Il 09/09/2011 10:28, krisb ha scritto:
Hi all,

This is my first message here so please be tolerant :)
Maybe it is a not right place to ask, but let me start. I'm wondering if is
possible to open encrypted xlsx/docx files in Libo? IMHO MSO rights and
concept of protecting files exclude possibility of opening it in competitors
software, since it would be a breaking of encryption algorithm and it would
be against MSO rights. Am I right? The encryption methods are part which I
am not well acquainted yet :)

Let's forget for a moment MS's anti-competitor practices. Encryption doesn't rely on the algorithm being secret, but on the /encryption key/ being secret and strong enough to be practically impossible (or extremely costly) to guess with brute force.

The fact that MS tries to keep algorithms or implementation details hidden to hinder competition is a more general problem which has nothing to do with encryption.

HTH


As for example, similar topic was mentioned on OO forum:
http://user.services.openoffice.org/en/forum/viewtopic.php?f=9&t=34894
The file attached there could be opened in MSO, but in Libo 3.4.3
(win&linux) I can only saw “Filter Selection” window and “general
input/output error” message. The xlsx converted to xls in MSO (xls is also
password protected), work smoothly in Libo. So encryption is essential.

Moving away from the solution through the conversion to xls/doc, in general,
is there a chance to open encrypted ***x file in Libo?

Thanks in advance for answer!
Krzysztof

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Marcello Romani

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