But this implementation requires a USB startup key to turn on the computer or resume from hibernation. BitLocker also creates a recovery key for the user's hard drive - in case the user forgets or loses their password.Ĭomputers that do not have a TPM installed can still use BitLocker to encrypt Windows OS drives.
In addition to a TPM, BitLocker can also lock the startup process until the user inputs a PIN or inserts a removable device like a flash drive that has a startup key. The TPM is installed by the original computer manufacturer and works with BitLocker to protect user data. The TPM stores Rivest-Shamir-Adleman encryption keys specific to the host system for hardware authentication. How does BitLocker work?īitLocker uses a specialized chip called a Trusted Platform Module ( TPM). BitLocker itself works on Pro, Enterprise and Education editions of Windows. This update applies to Windows 11, 10 and Server 2016 and above. BitLocker combines the on-disk encryption process and special key management techniques.Īlthough BitLocker first debuted with Windows Vista in 2007, beginning with Windows 10 version 1511, Microsoft updated BitLocker, introducing new encryption algorithms, new group policy settings, new operating system (OS) drives and removable data drives.
It uses the Advanced Encryption Standard algorithm with 128- or 256-bit keys. Microsoft BitLocker improves file and system protections by mitigating unauthorized data access. BitLocker enables users to encrypt everything on the drive Windows is installed on, protecting that data from theft or unauthorized access. Gillis, Technical Writer and EditorīitLocker Drive Encryption, or BitLocker, is a Microsoft Windows security and encryption feature that is included with certain newer versions of Windows.
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