From mjohansson@utexas.edu Sun Sep 22 17:45:37 1996 Path: ashpoly!cascade!bigsur!utexas!mjohansson From: mjohansson@utexas.edu (Marta Johansson) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep22.174537.3493@utexas.edu> Date: Sun, 22 Sep 1996 17:45:37 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 11 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. 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'? -- === Marta Johansson === Dept of Electrical Engineering, University of Texas at Austin "In theory there is no difference between theory and practice." From ntanaka@rwth-aachen.de Tue Sep 24 12:24:37 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!ntanaka From: ntanaka@rwth-aachen.de (Natalia Tanaka) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep24.122437.7332@rwth-aachen.de> Date: Tue, 24 Sep 1996 12:24:37 GMT References: <1996Sep22.174537.3493@utexas.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Sep22.174537.3493@utexas.edu>, mjohansson@utexas.edu (Marta Johansson) 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. -- Natalia Tanaka | ntanaka@rwth-aachen.de PGP Key fingerprint: 65E9 847D 9BE0 7EBD "Keep the channels open." From bwatanabe@titech.ac.jp Wed Sep 25 18:38:37 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!bwatanabe From: bwatanabe@titech.ac.jp (Bruno Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep25.183837.2585@titech.ac.jp> Date: Wed, 25 Sep 1996 18:38:37 GMT References: <1996Sep22.174537.3493@utexas.edu> <1996Sep24.122437.7332@rwth-aachen.de> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Sep24.122437.7332@rwth-aachen.de>, ntanaka@rwth-aachen.de (Natalia Tanaka) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Bruno Watanabe Opinions expressed are solely my own and not those of Tokyo Institute of Technology Computer Centre. ------------------------------------------------------------ From rsilva@unam.mx Fri Sep 27 02:47:37 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!rsilva From: rsilva@unam.mx (Renata Silva) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep27.024737.2988@unam.mx> Date: Fri, 27 Sep 1996 02:47:37 GMT References: <1996Sep22.174537.3493@utexas.edu> <1996Sep24.122437.7332@rwth-aachen.de> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Sep24.122437.7332@rwth-aachen.de>, ntanaka@rwth-aachen.de (Natalia Tanaka) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Renata Silva Practical Peripherals 14.4 @ 9600 Telebit bps "They will send a copy in my place." From jbrennan@inria.fr Fri Sep 27 21:09:37 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!jbrennan From: jbrennan@inria.fr (Joachim Brennan) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Sep27.210937.1812@inria.fr> Date: Fri, 27 Sep 1996 21:09:37 GMT References: <1996Sep22.174537.3493@utexas.edu> <1996Sep24.122437.7332@rwth-aachen.de> <1996Sep25.183837.2585@titech.ac.jp> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Sep25.183837.2585@titech.ac.jp>, bwatanabe@titech.ac.jp (Bruno Watanabe) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Joachim Brennan Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------