Hi :) Are you sure that's not a password rather than a signature? I had a similar 'problem' at work = ie that is was unexpectedly easy to open a document that was supposed to be protected in some way.
Now i am wondering if my works file was just signed when it should have been password protected. Of course it's impossible to find out from the accounts department exactly what they were trying to do and what they really ended up doing. Regards from Tom :) --- On Fri, 16/9/11, Dennis E. Hamilton <dennis.hamil...@acm.org> wrote: From: Dennis E. Hamilton <dennis.hamil...@acm.org> Subject: RE: [libreoffice-users] Re: Digital signing MS format documents To: users@global.libreoffice.org Date: Friday, 16 September, 2011, 17:51 I believe those APIs are for OOXML packages, not the binary formats. It could be that they also work on the binary formats (.doc, .xls, ...), but I would be a little surprised if that were the case. This has me wonder if digital signatures are even available on the binary formats (.doc, .xls, ...). To confirm that they are (perhaps): I created a document in Word 2010 and then inserted a "signature line." This is an inserted block where a recipient is expected to review and then "sign" the document. The signature is then protected as a digital signature. I saved it as a .doc When I opened it, there is a notice on the top that says "This document needs to be signed." The View Signatures button showed me that there is a requested signature from Dennis E. Hamilton. I clicked the option to sign it as Dennis E. Hamilton. I typed my name into the signature line field, and clicked Sign. This had the document marked as final too. Then when I clicked to see signature details, it says valid XAdES-EPES signature. Wow, and it shows that I signed with a certificate issued to orcmid that is valid from 2011-03-03 to 2111-02-07. Hmm, this is a self-issued certificate that the operating system gave to me. When this .doc is opened in LibreOffice, it is as if I had never signed it, and the text I typed in for my signature is also missing in the signature block. I could find no way to have a .doc signature that was on the document the way that LibreOffice signs ODF documents. It could be that I didn't know where to look, but the signing in Word seems wildly different from signing in LibreOffice. -----Original Message----- From: draganb [mailto:d_bocev...@yahoo.com] Sent: Friday, September 16, 2011 00:18 To: users@global.libreoffice.org Subject: [libreoffice-users] Re: Digital signing MS format documents Yes, the available API could be used for signing AND verification. And also, as I learned today, MS also offers a non .NET set of APIs for C and C++ developers. "The Windows 7 Packaging feature is a set of COM-based API that provides support for accessing, modifying, and saving packages by using C and C++." - (http://msdn.microsoft.com/en-us/library/dd371623.aspx) (from: http://blogs.msdn.com/b/dmahugh/archive/2011/04/19/libopc-version-0-0-1-released.aspx) Historically, there have been two popular .NET APIs for Open XML development: System.IO.Packaging (which first appeared in .NET 3.0) and the Open XML SDK, released in early 2007. There’s also a COM-based native packaging API available for non-.NET Windows developers. Aside from this, some enthusiasts began working on a open source component for working with OPC container named libopc. They also wrote a LibreOffice extension for working with MS formats as an alternative to the LO native support for MS formats. It could turn out an interesting project. (http://www.youtube.com/watch?v=RzUlEVLnz6U&feature=player_embedded#!) Dragan -- View this message in context: http://nabble.documentfoundation.org/Digital-signing-MS-format-documents-tp3331970p3341213.html Sent from the Users mailing list archive at Nabble.com. -- For unsubscribe instructions e-mail to: users+h...@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted -- For unsubscribe instructions e-mail to: users+h...@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted -- For unsubscribe instructions e-mail to: users+h...@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted