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Re: [TLS] RC2 examples

Dr Stephen Henson <lists@drh-consultancy.demon.co.uk> Sun, 01 April 2007 01:11 UTC

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Date: Sun, 01 Apr 2007 02:11:20 +0100
From: Dr Stephen Henson <lists@drh-consultancy.demon.co.uk>
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Subject: Re: [TLS] RC2 examples
References: <!&!AAAAAAAAAAAYAAAAAAAAALn4DBa9j89Bkul53Jf1ky/CgAAAEAAAAHdDNLjXadBPvoT+aFioKpABAAAAAA==@USMedRec.com> <E1HXabN-0006oS-00@medusa01.cs.auckland.ac.nz> <!&!AAAAAAAAAAAYAAAAAAAAALn4DBa9j89Bkul53Jf1ky/CgAAAEAAAADsYN7N5IYpKuYHXYG5m5M4BAAAAAA==@USMedRec.com>
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Ron Teitelbaum wrote:
> That's pretty funny! 
> 
> Yes indeed, and that is what I'm finding.  But I'm also finding encrypted
> .PEM files.  Also I'm looking at PCKS-12 exported X509 certs.  It appears
> that part of the file is encrypted by Microsoft using RC2.  
> 
> So if anyone has anything it would really be helpful.  A key and the results
> of an expanded key.  A 64bit world and the results of a mix or mash.
> Anything would be great.  I have the algorithm completed but in smalltalk we
> start indexing at 1 not 0, so I think I have an offset problem somewhere.
> It's hard to debug blind.
> 

Yes the certificates in PKCS#12 files are commonly encrypted using RC2-40.

There are several usable RC2 implementations which you can use to debug
yours. One for example is in OpenSSL, see www.openssl.org.

Steve.


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