enable password protection (Word) #1019
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mariahaubner
changed the title
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hello, what's is the state of this? still valid pr? i tried to test with master branch but there are some conflicts. |
fix PHPCS errors add documentation add sample
| /** | ||
| * Password encoder for microsoft office applications | ||
| */ | ||
| class PasswordEncoder |
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@maartenba @Progi1984 Would it make sense to move this class to the PHPOffice common project? I guess it could be reused in PhpSpreadsheet
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I think it would make sense to do, yes.
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The same as @maartenba
Poke @MarkBaker & @PowerKiKi
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@Progi1984 @maartenba @MarkBaker @PowerKiKi I created a PR in Common for this.
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I am actually not quite sure how this should/could be used in PhpSpreadsheet...
FYI, the PR: PHPOffice/Common#15
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It seems indeed that pre-2013 excel sheets use a very simplistic password hashing which is completely different.
In more recent specs, it also uses something very similar to what is used in word. Not sure the algorithm is the same though.
https://www.thespreadsheetguru.com/blog/2014/8/20/understanding-excels-password-security-methodology
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@PowerKiKi I see you have the pre-2013 hashing implemented already in PhpSpreadsheet/Shared/PasswordHasher, this would be a more modern password hashing mechanism
…/jun-i-corn/PHPWord into feature/EnablePasswordProtection
This pull request will solve #546
It enables PHPWord to create password protected docx-files which MS Word can open and unlock. It was tested on MS Word 2010.
To implement the password protection, we translated the C#-code from https://blogs.msdn.microsoft.com/vsod/2010/04/05/how-to-set-the-editing-restrictions-in-word-using-open-xml-sdk-2-0/
The actual password-hash generation is located in /Writer/Word2007/Part/Settings.php as it is Word-specific and cannot be used for the other writers.
I hope the comments left in the code and the link to the C# source clarify what is happening. But if there are any questions or remarks, feel free to share them.
Cheers, Maria