BitLocker Disk Encryption

BitLocker, introduced with Microsoft's Windows Vista, is a program for full volume encryption.

Indicator

Drives protected with BitLocker will have a different signature than the standard NTFS header. Instead, they have in their first sector, they have

EB 52 90 2D 46 56 45 2D 46 53 2D

, or, in ASCII,

eR -FVE-FS-

Algorithm

The program uses either 128 or 256 AES with an elephant diffuser. See the links section for full details.

External Links

• Wikipedia entry on BitLocker
• Microsoft's Step by Step Guide
• Microsoft Technical Overview
• Microsoft FAQ
• Microsoft Description of the Encryption Algorithm