April 2006
Beginner
1114 pages
98h 16m
English
Content preview from Programming Excel with VBA and .NETBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Add Digital Signatures
A digital signature identifies the author of the content or the macros contained in a workbook, template, or add-in. You add a digital signature as the last step before you distribute a file. When others open a signed file, they can see who the author is and therefore decide whether the information in the file is authentic and whether any macros it contains are safe to run.
The signature is overwritten any time a file is saved. Therefore, no one can open a signed file, make changes, save, then send the file on still bearing your signature. Workbooks and macros are signed separately even though they are contained in a single file. If you want to distribute a signed workbook containing macros, you must sign the macros first, then sign the workbook.
See Chapter 6 for instructions on how to get a digital certificate and how to use it to sign files.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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