Saving protected files does not work

[SheinEA]

The file is password protected, but has areas for editing - saving does not work.
The file is protected by the user's password - deleting this password programmatically does not work.

[SheinEA]

The library does not take into account that when a file is password protected, there are areas that are allowed to be edited. Now there is simply a check for the presence of a password and it is impossible to save the protected file. Even if you know the password, you won't be able to remove it because the checksum doesn't match, because a salt is used and it's not clear what kind of salt it is. It is likely that you also need to password protect the file through this library, and not through the editor. How to bypass password protection in this case, because it breaks the whole process? In earlier versions of the library this was not the case, we saved protected files and put our own protection on top, this was suitable for our process, but now we cannot do this. What to do in such a situation?

[evancekafando]

Hi

You can load and edit a password protected document. However, you will be required to provide the "password" wihtin the Save() method if you want to save the edited document. Failed to do so, you will encounter a "password protected document" exception or "Incorrect Password Excpetion" if you provide a wrong password.

You can bypass password protection by using Document.RemovePasswordProtection( string password ) method, edit the document, reset password protection by using Document.AddPasswordProtection( EditRestrictions editRestrictions, string password ). But still, you need to provide the right password in RemovePasswordProtection() and Save() methods.

Regarding your last point, as of not being able to remove it because the checksum not matching, you may be using password protected documents that uses Advanced Encryption Standard algorithm for password encrpytion. This has been brought to our attention lately. Later versions of Words (2016 and up) uses AES encryption type. Support for AES password encprypted documents has been implemented recently and should be made available in version 3.1. Could you please attach a sample document with the password used to protect the document so we can run some tests and confirm.

Thank you.
-The Xceed Team

[SheinEA]

Hi

test.docx

[evancekafando]

Hello

The issue has been identified and fixed. It will be included in version version 3.1.

Thank you.
The Xceed Team