Daniel,

dahepe wrote:
> 
> And this works quite fine (at least Adobe Reader is able to verify the
> signature, haven't tried to verify with iText yet). However hashing the
> content with a <code>MessageDigest</code> and signing the hash as in the
> book's example instead of signing the content directly results in an
> invalid signature...
> 

In that case it would be helpful if you posted the code and an example PDF
signed by that code.

Regards,   Michael.
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