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Internet Message Format  |  1992-11-07  |  932 b 
  1. Path: sparky!uunet!stanford.edu!rutgers!noao!amethyst!uurtamo
  2. From: uurtamo@math.arizona.edu (Steve Uurtamo)
  3. Newsgroups: alt.security
  4. Subject: Re: Tripwire release
  5. Message-ID: <3698@amethyst.math.arizona.edu>
  6. Date: 6 Nov 92 16:03:23 GMT
  7. References: <1992Nov4.203802.10885@cs.sandia.gov> <Bx8757.HoF@acsu.buffalo.edu> <LIMES.92Nov5142000@ouroborous.eng.sun.com>
  8. Sender: news@amethyst.math.arizona.edu
  9. Organization: Mathematics Department, University of Arizona
  10. Lines: 15
  11.  
  12. >I think this is insufficient.
  13. o                           o
  14. o  ...chit-chat deleted...  o
  15. o                           o
  16. >If I can make that backward calculation either
  17. >directly or by trial-and-error in a reasonable time, then your
  18. >signature protection system is no protection.
  19.  
  20. Have you ever tried to back-engineer any of these methods while spending
  21. "reasonable" time?  Even a slightly sophisticated method can keep you 
  22. from doing this.  
  23.  
  24.  
  25.  
  26. steve uurtamo
  27.