[144995] in cryptography@c2.net mail archive
AES-CBC + Elephant diffuser
daemon@ATHENA.MIT.EDU (Eugen Leitl)
Thu Oct 29 09:31:29 2009
Date: Thu, 29 Oct 2009 14:24:54 +0100
From: Eugen Leitl <eugen@leitl.org>
To: Cryptography List <cryptography@metzdowd.com>
"We discuss why no existing cipher satisfies the requirements of this
application". Uh-oh.
http://www.microsoft.com/downloads/details.aspx?FamilyID=131dae03-39ae-48be-a8d6-8b0034c92555&DisplayLang=en
AES-CBC + Elephant diffuser
Brief Description
A Disk Encryption Algorithm for Windows Vista
The specifications of the AES-CBC + diffuser algorithm used in BitLocker
Drive Encryption
Overview
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.
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