[rc5] The DOS client appears at last!

Mike Lingk mlingk at enteract.com
Tue Oct 28 11:58:32 EST 1997


 Actually, you should be able to get any plaintext you want because of using unique bits for every bit in the
Cyphertext with exclusive or.  We could even get a work of Shakespeare ;) (provided the message was long enough)

 -Mike Lingk

-----Original Message-----
From:	Eric Gindrup [SMTP:gindrup at okway.okstate.edu]
Sent:	Tuesday, October 28, 1997 11:14 AM
To:	rc5 at llamas.net
Subject:	Re[2]: [rc5] The DOS client appears at last! 


     Depends on how you define one-time-pad and how it is used.
     
     If the plaintext is XORed against an OTP, then you are correct.  If 
     the sender chooses to use the OTP in a "sophisticated" way, then there 
     is some non-negligible probability that only a handful of syntactical 
     messages will be produced by trying all possible sequences of inputs 
     to the sophisticated method.
     So, to attack a OTP, hope for a "knowledgable" user.
            -- Eric Gindrup ! gindrup at Okway.okstate.edu


______________________________ Reply Separator _________________________________
Subject: Re: [rc5] The DOS client appears at last! 
Author:  <rc5 at llamas.net > at SMTP
Date:    10/27/97 7:56 AM


>Date: Sat, 25 Oct 1997 14:15:35 +0200 
>From: Jo Hermans <Jo.Hermans at vub.ac.be>
>Subject: Re: [rc5] The DOS client appears at last! 
>
>On the other hand, you use the Bovine "brute force attack" against any 
>encryption algorithm. It's just a matter of patience : some will crack 
>sooner than others.
     
Not quite true.  There will never be a successful brute force attack on 
a properly implemented One Time Pad because the OTP is mathematically 
secure.  No technology will ever crack it.
     
     
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