Hi,
I have a digital signature plugin for signing and verification. The signatuers created by this plugin can be cleared/removed on any machine (other than the one on which it was created) on which the signer certificate is not installed.
Steps of reproduction:
1. sign one pdf with default Acrobat plugin.
2. sign another pdf with our digital signature plugin.
3. on another machine where the signer certificate is not installed, and our plugin is installed, open both pdfs and try to remove the signatures in them.
4. result: Pdf signed by default acrobat plugin does not allow clearing of signature, where as, pdf signed by our plugin is still removeable.
What is it that i am missing here? How can I make my signatures act similar to the ones created by default acrobat plugin?
Thanks
P.S: I see that locking a field is a possibility, however, the acrobat signed pdf does not have any lock in it and yet it doesn't allow removal of signatures.
From the attached screen shot please note that the left most PDF is signed by our plugin and the middle one is signed by adobe's default plugin without locking, still both behave differently under our custom plugin. Please note also, that if our plugin is not installed, the behavior is same for both pdfs.
Message was edited by: shagidelic