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This mode is vulnerable to a cold boot attack, as it allows a powered-down machine to be booted by an attacker. The pre-OS components of BitLocker achieve this by implementing a Static Root of Trust Measurement-a methodology specified by the Trusted Computing Group (TCG). The key used for disk encryption is sealed (encrypted) by the TPM chip and will only be released to the OS loader code if the early boot files appear to be unmodified.

Transparent operation mode: This mode uses the capabilities of TPM 1.2 hardware to provide for transparent user experience-the user powers up and logs into Windows as usual.

Three authentication mechanisms can be used as building blocks to implement BitLocker encryption: This is due to hardware encryption flaws and security concerns related to those issues.

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Now, the default is to use software encryption for newly encrypted drives.

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In September 2019 a new update was released (KB4516071 ) changing the default setting for BitLocker when encrypting a self-encrypting hard drive.

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Starting with Windows 10 1703, the requirements for device encryption have changed, requiring a TPM 1.2 or 2.0 module with PCR 7 support, UEFI Secure Boot, and that the device meets Modern Standby requirements or HSTI validation. While device encryption is offered on all versions of 8.1, unlike BitLocker, device encryption requires that the device meet the InstantGo (formerly Connected Standby) specifications, which requires solid-state drives, non-removable RAM (to protect against cold boot attacks) and a TPM 2.0 chip. The recovery key is stored to either the Microsoft account or Active Directory, allowing it to be retrieved from any computer. Logging in with a Microsoft account with administrative privileges automatically begins the encryption process.

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Windows Mobile 6.5, Windows RT and core editions of Windows 8.1 include device encryption, a feature-limited version of BitLocker that encrypts the whole system. Finally, Windows 8 introduced Windows To Go in its Enterprise edition, which BitLocker can protect. In addition, BitLocker can now be managed through Windows PowerShell. Starting with Windows Server 2012 and Windows 8, Microsoft has complemented BitLocker with the Microsoft Encrypted Hard Drive specification, which allows the cryptographic operations of BitLocker encryption to be offloaded to the storage device's hardware. In addition, a new command-line tool called manage-bde replaced the old f.

On Windows XP or Windows Vista, read-only access to these drives can be achieved through a program called BitLocker To Go Reader, if FAT16, FAT32 or exFAT filesystems are used. The version of BitLocker included in Windows 7 and Windows Server 2008 R2 adds the ability to encrypt removable drives. Still, some aspects of the BitLocker (such as turning autolocking on or off) had to be managed through a command-line tool called f. Starting with Windows Vista with Service Pack 1 and Windows Server 2008, volumes other than the operating system volume could be encrypted using the graphical tool. Initially, the graphical BitLocker interface in Windows Vista could only encrypt the operating system volume.

Windows Server 2008 and later įeatures manage-bde Developer(s).

Pro, Enterprise, and Education editions of Windows 11.

Pro, Enterprise, and Education editions of Windows 10.

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Pro and Enterprise editions of Windows 8 and 8.1.

Ultimate and Enterprise editions of Windows Vista and Windows 7.

BitLocker was briefly called Secure Startup before Windows Vista's release to manufacturing. When used in conjunction with a compatible Trusted Platform Module (TPM), BitLocker can validate the integrity of boot and system files before decrypting a protected volume an unsuccessful validation will prohibit access to a protected system. BitLocker originated as a part of Microsoft's Next-Generation Secure Computing Base architecture in 2004 as a feature tentatively codenamed "Cornerstone" and was designed to protect information on devices, particularly if a device was lost or stolen another feature, titled "Code Integrity Rooting", was designed to validate the integrity of Microsoft Windows boot and system files.