MITM on 3TDES and why is the effective key lenght 112 bits

From: docbook.xml@xxxxxxxxx
Date: 7 Sep 2006 09:40:26 -0700

Can anyone explain how the MITM works on 3TDES (three distinct keys)?

I am specifically interested in finding out why 3TDES has effective
key-length of 112-bit

In Peace,
Saqib Ali
http://www.full-disc-encryption.com

.

Follow-Ups:
- Re: MITM on 3TDES and why is the effective key lenght 112 bits
  - From: Mark Wooding
- Re: MITM on 3TDES and why is the effective key lenght 112 bits
  - From: Alan
- Re: MITM on 3TDES and why is the effective key lenght 112 bits
  - From: Francois Grieu

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