From bsanchez@clari.net Sun Oct 22 11:12:04 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!clari!bsanchez From: bsanchez@clari.net (Bruno Sánchez) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct22.111204.9468@clari.net> Date: Sun, 22 Oct 1995 11:12:04 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N 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. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- Bruno Sánchez | bsanchez@clari.net PGP Key fingerprint: C486 56E2 C657 A591 "Keep the channels open." From dramirez@panix.com Mon Oct 23 19:53:04 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!panix!dramirez From: dramirez@panix.com (Dave Ramírez) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct23.195304.5815@panix.com> Date: Mon, 23 Oct 1995 19:53:04 GMT References: <1995Oct22.111204.9468@clari.net> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Oct22.111204.9468@clari.net>, bsanchez@clari.net (Bruno Sánchez) writes: > 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. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Dave Ramírez Tape trading list upon request. SASE required for international mail. From kstewart@unam.mx Wed Oct 25 20:20:04 1995 Path: ashpoly!cascade!bigsur!unam!kstewart From: kstewart@unam.mx (Kirsty Stewart) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct25.202004.6021@unam.mx> Date: Wed, 25 Oct 1995 20:20:04 GMT References: <1995Oct22.111204.9468@clari.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995Oct22.111204.9468@clari.net>, bsanchez@clari.net (Bruno Sánchez) writes: > 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. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! Top-posters will be placed in my ~/.killfile without notice. -- === Kirsty Stewart === Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA) "There are 14 nodes and only 10 countries. Count again." From jkuznetsov@cern.ch Thu Oct 26 12:53:04 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!jkuznetsov From: jkuznetsov@cern.ch (Julien Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct26.125304.4285@cern.ch> Date: Thu, 26 Oct 1995 12:53:04 GMT References: <1995Oct22.111204.9468@clari.net> <1995Oct25.202004.6021@unam.mx> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Oct25.202004.6021@unam.mx>, kstewart@unam.mx (Kirsty Stewart) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! > Top-posters will be placed in my ~/.killfile without notice. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Julien Kuznetsov "When every node is whole, the channel opens." Amiga 1200 (Blizzard 030/50) / NEXTSTEP 3.3 From smoreno@panix.com Sat Oct 28 00:38:04 1995 Path: ashpoly!cascade!bigsur!panix!smoreno From: smoreno@panix.com (Sven Moreno) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct28.003804.1518@panix.com> Date: Sat, 28 Oct 1995 00:38:04 GMT References: <1995Oct22.111204.9468@clari.net> <1995Oct25.202004.6021@unam.mx> <1995Oct26.125304.4285@cern.ch> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Oct26.125304.4285@cern.ch>, jkuznetsov@cern.ch (Julien Kuznetsov) 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. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Sven Moreno | smoreno@panix.com PGP Key fingerprint: F9C3 6F64 C4F0 47CF "Keep the channels open."