I'll post tonight an example in Java and C# on how to sign with timestamps and
OCSP. However, this may not help you as you're interested in smartcards and
that (usually) requires an external signature bypassing the iText code.
Paulo
> -----Original Message-----
> From: redo [mailto:[email protected]]
> Sent: Tuesday, July 07, 2009 2:20 PM
> To: [email protected]
> Subject: [iText-questions] iText and TimeStamp
>
>
> Could someone provide pseudo code how to add the signature
> and timestamp to
> pdf because I have seen some realizations on web (for example
> http://www.mail-archive.com/[email protected].
> net/msg40287.html
> ) and there are a lot of questions.
> Currently i would like to get answers on such questions:
> 1) from what data the hash must be sent to timestamp server?
> as I understand
> the signatures must be included already then hash is calculated?
> 2) I have seen PdfSignatureAppearance.setCrypto is called and
> there usually
> are variable array certChain;
> it must contain what? (right now my smart card contains 2
> sertificates:
> 1 for signing and 1 SSL authorization sertificate to access
> TSA and get
> timestamp)
> 3) in some realizations I have seen CMSSignedDataGenerator,
> CMSAttributeTableGenerator and CMSSignedData usage; can
> somebody explain
> when these objects are used?
>
> I would be really nice if someone could explain generally how to and
> signatures with timestamp as there is really hard to find any
> information
> how it must be done correctly.
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