Operation Manual

Security options
Use the LibreOffice – Security page to choose security options for saving documents and for
opening documents that contain macros.
Figure 23: Choosing security options for opening and saving documents
Security options and warnings
If you record changes, save multiple versions, or include hidden information or notes in your
documents, and you do not want some of the recipients to see that information, you can set
warnings to remind you to remove it, or you can have LibreOffice remove some of it
automatically. Note that (unless removed) much of this information is retained in a file
whether the file is in LibreOffice’s default OpenDocument format, or has been saved to other
formats, including PDF.
Click the Options button to open a separate dialog with specific choices (Figure 25). See
“Security options and warnings” on page 44.
Macro security
Click the Macro Security button to open the Macro Security dialog (not shown here), where
you can adjust the security level for executing macros and specify trusted sources.
Certificate Path
Users can digitally sign documents using LibreOffice. A digital signature requires a personal
signing certificate. Most operating systems can generate a self-signed certificate. However, a
personal certificate issued by an outside agency (after verifying an individual’s identity) has a
higher degree of trust associated with it than does a self-signed certificate. LibreOffice does
not provide a secure method of storing these certificates, but it can access certificates that
have been saved using other programs. Click the Certificate button and select which
certificate store to use.
Note
The Certificate Path option appears only on Linux and Mac systems. On Windows,
LibreOffice uses the default Windows location for storing and retrieving certificates.
Chapter 2 Setting up LibreOffice | 43