PDF with Digital Signatures

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   I'd like to know more about PDFs with Digital Signatures. 

I have three points :

1) Maybe someone else could offer to us an example ? So that we could open inside Acrobat and verify the Digital Signature ?

2) I can use QuickPDF to "sign" the PDFs I generate on-the-fly ?

3) What do I need to use as "ink" to sign my PDFs ? Is it possible to use my http server SSL certificate to sign the PDFs or do I need a special purpose certificate for doing that ?

TIA !

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jabaltie Members Profile Find Members Posts Senior Member Joined: 08 Nov 05 Location: Brazil Status: Offline Points: 138	Post Options Post Reply Quote jabaltie Report Post Thanks(0) Quote Reply Topic: PDF with Digital Signatures Posted: 10 Jan 07 at 8:47AM
	I'd like to know more about PDFs with Digital Signatures. I have three points : 1) Maybe someone else could offer to us an example ? So that we could open inside Acrobat and verify the Digital Signature ? 2) I can use QuickPDF to "sign" the PDFs I generate on-the-fly ? 3) What do I need to use as "ink" to sign my PDFs ? Is it possible to use my http server SSL certificate to sign the PDFs or do I need a special purpose certificate for doing that ? TIA !

Michel_K17 Members Profile Find Members Posts Newbie www.exp-systems.com Joined: 25 Jan 03 Status: Offline Points: 297	Post Options Post Reply Quote Michel_K17 Report Post Thanks(0) Quote Reply Posted: 10 Jan 07 at 11:08PM
	Hi, Unfortunately, QuickPDF does not support digital signatures. In 2004, iSed was "working" on a PDF digital signature tool, but it was never completed or published. If you are looking to apply digital signatures to a PDF file, then you need to look at a different library other thatn QuickPDF. The library that I resell does offer some digital signature support. See [here]. Apart from that, there are other options, but you will need to search for them on the internet. Cheers!
	Michel