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LRW: The Liskov-Rivest-Wagner tweakable narrow-block mode, a mode of operation specifically designed for disk encryption. Superseded by the more secure XTS mode due to security concerns. [122] XTS: XEX-based Tweaked CodeBook mode (TCB) with CipherText Stealing (CTS), the SISWG (IEEE P1619) standard for disk encryption.
VeraCrypt is a free and open-source utility for on-the-fly encryption (OTFE). [5] The software can create a virtual encrypted disk that works just like a regular disk but within a file. It can also encrypt a partition [ 6 ] or (in Windows ) the entire storage device with pre-boot authentication .
Portable or "traveller mode" means the encryption software can be run without installation to the system hard drive. In this mode, the software typically installs a temporary driver from the portable media. Since it is installing a driver (albeit temporarily), administrative privileges are still required.
The tweakable narrow-block encryption (LRW) [9] is an instantiation of the mode of operations introduced by Liskov, Rivest, and Wagner [10] (see Theorem 2). This mode uses two keys: K {\displaystyle K} is the key for the block cipher and F {\displaystyle F} is an additional key of the same size as block.
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I note that these edits were made to accommodate the addition of the CFB mode of operation whose properties are equivalent to CBC for the purposes of disk encryption; given this, I think we can put them both under a common column, the question relevant to disk encryption is whether PGPDisk uses public or private IVs -- e.g., whether it's ...
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