Daniel,

Daniel Oliveras wrote:
> I am developing a module to digitally sign PDF documents for internal use
> in a company. We want to add a timestamp to the signature in case we need
> to verify the signature date, but only for internal use, so we are trying
> to implement a functionality to "fake" a timestamp from the actual time of
> our internal server.

Have you considered setting up a time stamp server in that company? That way
no "faking" aound would be necessary.

Daniel Oliveras wrote:
> Is this possible using iText?
> Can web generate a TimeStamp response dicrectly from a given datetime and
> a digital signature for internal use?

Generating a timestamp response is not a task for iText. BouncyCastle, OTOH,
should be up to it. Be aware, though, that a timestamp essentially is a
signature in its own right which signs a special structure containing the
datetime in question. Therefore, you still have to decide on the company PKI
to use for the timestamp generation and verification.

If the module you develop will be used centrally on but one server, creating
timestamps with BC might be feasible. Otherwise I would definitively
recommend setting up a company internal time stamp server as mentioned
above.

Regards,   Michael.

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