https://bz.apache.org/ooo/show_bug.cgi?id=127161
--- Comment #2 from orcmid <[email protected]> --- PS: Since the use of passwords to prevent editing (but not reading) involves weak protections that can be overcome by a malicious party, what can be done to deal with the prospect of alteration. An available approach is to digitally-sign any such document so that if there are alterations, the signature will either be removed or fail to verify. The signature also demonstrates the authenticity of the document that is provided to recipients. I don't know how that works for PDFs, but digital signatures will work for OpenOffice Calc and Writer documents. Any mechanism for signing PDFs is probably something that Adobe provides. I don't believe there is any provision in OpenOffice for successfully signing non-ODF documents. It is necessary to obtain a public-key certificate to do this. There are free ones available for users on Microsoft Windows. There are other arrangements for other platforms. -- You are receiving this mail because: You are the assignee for the issue.
