[comp.dcom.telecom] Secure Cellular Phones

wmartin@ALMSA-1.ARPA (Will Martin -- AMXAL-RI) (09/28/87)

Note: I had sent this to the "buit1.bu.edu" address last week and it
hasn't been delivered there as of this writing, so I'm re-sending it
to the new MIT-XX address. If the older version shows up, please
delete the duplicate. Thanks!

Thought the Telecom readership might like to see this --
From the 21 Sept. '87 issue (Vol. 1 No. 26) of Federal Computer Week, pg 1:

MOTOROLA UNVEILS SECURE CELLULAR PHONES FOR NSA
by Bob Brewin

Motorola Inc. displayed a mobile cellular telephone outfitted with the
National Security Agency's STU III encryption system at last week's Air
Force Association convention in Washington, D.C. The new product offers
"the highest level of security commercially available today," the
company said.

But Motorola would not say much about the product, referring all
questions on price or the size of any ordrs to "our customer." That
customer, the National Security Agency, declined to answer any verbal
questions, suggesting instead that they be presented in writing.

However, Motorola's thin promotional material and the mock-up on display
at the convention did offer some insights into the company's DYNA SEC
Secure Voice/Data Cellular Terminal STU III. The cellular heart of the
system is Motorola's standard Mini TAC 600XL system, which consists of a
transceiver, usually mounted in the trunk, a handset and hang-up cup.

Attached to this standard commercial product is the Secure Cellular
Terminal -- essentially a black box containing NSA-designed ad approved
encryption chips -- which interfaces with the Secure Message Center. The
terminal also contains an RS232 port, which allows the attachment of
computers and other data devices.

The message center has a digital readout displaying call progress and
terminal authentication messages. It also contains a series of push
buttons to control the clear, secure voice, and secure data modes.
Finally, the SMC holds a crypto-ignition key, which lets the user
activate the secure operating modes of the terminal.

Motorola said the STU III cellular system transmissions "are totally
unintelligible to an unauthorized listener" if the signal is monitored
over the cellular or the public-switched telephone network.

[Rather than quote the rest of the article, I'll summarize. James
Bamford, author of THE PUZZLE PALACE, said that the encryption is
virtually impenetrable. It also provides much better decrypted voice
quality than earlier systems. It will be installed in the cars of high-level
government officials first, possibly spreading down to CIA, FBI or DEA field
users depending on price. This is an outgrowth of several years' interest in
cellular encryption by the NSA. No info on price or possibility of this
getting into the hands of non-government users.]

Personal note: I can understand the secrecy regarding technical details,
but can't see why the price would be restricted information.

Regards, Will Martin

henry@utzoo.UUCP (10/01/87)

> ... I can understand the secrecy regarding technical details,
> but can't see why the price would be restricted information.

To interfere with the inevitable Congressional investigation of why it
cost so much, of course!

				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,decvax,pyramid}!utzoo!henry