BitLocker

BitLocker
	Screenshot of the BitLocker Drive Encryption utility
Other names	Device Encryption
Developer(s)	Microsoft
Initial release	January 30, 2007
Operating system	Microsoft Windows
Type	Disk encryption software
Website	learn.microsoft.com/en-us/windows/security/operating-system-security/data-protection/bitlocker/

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. By default, it uses the Advanced Encryption Standard (AES) algorithm in cipher block chaining (CBC) or "xor–encrypt–xor (XEX)-based Tweaked codebook mode with ciphertext Stealing" (XTS) mode^[1] with a 128-bit or 256-bit key.^[2]^[3] CBC is not used over the whole disk; it is applied to each individual sector.^[3]

^ Cite error: The named reference Win10New was invoked but never defined (see the help page).
^ "Windows BitLocker Drive Encryption Frequently Asked Questions". TechNet Library. Microsoft. March 22, 2012. Retrieved March 7, 2020.
^ ^a ^b Ferguson, Niels (August 2006). "AES-CBC + Elephant Diffuser: A Disk Encryption Algorithm for Windows Vista" (PDF). Microsoft. Retrieved March 7, 2020.