PDF saved to DB lost its Digital Signature

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SQL-Server-2005

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I have managed to upload and save a digitally signed PDF in a BLOB field in my SQL 2008 database. I go to view it and the signature is gone. Does anyone know why?

Posted 10-Jun-11 15:23pm

MT 2MB

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AspDotNetDev · Answer 1 · 2011-06-10T15:58:00

Solution 1

I am not sure what you mean by "signature", but I see two possibilities:

The signature is a file stored elsewhere on the hard drive. Perhaps an entry in a certificate store.
The signature is something that is stored in the ADS (alternate data stream) of the file.

Posted 10-Jun-11 15:58pm

AspDotNetDev

MT 2MB · Answer 2 · 2011-06-11T07:22:00

What I mean by signature is:

1. Open PDF in adobe acrobat or reader.
2. Click the sign button
3. Select Place Signature
4. Select the area for the Digital Signature.
5. At the sign document sreen, click the sign button.
6. Insert Smart Card and click ok.
7. Save PDF
8. Enter PIN number to smart card.

Then after that I upload the PDF to the database using the regular method found in Code Project and many other places as well.

MT 2MB · Answer 3 · 2011-06-15T04:13:00

Solution 3

Turns out is was my programatic error.

Posted 15-Jun-11 4:13am