Encryption and digital signature details and when introduced to PPT

M

Mitch Gallant

When was password-based encryption and digital signature capability
introduced to PPT? (what is minimum version that supports that)
Are there good articles discussing the digital signature embedding in ppt?
and encryption layout?

- Mitch Gallant
www.jensign.com
 
J

John Wilson

Ability to password files came with xp/2002. Passworded files will not open
in earlier versions.
 
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