Is it possible to edit protect a docx file using password programatically

[sachin-jose]

For a project that I am currently working on have a requirement to edit and protect the docx file using a password. Once the file is saved it should be possible to open and view the file, but it should be non-editable. When the user tries to edit it, it should ask for the password.

We could do it manually using libreOffice editor in 'SaveAs' option.

I am trying to do it programatically.
I tried CLI options but was not able to find support.
Also, I tried UNO APIs using C#. It has the option to set the password but when trying to set the read-only property and save it getting an exception with error code 7. I have added the code snippet below.

{
    XComponent xComponent = xCompLoader.loadComponentFromURL(docPath, "_blank", 0, loadProps);
    // Query for the XStorable interface
    XStorable xStorable = (XStorable)xComponent;
    // Set the password protection and specify the file format
    PropertyValue[] storeProps = new PropertyValue[2];
    storeProps[0] = new PropertyValue
    {
        Name = "ReadOnly",
        Value = new uno.Any(true)
    };
    storeProps[1] = new PropertyValue
    {
        Name = "Password",
        Value = new uno.Any("your_password")
    };
    
    // Save the document with password protection
    string savePath = "file:///" + fileUri.LocalPath.Replace("\\", "/");
    xStorable.storeAsURL(savePath, storeProps);
}

Could you help me on this

[vladholubiev]

Hello, I recommend posting your question to the LibreOffice forum or StackOverflow, as it deals more with LibreOffice functionality rather than AWS Lambda Layer, which only packages it. Thanks!