From yschneider@mindspring.com Sat Jan 28 00:02:14 1995
Path: ashpoly!cascade!brgate!saturno!mindspring!yschneider
From: yschneider@mindspring.com (Yuki Schneider)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jan28.000214.5422@mindspring.com>
Date: Sat, 28 Jan 1995 00:02:14 GMT
Organization: MindSpring Enterprises
NNTP-Posting-Host: mindspring.com
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Lines: 10

Hardware disassembly report for Motorola hardware hackers.

Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14.
This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream.

Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet.

-- 
Yuki Schneider -- MindSpring Enterprises
"The carrier frequency does not drift by accident."

From rkuznetsov@mindspring.com Sun Jan 29 17:11:14 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!rkuznetsov
From: rkuznetsov@mindspring.com (Rodrigo Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jan29.171114.4273@mindspring.com>
Date: Sun, 29 Jan 1995 17:11:14 GMT
References: <1995Jan28.000214.5422@mindspring.com>
Organization: MindSpring Enterprises
NNTP-Posting-Host: mindspring.com
X-Newsreader: Netscape 1.1N
Lines: 9

In article <1995Jan28.000214.5422@mindspring.com>, yschneider@mindspring.com (Yuki Schneider) writes:
> Hardware disassembly report for Motorola hardware hackers.

If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack!

-- 
Rodrigo Kuznetsov | rkuznetsov@mindspring.com
PGP Key fingerprint: 4CAB 0FC0 A26C 1457
"Keep the channels open."