The 256-bit encryption is considered more secure than the 128-bit encryption, but the 256-bit encryption also takes longer to encrypt and decrypt. The two levels of encryption refer to the size of the keys used in the encryption/decryption process. We’ll start with an overview of the basics of disk images and encryption, and then show you how to actually create various types of disk images.ĭisk images support two types of encryption: 128-bit AES (Advanced Encryption Standard) and 256-bit AES. In this Rocket Yard Guide, we’re going to look at how to create encrypted disk images. Encrypted disk images can’t be mounted, viewed, or accessed unless you know the password associated with the image file. But one set of features seems to get overlooked a bit: the creation and management of encrypted disk images.ĭisk images have many benefits they can be used to distribute apps and data to users, for creating master image files for various media types, such as CDs and DVDs, and for creating archives and backups, as well as quite a few additional creative uses.Įncrypted disk images allow you to protect the content of the images from prying eyes. The Mac’s Disk Utility app supports a number of capabilities that make managing the Mac’s storage system easier.
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