Beginner's Tutorial

System Encryption

 Supported Systems

 Hidden Operating System

 Rescue Disk

Plausible Deniability

 Hidden Volume

  Protection of Hidden Vol.

  Security Requirements

 Hidden Operating System



Hardware Acceleration

Encryption Algorithms





Hash Algorithms




Technical Details


 Encryption Scheme

 Modes of Operation

 Header Key Derivation

 Random Number Gen.


 Volume Format Spec.

 Standards Compliance

 Source Code

TrueCrypt Volume

 Creating New Volumes

 Favorite Volumes

 System Favorite Volumes

Main Program Window

 Program Menu

 Mounting Volumes

Supported Systems

Portable Mode


Tokens & Smart Cards

Language Packs

Hot Keys

Security Model

Security Requirements

 Data Leaks

  Paging File

  Hibernation File

  Memory Dump Files

 Unencrypted Data in RAM

 Physical Security


 Multi-User Environment

 Authenticity and Integrity

 New Passwords & Keyfiles

 Password/Keyfile Change

 Trim Operation


 Reallocated Sectors


 Journaling File Systems

 Volume Clones

 Additional Requirements

Command Line Usage

Backing Up Securely


 Use Without Admin Rights

 Sharing over Network

 Background Task

 Removable Medium Vol.

 TrueCrypt System Files

 Removing Encryption

 Uninstalling TrueCrypt

 Digital Signatures



Issues and Limitations


Future Development


Version History



Encryption Algorithms Search


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Encryption Algorithms

TrueCrypt volumes can be encrypted using the following algorithms:

Algorithm Designer(s) Key Size
Block Size (Bits) Mode of Operation
AES J. Daemen, V. Rijmen 256 128 XTS
Serpent R. Anderson, E. Biham, L. Knudsen 256 128 XTS
Twofish B. Schneier, J. Kelsey, D. Whiting,
D. Wagner, C. Hall, N. Ferguson
256 128 XTS
AES-Twofish   256; 256 128 XTS
AES-Twofish-Serpent   256; 256; 256 128 XTS
Serpent-AES   256; 256 128 XTS
Serpent-Twofish-AES   256; 256; 256 128 XTS
Twofish-Serpent   256; 256 128 XTS

For information about XTS mode, please see the section Modes of Operation.

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