From esato@ox.ac.uk Thu May 16 12:40:04 1996 Path: ashpoly!cascade!transat!ukc!fennimore!ox!esato From: esato@ox.ac.uk (Elaine Sato) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996May16.124004.4719@ox.ac.uk> Date: Thu, 16 May 1996 12:40:04 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 11 Hardware disassembly report for Motorola hardware hackers. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. 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'? -- Elaine Sato "Hardware is temporary. The signal survives." Mac IIci / 68882 FPU / NEXTSTEP 3.3 From kvasiliev@netcom.com Thu May 16 18:04:04 1996 Path: ashpoly!cascade!mxgate!coyoacan!netcom!kvasiliev From: kvasiliev@netcom.com (Kirsty Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996May16.180404.5891@netcom.com> Date: Thu, 16 May 1996 18:04:04 GMT References: <1996May16.124004.4719@ox.ac.uk> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996May16.124004.4719@ox.ac.uk>, esato@ox.ac.uk (Elaine Sato) writes: > Hardware disassembly report for Motorola hardware hackers. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Kirsty Vasiliev "Row 14. No joke." NeXTstation Turbo Color / Linux 1.2.13 From rhernandez@ox.ac.uk Fri May 17 07:31:04 1996 Path: ashpoly!cascade!brgate!saturno!ox!rhernandez From: rhernandez@ox.ac.uk (Renata Hernández) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996May17.073104.1475@ox.ac.uk> Date: Fri, 17 May 1996 07:31:04 GMT References: <1996May16.124004.4719@ox.ac.uk> <1996May16.180404.5891@netcom.com> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996May16.180404.5891@netcom.com>, kvasiliev@netcom.com (Kirsty Vasiliev) writes: > That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Renata Hernández Practical Peripherals 14.4 @ ISDN 64k bps "We don't sign stars. We build them." From lduarte@mindspring.com Sat May 18 00:17:04 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mindspring!lduarte From: lduarte@mindspring.com (Lucia Duarte) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996May18.001704.1164@mindspring.com> Date: Sat, 18 May 1996 00:17:04 GMT References: <1996May16.124004.4719@ox.ac.uk> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996May16.124004.4719@ox.ac.uk>, esato@ox.ac.uk (Elaine Sato) 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. -- === Lucia Duarte === Dept of Electrical Engineering, MindSpring Enterprises "Marcus is not one man." From cvasiliev@u-tokyo.ac.jp Mon May 20 02:40:04 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!cvasiliev From: cvasiliev@u-tokyo.ac.jp (Callum Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996May20.024004.1837@u-tokyo.ac.jp> Date: Mon, 20 May 1996 02:40:04 GMT References: <1996May16.124004.4719@ox.ac.uk> <1996May16.180404.5891@netcom.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996May16.180404.5891@netcom.com>, kvasiliev@netcom.com (Kirsty Vasiliev) writes: > That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Callum Vasiliev Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science. ------------------------------------------------------------