any alterations to the signed portion of the
form breaks the signature. F
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Publisher Resources

ISBN: 0738495603Purchase book