Unlock a Bitlocker protected drive in vb.net

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Hi Everyone.

I have written a code to backup a database to drive E on my office computer.

But for security reasons the drive is locked with bitlocker and I know the password.
But when I try to backup the database without unlocking it obviously it does nothing.

So can you guys help me and suggest a way to unlock the drive with a button click in vb.net?

Thanks a lot

Posted 2-Oct-11 7:12am

Janaka Medawala

Updated 2-Oct-11 7:39am

Dalek Dave

v2

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André Kraak · Answer 1 · 2011-10-02T07:33:00

It looks like you can use the Win32_EncryptableVolume class[^], have a look at the the unlock functions.

UnlockWithCertificateFile[^]
Uses the provided certificate file to obtain the derived key and unlock the encrypted volume.

UnlockWithCertificateThumbprint[^]
Uses the provided certificate thumbprint to obtain the derived key and unlock the encrypted volume.

UnlockWithExternalKey[^]
Uses a provided external key to access the contents of a data volume.

UnlockWithNumericalPassword[^]
Uses a provided numerical password to access the contents of a data volume.

UnlockWithPassphrase[^]
Uses the passphrase to obtain the derived key. After the derived key is calculated, the derived key is used to unlock the encrypted volume's master key.