From thernandez@u-tokyo.ac.jp Tue Oct 24 00:42:43 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!thernandez From: thernandez@u-tokyo.ac.jp (Tobias Hernández) Newsgroups: comp.sys.m68k Subject: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct24.004243.5104@u-tokyo.ac.jp> Date: Tue, 24 Oct 1995 00:42:43 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Hardware disassembly report for Motorola hardware hackers. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Did Marcus take the decryption EPROM with him when he left the lab? -- Tobias Hernández Tape trading list upon request. SASE required for international mail. From ejohansson@illinois.edu Wed Oct 25 02:06:43 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!illinois!ejohansson From: ejohansson@illinois.edu (Emi Johansson) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct25.020643.2727@illinois.edu> Date: Wed, 25 Oct 1995 02:06:43 GMT References: <1995Oct24.004243.5104@u-tokyo.ac.jp> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Oct24.004243.5104@u-tokyo.ac.jp>, thernandez@u-tokyo.ac.jp (Tobias Hernández) 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! -- Emi Johansson Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign. ------------------------------------------------------------ From tsmirnov@pacbell.net Fri Oct 27 00:34:43 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!tsmirnov From: tsmirnov@pacbell.net (Tobias Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct27.003443.8567@pacbell.net> Date: Fri, 27 Oct 1995 00:34:43 GMT References: <1995Oct24.004243.5104@u-tokyo.ac.jp> <1995Oct25.020643.2727@illinois.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Oct25.020643.2727@illinois.edu>, ejohansson@illinois.edu (Emi Johansson) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Tobias Smirnov -- Pacific Bell Internet Services "The carrier frequency does not drift by accident." From vweber@u-tokyo.ac.jp Sat Oct 28 08:13:43 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!vweber From: vweber@u-tokyo.ac.jp (Valeria Weber) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct28.081343.7763@u-tokyo.ac.jp> Date: Sat, 28 Oct 1995 08:13:43 GMT References: <1995Oct24.004243.5104@u-tokyo.ac.jp> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Oct24.004243.5104@u-tokyo.ac.jp>, thernandez@u-tokyo.ac.jp (Tobias Hernández) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Valeria Weber Practical Peripherals 14.4 @ ISDN 64k bps "Hold for relay." From oivanov@rwth-aachen.de Sat Oct 28 14:43:43 1995 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!oivanov From: oivanov@rwth-aachen.de (Olga Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct28.144343.8509@rwth-aachen.de> Date: Sat, 28 Oct 1995 14:43:43 GMT References: <1995Oct24.004243.5104@u-tokyo.ac.jp> <1995Oct25.020643.2727@illinois.edu> <1995Oct27.003443.8567@pacbell.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Oct27.003443.8567@pacbell.net>, tsmirnov@pacbell.net (Tobias Smirnov) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Olga Ivanov -- RWTH Aachen Informatik "Hardware is temporary. The signal survives."