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Article #619Re: On Hardware Implementations of DES...
From: Phil Karn
Date: Fri, 17 Apr 1992 02:53
Date: Fri, 17 Apr 1992 02:53
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In article <1992Apr16.221440.27205@acsu.buffalo.edu> opnsmurf@ubvmsb.cc.buffalo.edu (Da Smurf) writes: >>threats in your own situation. E.g., how do you *know* that somebody >>hasn't hacked the 'des' command on your workstation to record keys? > Having the source (and going through it) is one way to be sure... Ah, but how do you know that somebody hasn't hacked your *compiler* too? (See Ken Thompson's Turing Award speech for the details.) And of course you may have a perfectly trustworthy DES program running on an completely untrustworthy machine or operating system... Phil
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Path: arc1-ca.pugleaf.net!sparky!uunet!think.com!mips!swrinde!network.ucsd.edu!qualcom.qualcomm.com!chicago.qualcomm.com!karn From: karn@chicago.qualcomm.com (Phil Karn) Newsgroups: sci.crypt Subject: Re: On Hardware Implementations of DES... Message-ID: <1992Apr17.025348.19118@qualcomm.com> Date: 17 Apr 92 02:53:48 GMT References: <1992Apr16.075856.1768@acsu.buffalo.edu> <1992Apr16.165945.23208@qualcomm.com> <1992Apr16.221440.27205@acsu.buffalo.edu> Sender: news@qualcomm.com Organization: Qualcomm, Inc Lines: 11 Nntp-Posting-Host: chicago.qualcomm.com