1994-06-19 - Re: your mail

Header Data

From: Jim choate <ravage@bga.com>
To: jef@ee.lbl.gov (Jef Poskanzer)
Message Hash: a07971fb95b67964bd7acc81305dd2e12317d485de42c85fef0c2541f3c6435c
Message ID: <199406191451.JAA01206@zoom.bga.com>
Reply To: <199406182312.QAA04517@hot.ee.lbl.gov>
UTC Datetime: 1994-06-19 14:51:41 UTC
Raw Date: Sun, 19 Jun 94 07:51:41 PDT

Raw message

From: Jim choate <ravage@bga.com>
Date: Sun, 19 Jun 94 07:51:41 PDT
To: jef@ee.lbl.gov (Jef Poskanzer)
Subject: Re: your mail
In-Reply-To: <199406182312.QAA04517@hot.ee.lbl.gov>
Message-ID: <199406191451.JAA01206@zoom.bga.com>
MIME-Version: 1.0
Content-Type: text


> >1.C How about if we take the hiss that you find between stations on an 
> >FM receiver, and digitize them through a PC soundcard? 
> 
> Hmm.  And if an attacker discovers you're using this method, and
> decides to send out a signal on the same frequency?  You might find
> your "random" numbers are suddenly all zeros...
> ---
> Jef
> 
Band hop. Build a variable modulo counter and use its output to reset its 
modulo and hop the band around pseudo-randomly. Unless they know or stumble
on the particular design you are using it will be very difficult to track.

Since music, energy wise, approaches 1/f^2 it might be ok to even use the
actual stations.

Thread

• Return to June 1994

• Return to “Jef Poskanzer <jef@ee.lbl.gov>”
• Return to “Jim choate <ravage@bga.com>”
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• Return to “Phil Karn <karn@qualcomm.com>”

• 1994-06-18 (Sat, 18 Jun 94 16:13:05 PDT) - No Subject - Jef Poskanzer <jef@ee.lbl.gov>
  • 1994-06-19 (Sun, 19 Jun 94 07:51:41 PDT) - Re: your mail - Jim choate <ravage@bga.com>
    • 1994-06-22 (Tue, 21 Jun 94 19:14:38 PDT) - Re: your mail - Phil Karn <karn@qualcomm.com>
      • 1994-06-22 (Wed, 22 Jun 94 05:40:59 PDT) - Re: your mail - khijol!erc (Ed Carp [Sysadmin])
        • 1994-06-22 (Wed, 22 Jun 94 11:13:23 PDT) - Re: your mail - Jim choate <ravage@bga.com>
          • 1994-06-23 (Thu, 23 Jun 94 15:15:39 PDT) - Re: your mail - Phil Karn <karn@qualcomm.com>
      • 1994-06-22 (Wed, 22 Jun 94 05:50:00 PDT) - Re: your mail - “Perry E. Metzger” <perry@imsi.com>