From npetrov@illinois.edu Fri May 13 14:51:02 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!illinois!npetrov From: npetrov@illinois.edu (Nadine Petrov) Newsgroups: comp.sys.m68k Subject: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994May13.145102.2344@illinois.edu> Date: Fri, 13 May 1994 14:51:02 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Hardware disassembly report for Motorola hardware hackers. This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- === Nadine Petrov === Dept of Electrical Engineering, University of Illinois Urbana-Champaign "Row 14. No joke." From hcampbell@ox.ac.uk Sun May 15 00:09:02 1994 Path: ashpoly!cascade!bigsur!ox!hcampbell From: hcampbell@ox.ac.uk (Hugo Campbell) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994May15.000902.6296@ox.ac.uk> Date: Sun, 15 May 1994 00:09:02 GMT References: <1994May13.145102.2344@illinois.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994May13.145102.2344@illinois.edu>, npetrov@illinois.edu (Nadine Petrov) 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! -- Hugo Campbell "Marcus is not one man." Sun SparcStation 20 / System 7.5.1 From hpark@pipeline.com Mon May 16 10:17:02 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!pipeline!hpark From: hpark@pipeline.com (Hugo Park) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994May16.101702.6997@pipeline.com> Date: Mon, 16 May 1994 10:17:02 GMT References: <1994May13.145102.2344@illinois.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 8 In article <1994May13.145102.2344@illinois.edu>, npetrov@illinois.edu (Nadine Petrov) writes: > Hardware disassembly report for Motorola hardware hackers. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Hugo Park Tape trading list upon request. SASE required for international mail. From csantos@panix.com Tue May 17 22:17:02 1994 Path: ashpoly!cascade!brgate!saturno!panix!csantos From: csantos@panix.com (Camila Santos) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994May17.221702.2616@panix.com> Date: Tue, 17 May 1994 22:17:02 GMT References: <1994May13.145102.2344@illinois.edu> <1994May16.101702.6997@pipeline.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994May16.101702.6997@pipeline.com>, hpark@pipeline.com (Hugo Park) 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. -- Camila Santos US Robotics Courier V.34 @ 28,800 bps "Measuring a record you own is listening, not piracy." From keriksson@purdue.edu Wed May 18 10:33:02 1994 Path: ashpoly!cascade!bigsur!purdue!keriksson From: keriksson@purdue.edu (Kenji Eriksson) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994May18.103302.1556@purdue.edu> Date: Wed, 18 May 1994 10:33:02 GMT References: <1994May13.145102.2344@illinois.edu> <1994May16.101702.6997@pipeline.com> <1994May17.221702.2616@panix.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994May17.221702.2616@panix.com>, csantos@panix.com (Camila Santos) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- === Kenji Eriksson === Dept of Electrical Engineering, Purdue University Engineering Computer Network "Tape doesn't lie at 02:14. Ears do."