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![]() BitLocker Drive Encryption utility on Windows 11 | |
Other names | Device Encryption |
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Developer(s) | Microsoft |
Initial release | January 30, 2007 |
Operating system | Microsoft Windows |
Type | Disk encryption software |
Website | learn![]() |
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]
Win10New
was invoked but never defined (see the help page).