« Return to Thread: Verify PDF certification validity using iText
Re: Verify PDF certification validity using iText
by Paulo Soares-3
::
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There's no documentation from Adobe on what is considered legal or not to add to a certified doc. iText doesn't do any verifying other than verifying the signature.
Paulo
> -----Original Message-----
> From: JC Guerrero [mailto:jcwarrior.list@...]
> Sent: Thursday, July 02, 2009 8:50 AM
> To: itext-questions@...
> Subject: [iText-questions] Verify PDF certification validity
> using iText
>
> Hello.
>
> First, sorry for my english...
>
> I'm using Java iText to certify PDF document and get control
> of changes allowed in document. I want to only allow to
> append new digital signatures over the certified document.
>
> The PDF certified with
> sap.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_FOR
> M_FILLING) is verifiyng OK, either with iText and Adobe
> Reader if only changes allowed are appended to the document.
>
> But i don't know how can i check if the certification
> maintains his validity (with iText) when changes not allowed
> have been added to the document certified.
>
> Is there any way to check the certification status with itext?
>
> Many thanks.
>
> JC Guerrero
>Aviso Legal:
Esta mensagem é destinada exclusivamente ao destinatário. Pode conter informação confidencial ou legalmente protegida. A incorrecta transmissão desta mensagem não significa a perca de confidencialidade. Se esta mensagem for recebida por engano, por favor envie-a de volta para o remetente e apague-a do seu sistema de imediato. É proibido a qualquer pessoa que não o destinatário de usar, revelar ou distribuir qualquer parte desta mensagem.
Disclaimer:
This message is destined exclusively to the intended receiver. It may contain confidential or legally protected information. The incorrect transmission of this message does not mean the loss of its confidentiality. If this message is received by mistake, please send it back to the sender and delete it from your system immediately. It is forbidden to any person who is not the intended receiver to use, distribute or copy any part of this message.
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Paulo
> -----Original Message-----
> From: JC Guerrero [mailto:jcwarrior.list@...]
> Sent: Thursday, July 02, 2009 8:50 AM
> To: itext-questions@...
> Subject: [iText-questions] Verify PDF certification validity
> using iText
>
> Hello.
>
> First, sorry for my english...
>
> I'm using Java iText to certify PDF document and get control
> of changes allowed in document. I want to only allow to
> append new digital signatures over the certified document.
>
> The PDF certified with
> sap.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_FOR
> M_FILLING) is verifiyng OK, either with iText and Adobe
> Reader if only changes allowed are appended to the document.
>
> But i don't know how can i check if the certification
> maintains his validity (with iText) when changes not allowed
> have been added to the document certified.
>
> Is there any way to check the certification status with itext?
>
> Many thanks.
>
> JC Guerrero
>
Esta mensagem é destinada exclusivamente ao destinatário. Pode conter informação confidencial ou legalmente protegida. A incorrecta transmissão desta mensagem não significa a perca de confidencialidade. Se esta mensagem for recebida por engano, por favor envie-a de volta para o remetente e apague-a do seu sistema de imediato. É proibido a qualquer pessoa que não o destinatário de usar, revelar ou distribuir qualquer parte desta mensagem.
Disclaimer:
This message is destined exclusively to the intended receiver. It may contain confidential or legally protected information. The incorrect transmission of this message does not mean the loss of its confidentiality. If this message is received by mistake, please send it back to the sender and delete it from your system immediately. It is forbidden to any person who is not the intended receiver to use, distribute or copy any part of this message.
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_______________________________________________
iText-questions mailing list
iText-questions@...
https://lists.sourceforge.net/lists/listinfo/itext-questions
Buy the iText book: http://www.1t3xt.com/docs/book.php
Check the site with examples before you ask questions: http://www.1t3xt.info/examples/
You can also search the keywords list: http://1t3xt.info/tutorials/keywords/
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