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Starting with Windows 10 version 1511, however, Microsoft added a new FIPS-compliant XTS-AES encryption algorithm to BitLocker. [1] Starting with Windows 10 version 1803, Microsoft added a new feature called "Kernel Direct Memory access (DMA) Protection" to BitLocker, to protect against DMA attacks via Thunderbolt 3 ports.
In Windows 2000, XP or later, the user's RSA private key is encrypted using a hash of the user's NTLM password hash plus the user name – use of a salted hash makes it extremely difficult to reverse the process and recover the private key without knowing the user's passphrase. Also, again, setting Syskey to mode 2 or 3 (Syskey typed in during ...
The individual sector keys are stored on disk and encrypted with a master key. (See GBDE for details) LRW : The Liskov-Rivest-Wagner tweakable narrow-block mode, a mode of operation specifically designed for disk encryption.
Although this has the advantage that the disk cannot be removed from the device, it might create a single point of failure in the encryption. For example, if something happens to the TPM or the motherboard, a user would not be able to access the data by connecting the hard drive to another computer, unless that user has a separate recovery key.
When a cryptographic disk erasure (or crypto erase) command is given (with proper authentication credentials), the drive self-generates a new media encryption key and goes into a 'new drive' state. [10] Without the old key, the old data becomes irretrievable and therefore an efficient means of providing disk sanitisation which can be a lengthy ...
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: is the key for the block cipher and is an additional key of the same size as block.
[8] [14] NGSCB has yet to fully materialize; however, aspects of it are available in features such as BitLocker of Windows Vista, Measured Boot and UEFI of Windows 8, [15] Certificate Attestation of Windows 8.1, [16] Device Guard of Windows 10. [17] and Device Encryption in Windows 11 Home editions, with TPM 2.0 mandatory for installation.
Binding: Data is encrypted using the TPM bind key, a unique RSA key descended from a storage key. Computers that incorporate a TPM can create cryptographic keys and encrypt them so that they can only be decrypted by the TPM. This process, often called wrapping or binding a key, can help protect the key from disclosure.