Today, LUKS is widely used in nearly every Linux distribution on desktop and laptop computers. LUKS is a de-facto standard for full-disk encryption in Linux, facilitating compatibility among various Linux distributions and providing secure management of multiple user passwords. LUKS is a platform-independent disk encryption specification originally developed for the Linux OS. Different hash functions and with numerous hash iterations are used to slow down the speed of potential brute force attacks. Instead, it is typically used to protect and unprotect (wrap/unwrap) the actual symmetric encryption key. This binary key is rarely used directly to encrypt or decrypt data. The KDF employs multiple rounds of one-way transformations (hashing) of the user’s input to produce a binary key. The symmetric encryption keys are derived from the user’s password (or other data) by using a Key Derivation Function (KDF). Some disk encryption tools offer the choice of encryption algorithms, while others can only alter the key length and/or encryption mode. The default encryption algorithm today is hardware-accelerated AES-256 encryption, although Microsoft BitLocker defaults to using AES-128. Disk Encryption Basicsĭisk encryption tools rely on symmetric cryptography to encrypt data. Learn how to deal with LUKS2 encryption in Windows and how to break in with distributed password attacks. LUKS2 further improves the already tough disk encryption. LUKS is a classic implementation of disk encryption offering the choice of encryption algorithms, encryption modes and hash functions. Many non-ZFS Linux distributions rely on LUKS for data protection. Disk encryption is widely used desktop and laptop computers.
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