---
title: Policy CSP - Bitlocker
description: Policy CSP - Bitlocker
ms.author: maricia
ms.topic: article
ms.prod: w10
ms.technology: windows
author: nickbrower
ms.date: 07/14/2017
---

# Policy CSP - Bitlocker

> [!WARNING]
> Some information relates to prereleased product which may be substantially modified before it's commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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## Bitlocker policies  

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<a href="" id="bitlocker-encryptionmethod"></a>**Bitlocker/EncryptionMethod**  

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<table>
<tr>
	<th>Home</th>
	<th>Pro</th>
	<th>Business</th>
	<th>Enterprise</th>
	<th>Education</th>
	<th>Mobile</th>
	<th>Mobile Enterprise</th>
</tr>
<tr>
	<td><img src="images/crossmark.png" alt="cross mark" /></td>
	<td><img src="images/checkmark.png" alt="check mark" /></td>
	<td></td>
	<td><img src="images/checkmark.png" alt="check mark" /></td>
	<td><img src="images/checkmark.png" alt="check mark" /></td>
	<td><img src="images/checkmark.png" alt="check mark" /></td>
	<td><img src="images/checkmark.png" alt="check mark" /></td>
</tr>
</table>

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<!--StartDescription-->
<p style="margin-left: 20px">Specifies the BitLocker Drive Encryption method and cipher strength.

> [!NOTE]
> XTS-AES 128-bit and XTS-AES 256-bit values are only supported on Windows 10 for desktop.

<p style="margin-left: 20px">The following list shows the supported values:

-   3 - AES-CBC 128-bit
-   4 - AES-CBC 256-bit
-   6 - XTS-AES 128-bit (Desktop only)
-   7 - XTS-AES 256-bit (Desktop only)

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<hr/>

Footnote:

-   1 - Added in Windows 10, version 1607.
-   2 - Added in Windows 10, version 1703.
-   3 - Added in Windows 10, version 1709.

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