Hi,
In reader 8 and previous, when i wanted to have a form that could be signed, passed to the next persons, added attachement signed, repeat, while maintaining the signatures valid, i could.
Since we updated to reader 9.12 all previously signed documents appear with invalid signatures and if i try to attach a file, the add button just isn't there.
If i follow he following steps:
Server side:
- Create PDF from xdp + xml (using forms).
- Assign Form Fillin, Digital Signatures and File Attachment (using Reader Extentions)
Client side:
- Populate the Form data
- Attach files
- Certifiy
- Sign (multiple Signatures)
It works fine, but it isn't the workflow i had in previous versions.
The workflow i have here is:
Server side:
- Create PDF from xdp + xml (using forms).
- Assign Form Fillin, Digital Signatures and File Attachment (using Reader Extentions)
Client side:
- Populate the Form data
- Attach files
- add Signature (only locks a collections of form fields)
- Repeat until everyone has attached their files and signed.
The problem is that this worked fine in versions before 9 (all digital signatures here validated with the yellow exclamation mark indicating new content), but in 9 and up what i get, after validating the signatures in reader, is a information indicating that the signatures are invalid because the document is either corrupt or has been changed.
Is this a bug or has this been changed from version 8 to version 9?
I've read the changelist of reader 9 and it talks nothing about this situation or Digital Rights other than form fillin, annotations and digital signtatures (the ones we can choose in the certification wizard of Acrobat Pro).
Any idea if its possible to implement the second scenario in reader 9, or even if its possible? Is there a guide on the practices Adobe garaties will allow to validate signatures in the following years? Even if it means usings PDFA.
Thanks in advance.
