Add-BitLockerKeyProtector

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [[-Password] <SecureString>]
    [-PasswordProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [[-RecoveryPassword] <String>]
    [-RecoveryPasswordProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [-StartupKeyPath] <String>
    [-StartupKeyProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [-StartupKeyPath] <String>
    [-TpmAndStartupKeyProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [-StartupKeyPath] <String>
    [[-Pin] <SecureString>]
    [-TpmAndPinAndStartupKeyProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [-ADAccountOrGroup] <String>
    [-ADAccountOrGroupProtector]
    [-Service]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [[-Pin] <SecureString>]
    [-TpmAndPinProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [-TpmProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Add-BitLockerKeyProtector
    [-MountPoint] <String[]>
    [-RecoveryKeyPath] <String>
    [-RecoveryKeyProtector]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

The Add-BitLockerKeyProtector cmdlet adds a protector for the volume key of the volume protected with BitLocker Drive Encryption.

When a user accesses a drive protected by BitLocker, such as when starting a computer, BitLocker requests the relevant key protector. For example, the user can enter a PIN or provide a USB drive that contains a key. BitLocker retrieves the encryption key and uses it to read data from the drive.

You can use one of the following methods or combinations of methods for a key protector:

• Trusted Platform Module (TPM). BitLocker uses the computer's TPM to protect the encryption key. If you specify this protector, users can access the encrypted drive as long as it is connected to the system board that hosts the TPM and the system boot integrity is intact. In general, TPM-based protectors can only be associated to an operating system volume.
• TPM and Personal Identification Number (PIN). BitLocker uses a combination of the TPM and a user-supplied PIN. A PIN is four to twenty digits or, if you allow enhanced PINs, four to twenty letters, symbols, spaces, or numbers.
• TPM, PIN, and startup key. BitLocker uses a combination of the TPM, a user-supplied PIN, and input from of a USB memory device that contains an external key.
• TPM and startup key. BitLocker uses a combination of the TPM and input from of a USB memory device.
• Startup key. BitLocker uses input from of a USB memory device that contains the external key.
• Password. BitLocker uses a password.
• Recovery key. BitLocker uses a recovery key stored as a specified file in a USB memory device.
• Recovery password. BitLocker uses a recovery password.
• Active Directory Domain Services (AD DS) account. BitLocker uses domain authentication to unlock data volumes. Operating system volumes cannot use this type of key protector.

You can add only one of these methods or combinations at a time, but you can run this cmdlet more than once on a volume.

Adding a key protector is a single operation; for example, adding a startup key protector to a volume that uses the TPM and PIN combination as a key protector results in two key protectors, not a single key protector that uses TPM, PIN, and startup key. Instead, add a protector that uses TPM, PIN, and startup key and then remove the TPM and PIN protector by using the Remove-BitLockerKeyProtector cmdlet.

For a password or PIN key protector, specify a secure string. You can use the ConvertTo-SecureString cmdlet to create a secure string. You can use secure strings in a script and still maintain confidentiality of passwords.

This cmdlet returns a BitLocker volume object. If you choose recovery password as your key protector but do not specify a 48-digit recovery password, this cmdlet creates a random 48-digit recovery password. The cmdlet stores the password as the RecoveryPassword field of the KeyProtector attribute of the BitLocker volume object.

If you use startup key or recovery key as part of your key protector, provide a path to store the key. This cmdlet stores the name of the file that contains the key in the KeyFileName field of the KeyProtector field in the BitLocker volume object.

For an overview of BitLocker, see BitLocker Drive Encryption Overview on TechNet.

PS C:\>$SecureString = ConvertTo-SecureString "1234" -AsPlainText -Force
PS C:\>Add-BitLockerKeyProtector -MountPoint "C:" -Pin $SecureString -TPMandPinProtector

This example adds a combination of the TPM and a PIN as key protector for the BitLocker volume identified with the drive letter C:.

The first command uses the ConvertTo-SecureString cmdlet to create a secure string that contains a PIN and saves that string in the $SecureString variable. For more information about the ConvertTo-SecureString cmdlet, type Get-Help ConvertTo-SecureString.

The second command adds a protector to the BitLocker volume that has the drive letter C:. The command specifies that this volume uses a combination of the TPM and the PIN as key protector and provides the PIN saved in the $SecureString variable.

PS C:\>Get-BitLockerVolume | Add-BitLockerKeyProtector -RecoveryKeyPath "E:\Recovery\" -RecoveryKeyProtector

This command gets all the BitLocker volumes for the current computer and passes them to the Add-BitLockerKeyProtector cmdlet by using the pipe operator. This cmdlet specifies a path to a folder where the randomly generated recovery key will be stored and indicates that these volumes use a recovery key as a key protector.

PS C:\>Add-BitLockerKeyProtector -MountPoint "C:" -AdAccountOrGroup "Western\SarahJones" -AdAccountOrGroupProtector

This command adds an AD DS account key protector to the BitLocker volume specified by the MountPoint parameter. The command specifies an account and specifies that BitLocker uses user credentials as a key protector. When a user accesses this volume, BitLocker prompts for credentials for the user account Western\SarahJones.

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.