BitLocker Manager

BitLocker Manager - a tool being used to turn on or turn off BitLocker, specify unlock mechanisms, update recovery methods, and unlock BitLocker-protected data drives. This tool can be used in place of the BitLocker Drive Encryption Control Panel item.

BitLocker Drive Encryption (BitLocker) is a component of Windows Vista and later versions of Windows that helps to protect data by encrypting the entire volume and checking the integrity of early startup components.

Examples:

To unlock BitLocker-encrypted D: drive using the password:

manage-bde –unlock D: -rp<recovery password>

To unlock BitLocker-encrypted D: drive using the recovery key stored in the file:

manage-bde –unlock D: -rkC:\<recovery-key-file name>

Read more detailed information on BitLocker command-line tool usage here