From acampbell@pacbell.net Tue Mar 19 17:37:17 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!pacbell!acampbell From: acampbell@pacbell.net (Anja Campbell) Newsgroups: comp.sys.m68k Subject: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Mar19.173717.8504@pacbell.net> Date: Tue, 19 Mar 1996 17:37:17 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- Anja Campbell Tape trading list upon request. SASE required for international mail. From gandersson@titech.ac.jp Wed Mar 20 22:42:17 1996 Path: ashpoly!cascade!brgate!saturno!titech!gandersson From: gandersson@titech.ac.jp (Göran Andersson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Mar20.224217.7072@titech.ac.jp> Date: Wed, 20 Mar 1996 22:42:17 GMT References: <1996Mar19.173717.8504@pacbell.net> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Mar19.173717.8504@pacbell.net>, acampbell@pacbell.net (Anja Campbell) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. 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! -- Göran Andersson Opinions expressed are solely my own and not those of Tokyo Institute of Technology Computer Centre. ------------------------------------------------------------ From landersson@rwth-aachen.de Fri Mar 22 14:53:17 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!rwth-aachen!landersson From: landersson@rwth-aachen.de (Lucia Andersson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Mar22.145317.3000@rwth-aachen.de> Date: Fri, 22 Mar 1996 14:53:17 GMT References: <1996Mar19.173717.8504@pacbell.net> <1996Mar20.224217.7072@titech.ac.jp> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Mar20.224217.7072@titech.ac.jp>, gandersson@titech.ac.jp (Göran Andersson) 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. -- Lucia Andersson Tape trading list upon request. SASE required for international mail. From sgarcia@utexas.edu Sat Mar 23 12:50:17 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!sgarcia From: sgarcia@utexas.edu (Steve García) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Mar23.125017.1856@utexas.edu> Date: Sat, 23 Mar 1996 12:50:17 GMT References: <1996Mar19.173717.8504@pacbell.net> <1996Mar20.224217.7072@titech.ac.jp> <1996Mar22.145317.3000@rwth-aachen.de> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Mar22.145317.3000@rwth-aachen.de>, landersson@rwth-aachen.de (Lucia Andersson) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Steve García Tape trading list upon request. SASE required for international mail. From slindqvist@inria.fr Sun Mar 24 10:23:17 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!slindqvist From: slindqvist@inria.fr (Sven Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Mar24.102317.8622@inria.fr> Date: Sun, 24 Mar 1996 10:23:17 GMT References: <1996Mar19.173717.8504@pacbell.net> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Mar19.173717.8504@pacbell.net>, acampbell@pacbell.net (Anja Campbell) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Sven Lindqvist SupraFAXModem 28.8 @ ISDN 64k bps "When every node is whole, the channel opens."