1994-04-22 - Re: cryptophone ideas

Header Data

From: “Perry E. Metzger” <perry@snark.imsi.com>
To: jamiel@sybase.com (Jamie Lawrence)
Message Hash: 1c8fbfcc471b3bfb02580f4e7412468bcbe523727dae586dff5e7f053b4a5ea4
Message ID: <9404221109.AA01026@snark.imsi.com>
Reply To: <9404220013.AA23000@ralph.sybgate.sybase.com>
UTC Datetime: 1994-04-22 11:09:51 UTC
Raw Date: Fri, 22 Apr 94 04:09:51 PDT

Raw message

From: "Perry E. Metzger" <perry@snark.imsi.com>
Date: Fri, 22 Apr 94 04:09:51 PDT
To: jamiel@sybase.com (Jamie Lawrence)
Subject: Re: cryptophone ideas
In-Reply-To: <9404220013.AA23000@ralph.sybgate.sybase.com>
Message-ID: <9404221109.AA01026@snark.imsi.com>
MIME-Version: 1.0
Content-Type: text/plain

Jamie Lawrence says:
> At  8:06 PM 04/21/94 -0400, Perry E. Metzger wrote:
> >Hacking and reprogramming all the base stations is impossible. Its not
> >the same as reprogramming the phone. Its the difference between
> >learning French and getting everyone in the world to learn French.
> >
> >Perry
> Agreed, but two people can definitely learn french, and you can send
> a french dictionary to your friends... Passing instructions a la

Let me be blunt. You aren't going to deploy a complete new cellular
phone system on your own. If you do think you are, you have lost your
mind. You can't just hack a CDMA or similar phone to make it secure --
the other end has to be speaking the same protocol. The other end is a
very expensive station built and paid for by your local cellular
provider which is unlikely to be easily modified by you the customer.

You aren't going to be able to run your own cellphone system, either.