1994-04-22 - Re: cryptophone ideas

Header Data

From: “Perry E. Metzger” <perry@snark.imsi.com>
To: jamiel@sybase.com (Jamie Lawrence)
Message Hash: 58fb99527f99378acec8499127988dc040714c407a5ee2249b10bd7b1a99e5d8
Message ID: <9404221801.AA01603@snark.imsi.com>
Reply To: <9404221742.AA02556@ralph.sybgate.sybase.com>
UTC Datetime: 1994-04-22 18:02:34 UTC
Raw Date: Fri, 22 Apr 94 11:02:34 PDT

Raw message

From: "Perry E. Metzger" <perry@snark.imsi.com>
Date: Fri, 22 Apr 94 11:02:34 PDT
To: jamiel@sybase.com (Jamie Lawrence)
Subject: Re: cryptophone ideas
In-Reply-To: <9404221742.AA02556@ralph.sybgate.sybase.com>
Message-ID: <9404221801.AA01603@snark.imsi.com>
MIME-Version: 1.0
Content-Type: text/plain

Jamie Lawrence says:
> I am not sure if I am not explaining myself clearly or if you are being
> intentionally dense.
> The point is that if we know our stuff, have way too much liesure time and
> are dedicated to difficult solutions, my cellular and your cellular could
> be hacked to make use of the DSP as a co/dec for what ever we wish
> it to.

Analog cellphones do not have real DSP in them. They are ANALOG you
see. The digital cellphones can't be encrypted without cooperation of
the base station.