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Creating Encrypted Containers with Disk Utility
(for simple file-based encryption - check the help files for a particular software product – many, such as Microsoft Office and Adobe Acrobat, have built-in tools to encrypt (password-protect) documents.
Current versions of the macOS include the ability to create encrypted disk images. This allows you to create a password-protected container file that will mount as an additional drive in the Finder only after a decryption key is entered -- without the decryption key, the data is unreadable by anyone who merely has access to the file.
The following instructions will walk you through basic setup using the built in Disk Utility application. (If you wish to use a third-party tool -- you can reference the instructions for Windows users -- they are very similar.)
If you are interested in a full-disk encryption solution for a Whitman-owned/managed device -- please contact the WCTS Help Desk or the Information Security Office for a discussion about the options available to you.
** Reminder: modern encryption tools are very powerful. If you lose or forget your decryption key (password) -- the encrypted data is effectively lost. Proceed with caution and understand the potential data loss risks.
Step-by-step guide
To create a new protected container:
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Drag the container’s desktop icon towards the trash icon
Drop the container icon on the ‘eject’ icon
Encrypted file containers can be moved and used on multiple computers provided both are Macintosh computers.
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