From nramirez@berkeley.edu Wed Nov 06 14:18:56 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!berkeley!nramirez
From: nramirez@berkeley.edu (Nadia Ramírez)
Newsgroups: comp.sys.m68k
Subject: Observation: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Nov06.141856.8105@berkeley.edu>
Date: Wed, 06 Nov 1996 14:18:56 GMT
Organization: UC Berkeley Department of EECS
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Hardware disassembly report for Motorola hardware hackers.

Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.
This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream.

Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'?

-- 
Nadia Ramírez
Tape trading list upon request. SASE required for international mail.

From kandersson@uni-hamburg.de Wed Nov 06 17:33:56 1996
Path: ashpoly!cascade!brgate!saturno!uni-hamburg!kandersson
From: kandersson@uni-hamburg.de (Kenji Andersson)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Nov06.173356.4807@uni-hamburg.de>
Date: Wed, 06 Nov 1996 17:33:56 GMT
References: <1996Nov06.141856.8105@berkeley.edu>
Organization: Universität Hamburg Fachbereich Informatik
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In article <1996Nov06.141856.8105@berkeley.edu>, nramirez@berkeley.edu (Nadia Ramírez) writes:
> Hardware disassembly report for Motorola hardware hackers.
> Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.

Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984.

-- 
Kenji Andersson | kandersson@uni-hamburg.de
PGP Key fingerprint: 9F3C 3A84 DA27 3D21
"Keep the channels open."

From mivanov@panix.com Wed Nov 06 20:23:56 1996
Path: ashpoly!cascade!transat!sunet!nordrelay!panix!mivanov
From: mivanov@panix.com (Marta Ivanov)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Nov06.202356.1044@panix.com>
Date: Wed, 06 Nov 1996 20:23:56 GMT
References: <1996Nov06.141856.8105@berkeley.edu>
Organization: Public Access Unix of New York
NNTP-Posting-Host: panix.com
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In article <1996Nov06.141856.8105@berkeley.edu>, nramirez@berkeley.edu (Nadia Ramírez) writes:
> Hardware disassembly report for Motorola hardware hackers.
> Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF.

Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984.

-- 
Marta Ivanov
Tape trading list upon request. SASE required for international mail.

From tlopez@pipeline.com Thu Nov 07 14:51:56 1996
Path: ashpoly!cascade!brgate!saturno!pipeline!tlopez
From: tlopez@pipeline.com (Takeshi López)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board
Message-ID: <1996Nov07.145156.9653@pipeline.com>
Date: Thu, 07 Nov 1996 14:51:56 GMT
References: <1996Nov06.141856.8105@berkeley.edu> <1996Nov06.202356.1044@panix.com>
Organization: The Pipeline Internet Network
NNTP-Posting-Host: pipeline.com
X-Newsreader: WinVN 0.99.5
Lines: 11

In article <1996Nov06.202356.1044@panix.com>, mivanov@panix.com (Marta Ivanov) writes:
> Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984.

Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984.

My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise!

-- 
Takeshi López
Opinions expressed are solely my own and not those of The Pipeline Internet Network.
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