Apache OpenOffice (AOO) Bugzilla – Issue 46307
Support RC4 encryption to load password protected PPT(Powerpoint)-files
Last modified: 2024-03-16 11:04:41 UTC
when trying to open an password-encrypted ppt you get following message: read error the loading of password-encrypted Microsoft PowerPoint presentation is not supported..
Created attachment 24419 [details] the ppt file which caused the issue
Changed to defect, reassigned.
set to new and change the target.
With the internal bug 115982 you fixed something about password protected PPT-Files. Why can't we load this file. Has this file another encryption? Please have a look.
sj->cgu: As you can read in 115982 PowerPoint is providing RC4 encryption only, and RC4 is not be supported by OOo. That time I added the new error message"read error the loading of password-encrypted Microsoft PowerPoint presentation is not supported.." so that you are not getting the general io error if trying to load protected files.
OOo should support RC4 encryption to load Password protected PPT-Files.
Set issue type, target and keywords.
*** Issue 62955 has been marked as a duplicate of this issue. ***
*** Issue 65376 has been marked as a duplicate of this issue. ***
We can see in various OOo forums that PowerPoint files password protected for modifications, but not protected for reading, are becoming common. Windows users (Win 200 and above) can display them with the free PowerPoint Viewer 2007. But users of other OS (Linux, Mac) cannot read these PowerPoint files. This is a real lack of compatibility for OpenOffice.org in the non-Microsoft world.
*** Issue 61691 has been marked as a duplicate of this issue. ***
*** Issue 87922 has been marked as a duplicate of this issue. ***
added 'Powerpoint' to the issues summary
Dear developers, please consider this issue for implementation. Thanks a lot for your attention. WBR, KP.
Created attachment 61218 [details] MS PowerPoint 2007 dialog requesting password when opening file.
*** Issue 94963 has been marked as a duplicate of this issue. ***
ccheney, since you changed the target, do you plan to implement it? Thats great news!
cl, "OOo Later" essentially is a target to send bugs to die never to be fixed or looked at again. So I bumped up the target from OOo Later since this issue is becoming more important to users as according to one of the comments they can't even open documents that are protected from modification. I have no idea how to fix the bug myself, sorry.
it does not make sense to set a concrete target if no resources are assigned for implementation, set target to 3.x.
@mh: target still shows 3.2 .. which I don't mind, but seems not correct
Dear developers, Please consider this issue for implementation. I am very happy OpenOffice user, but it is a real problem not to be able to open those password-protected documents. Thanks a lot for your attention. fmbp
*** Issue 97966 has been marked as a duplicate of this issue. ***
Hi, Is it really necessary to support RC4? Would it be possible to ask the user if it is ok to open the file in read-only mode if the password is not provided? In MS-Office, it is possible to open the file in read-only if the password is not known. This should not require RC4 and should be easier to implement; no? This problem is becoming more and more annoying since more and more files like that are becoming popular. Thanks !!!
The real issue isn't that of being open to load as read only or read/write, it's that files with this protection scheme enabled, even if no password is set, simply cannot be opened at all. In case I have fumbled my words: If RC5 password protection is enabled, but no password is specified, MS Powerpoint considers the files to no be protected and opens them with full read/write permissions, but OOo cannot open the file at all. If the file is opened in MS Pp and the properties edited to remove the RC5 setting (uncheck a box), then OOo can open the file as normal.
So, is anybody working to open .pps files in Open Office that MS Powerpoint Viewer is able to open? Maybe an Open Office PPS Viewer is necessary. Please respond.
Hi mcris: Opening pps files ia a different subject. PLs see issue 52755
Not really, since the issue is the Password protect problem with some (many) .pps files, that for MS Powerpoint Viewer is not a problem, but Open Office cannot open them.
This password-protected Microsoft PowerPoint slide show playback issue is really annoying, this breaks a little compatibility between Microsoft Office and OpenOffice.org. He would have found a way to open these slide shows just for reading and when clicking on the icon editing the file, a window appears to request the password (this is just an idea).
The issue 110254 (http://qa.openoffice.org/issues/show_bug.cgi?id=110254) could help to close this issue, isn't it?
*** Issue 118448 has been marked as a duplicate of this issue. ***
Wow. It has been over 7 years, and nobody has been able to fix this? Really? The read-only option sounds like a simple short term solution, and shouldn't require encryption.
So someone who has MSO, can you please post the 3 files for post # 34 in the following URL: https://bugs.freedesktop.org/show_bug.cgi?id=38370 I could even take a look then.
Just ran into this. (Password-protected PPT, opens fine on PPT 2003 SP3 under XP SP3, fails in OpenOffice 4 on OS X.) Just added a vote to this bug. To me this is pretty fundamental -- much closer to "broken essential functionality" than "enhancement." -H
*** Issue 127346 has been marked as a duplicate of this issue. ***
*** Issue 114903 has been marked as a duplicate of this issue. ***