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Software components for data protection, secure storage and transfer

Encrypt & Sign/Timestamp PDF in single operation

Also by EldoS: CallbackFilter
A component to monitor and control disk activity, track file and directory operations (create, read, write, rename etc.), alter file data, encrypt files, create virtual files.
#8648
Posted: 01/16/2009 10:44:30
by Dan Saul (Standard support level)
Joined: 07/23/2008
Posts: 17

Hi,

Is it possible to digitally sign and timestamp a PDF file with a certificate and also encrypt it with a password at the same time so that when you open the PDF using the password it doesn't have any changes/revisions listed since the digital signature was added?

Thanks,

Dan
#8650
Posted: 01/16/2009 11:35:57
by Eugene Mayevski (Team)

Did you try SignAndEncrypt method of TElPDFDocument?
#8652
Posted: 01/16/2009 12:20:48
by Dan Saul (Standard support level)
Joined: 07/23/2008
Posts: 17

I can't seem to find this in the VB/ASP.NET samples. Where is it located?

Also, does it allow me to set a password and can it utilize the HandleTimestampNeeded event - which is how I am currently timestamping the PDF and applying the certificate?

Dan
#8653
Posted: 01/16/2009 12:41:50
by Dmytro Bogatskyy (Team)

Quote
I can't seem to find this in the VB/ASP.NET samples. Where is it located?

Please, see PDFBlackbox\SecurePDF sample
Quote
Also, does it allow me to set a password and can it utilize the HandleTimestampNeeded event - which is how I am currently timestamping the PDF and applying the certificate?

It is no need to change your code for creating signature.
You only need to set EncryptionHandler property and call SignAndEncrypt method.
#8657
Posted: 01/16/2009 13:17:59
by Dan Saul (Standard support level)
Joined: 07/23/2008
Posts: 17

Great. Thank you, I'll try this out.
Also by EldoS: Callback File System
Create virtual file systems and disks, expose and manage remote data as if they were files on the local disk.

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