----- Original Message ----- 
From: "Gurpreet-Singh" <[EMAIL PROTECTED]>
To: <itext-questions@lists.sourceforge.net>
Sent: Thursday, August 30, 2007 10:44 PM
Subject: Re: [iText-questions] PDF Digital signature with timestamp - using 
Time Stamp Authority - example


>
> Hi,
>
> Its a great guideline to include the TimeStamp while signing a pdf. But 
> when
> i am opening on different version of Adobe REader, its gving different
> result. In Adobe v 8, its working fine but in Adobe v 7 its giving i guess
> bad request. so, is there any Acrofield which governs the usage of PDF and
> makes it compatible for all Adobe reader OR this implementation is
> applicable to only Adobe v 8 and later version?
>

I've no idea about this.

> I have one more question, i am able to timestamp the signature 
> successfully.
> But only when i am creating a new PDF file. If i am using the same PDF 
> file
> name as a source and destination to make it as a certified, it gives
> ClassCastException, ArrayIndexOutOfBoundsException as follows depending 
> upon
> the usage of sap.preClose(exc) method.

You must use different names but nothing prevents you to copy the new file 
over the old file after the operation.

Paulo 


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