![]() ![]() ![]() How Good Is FileVault Encryption?įileVault uses an encryption method known as “XTS-AES-128 encryption with a 256-bit key” to encode the information on a disk. That “key” can be a password or some biometric means of identification. Encrypting the disk means that the information stored on it is encoded using an algorithm (also known as a cipher) that scrambles the data and makes it readable only by someone holding a decryption key. In other words, if someone stole a Mac, removed the unencrypted startup disk, and connected it to another computer with the proper cable, they would have access to read all of the files on that computer. When a Mac stores information on a hard disk drive (HDD) or solid-state drive (SSD), it is generally written in a format that can be easily read by anyone with a computer. The current implementation of FileVault is known as FileVault 2 - for the purpose of brevity in this post, it will just be called FileVault. In this Mac 101 article, we’ll take a detailed look at FileVault, how it works, things to watch out for when using it, and why owners of Mac laptops should consider using FileVault. Long-time readers of the Rocket Yard have probably heard us mention Apple’s FileVault Encryption, which is a way to encrypt the startup disk on your Mac. ![]()
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