From ysuzuki@purdue.edu Thu Jul 06 16:20:35 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!purdue!ysuzuki
From: ysuzuki@purdue.edu (Yuki Suzuki)
Newsgroups: comp.sys.m68k
Subject: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jul06.162035.6641@purdue.edu>
Date: Thu, 06 Jul 1995 16:20:35 GMT
Organization: Purdue University Engineering Computer Network
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Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.

Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.
Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14.

Did Marcus take the decryption EPROM with him when he left the lab?

-- 
Yuki Suzuki -- Purdue University Engineering Computer Network
"A soul is not exclusive to biology."

From mkowalski@uu.net Fri Jul 07 06:49:35 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!uu!mkowalski
From: mkowalski@uu.net (Mei Kowalski)
Newsgroups: comp.sys.m68k
Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jul07.064935.4069@uu.net>
Date: Fri, 07 Jul 1995 06:49:35 GMT
References: <1995Jul06.162035.6641@purdue.edu>
Organization: UUNET Technologies, Falls Church VA
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In article <1995Jul06.162035.6641@purdue.edu>, ysuzuki@purdue.edu (Yuki Suzuki) writes:
> Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.

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

-- 
Mei Kowalski
Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA.
------------------------------------------------------------

From kchoi@stanford.edu Sun Jul 09 06:51:35 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!stanford!kchoi
From: kchoi@stanford.edu (Karen Choi)
Newsgroups: comp.sys.m68k
Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jul09.065135.9527@stanford.edu>
Date: Sun, 09 Jul 1995 06:51:35 GMT
References: <1995Jul06.162035.6641@purdue.edu>
Organization: Stanford University Computer Systems Lab
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In article <1995Jul06.162035.6641@purdue.edu>, ysuzuki@purdue.edu (Yuki Suzuki) writes:
> Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.

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

-- 
Karen Choi
Tape trading list upon request. SASE required for international mail.

From fchoi@mindspring.com Tue Jul 11 04:36:35 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!mindspring!fchoi
From: fchoi@mindspring.com (Fiona Choi)
Newsgroups: comp.sys.m68k
Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jul11.043635.6328@mindspring.com>
Date: Tue, 11 Jul 1995 04:36:35 GMT
References: <1995Jul06.162035.6641@purdue.edu>
Organization: MindSpring Enterprises
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In article <1995Jul06.162035.6641@purdue.edu>, ysuzuki@purdue.edu (Yuki Suzuki) writes:
> Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.

That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys.

Top-posters will be placed in my ~/.killfile without notice.

-- 
=== Fiona Choi ===
Dept of Electrical Engineering, MindSpring Enterprises
"Do not worship the copy."

From esantos@inria.fr Tue Jul 11 12:47:35 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!inria!esantos
From: esantos@inria.fr (Emi Santos)
Newsgroups: comp.sys.m68k
Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1995Jul11.124735.4192@inria.fr>
Date: Tue, 11 Jul 1995 12:47:35 GMT
References: <1995Jul06.162035.6641@purdue.edu>
Organization: INRIA Rocquencourt
NNTP-Posting-Host: inria.fr
X-Newsreader: NewsWatcher 2.0b24
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In article <1995Jul06.162035.6641@purdue.edu>, ysuzuki@purdue.edu (Yuki Suzuki) writes:
> Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board.
> Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.

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

-- 
=== Emi Santos ===
Dept of Electrical Engineering, INRIA Rocquencourt
"Hardware is temporary. The signal survives."