Some of our data requires protection from unauthorized access. In macOS, encrypting folders directly is not possible, but there is nothing stopping them from being placed in secure containers. Special applications, such as Encrypto, do this. But this program works with its own encryption format, which will make it impossible to open the folder on another device, without an installed application.
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It will be much easier to use the standard tool of macOS itself to achieve the goal – Disk utility. Here’s what to do.
Run the application Disk utility using Launchpad. You can find the utility along the way Programs → Utilities → Disk Utility.app.
In the menu bar, click on File → New Image → Image from Folder.
In the pop-up window you will have to select the folder whose password protection is required.
Disk utility save this folder in a new format. Enter the name of her new image and the path to save it. In the drop-down list “Encryption»Select the required data protection method. There are few options, but they are: 128-bit AES encryption and 256-bit AES encryption. The second option is more reliable, but it will require more time for implementation. 128-bit encryption will be faster (recommended). The user should decide for himself what is more important to him.
In the next step, you will need to enter a password, which will protect the folder. The input must be repeated in the second field.
You should remember the entered characters well, because without them it will be practically impossible to decrypt the data. In the second drop-down list “Image format“Select option”read / write“.
This will make it possible not only to read files from an encrypted folder, but also to delete them from there or add them.
It remains only to press the button “Save»And wait for the formation of the encrypted image in the DMG format.
Now the source folder is no longer needed – we created its encrypted copy. If you need to access data in this image, you just need to double-click on it and enter the password entered at the stage of formation.
The image will connect as a separate disk. There you can both add files and delete them. When the work with encrypted data is finished, the disk will need to be disconnected, as is usually done with any external media.