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BitLocker is a full volume encryption feature included with Microsoft Windows versions starting with Windows Vista.It is designed to protect data by providing encryption for entire volumes.
Transparent data encryption (often abbreviated as TDE) is used to encrypt an entire database, [2] which therefore involves encrypting "data at rest". [4] Data at rest can generally be defined as "inactive" data that is not currently being edited or pushed across a network. [5] As an example, a text file stored on a computer is "at rest" until ...
Data encryption, which prevents data visibility in the event of its unauthorized access or theft, is commonly used to protect data in motion and increasingly promoted for protecting data at rest. [9] The encryption of data at rest should only include strong encryption methods such as AES or RSA. Encrypted data should remain encrypted when ...
Compromising data in use enables access to encrypted data at rest and data in motion. For example, someone with access to random access memory can parse that memory to locate the encryption key for data at rest. Once they have obtained that encryption key, they can decrypt encrypted data at rest.
The two main use cases are Data at Rest protection, and Cryptographic Disk Erasure. For Data at Rest protection a computer or laptop is simply powered off. The disk now self-protects all the data on it. The data is safe because all of it, even the OS, is now encrypted, with a secure mode of AES, and locked from reading and writing. The drive ...
Disk encryption is a special case of data at rest protection when the storage medium is a sector-addressable device (e.g., a hard disk). This article presents cryptographic aspects of the problem. For an overview, see disk encryption.
Data in transit generally uses public key ciphers, and data at rest generally uses symmetric key ciphers. Symmetric key ciphers can be further divided into stream ciphers and block ciphers. Stream ciphers typically encrypt plaintext a bit or byte at a time, and are most commonly used to encrypt real-time communications, such as audio and video ...
Using the command-line utility, it is possible to encrypt additional volumes. Bitlocker utilizes a USB key or Trusted Platform Module (TPM) version 1.2 of the TCG specifications to store its encryption key. It ensures that the computer running Windows Vista starts in a known-good state, and it also protects data from unauthorized access. [3]
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