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RE: DES-CBC padding

To: "'Rishi Bhardwaj'" <rishib@cdacindia.com>, <ipsec@lists.tislabs.com>
Subject: RE: DES-CBC padding
From: "Satyadeva Konduru" <skonduru@caymas.com>
Date: Fri, 4 Oct 2002 09:21:47 -0700
Importance: Normal
In-Reply-To: <Pine.GSO.4.10.10210041528440.10010-100000@mailhub.cdac.ernet.in>
Sender: owner-ipsec@lists.tislabs.com

>Hi

>I am not sure about the padding to be used for DES-CBC mode when it is
>used in IPSec ESP.
>Can i use random data for padding? If so, can the IV be used for this
>purpose? Or will i have to follow the procedure outlined in RFC 2406
and
>pad the last block using a monotonically increasing sequence? 

You got use the monotonically increasing sequence starting from 1.

-Satya.

References:
- DES-CBC padding
  - From: Rishi Bhardwaj <rishib@cdacindia.com>

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