Any relatively modern Macbook will have no problems unencrypting such files. You can share dmg-folders with password protected files between Macs.

What should you do if the disk utility does not display your hard drive? We have prepared special instructions for this case. Note that macOS mounts dmg folders as external drives. Double-click the dmg folder and macOS will ask you to enter the password. It will appear next to the original folder. Once the process is done, you will see a folder with the dmg extension. It might take a few seconds or several minutes depending on how powerful your Mac is and how many files you placed in the folder. Now sit back and wait for macOS to create a password-protected ZIP file on your Mac. Do not use weak and easy to crack passwords. Create a strong password with numbers, letters, and special symbols. In the next step, macOS will ask you to create a password and verify it.Select the “Read and Write” option from the “Image format drop-down list.Archiving big files on an older Mac may take quite a while. Go to the Encryption tab and select “256-bit AES encryption.” If you want to password-protect many files in a ZIP archive on Mac, you can switch to 128-bit AES to save some time.Note that you can store any files you want in the protected ZIP file. Now select the folder you want to password protect in a ZIP archive.You can do that by navigating to the Applications folder or using Spotlight. All files inside a folder image are password-protected and encrypted. It allows creating a so-called folder image, encrypting it, and protecting with a password. To password-protect a ZIP file on Mac, you need to use Disk Utility. MacOS can pack files into a ZIP archive using Finder, but it does not offer an option to set a password. This article will show you how to password-protect a ZIP file on a Mac. Users without a password cannot open files inside a protected ZIP archive.

MacOS lets you create a password-protected ZIP archive without installing third-party apps (one of the small but convenient distinctions between Windows and macOS. Sometimes, creating a password-protected ZIP file on a Mac is the only option. Of course, the best option is not to store personal data on shared computers, but different users have different needs. If you use a shared computer with other people having access to it, password-protecting personal files using a ZIP archive may be a good solution.

Osx password protect zip