Microsoft Download Center Archive

AES-CBC + Elephant diffuser

  • Published:
  • Version: 2006-08
  • Category: Document
  • Language: English

The specifications of the AES-CBC + diffuser algorithm used in BitLocker Drive Encryption

  • The Bitlocker Drive Encryption feature of Windows Vista poses an interesting set of security and performance requirements on the encryption algorithm used for the disk data. We discuss why no existing cipher satisfies the requirements of this application and document our solution which consists of using AES in CBC mode with a dedicated diffuser to improve the security against manipulation attacks.

Files

Status: Live

This download is still available on microsoft.com. The downloads below will come directly from the Microsoft Download Center.

FileSHA1 HashSize
BitLockerCipher200608.pdf50d4f6fc79bf34043cda1265b915fc96e56eb5a2161 KB

File sizes and hashes are retrieved from the Wayback Machine’s indexes. They may not match the latest versions of files hosted on Microsoft servers.

System Requirements

Operating Systems: Windows 10, Windows 7 Professional, Windows 8 Pro, Windows 8.1, Windows Vista

  • BitLocker is only availble in the Enterprise and Ultimate editions of Windows Vista

Installation Instructions

  • .

What is this?

In August 2020, Microsoft deleted thousands of downloads for prior versions of Windows, Office, Visual Studio, SQL Server, and countless other products. Legacy Update has catalogued the Microsoft Download Center as it stood prior to August 2020.

Check our Microsoft Download Center Archive homepage to discover more downloads.