From ahernandez@titech.ac.jp Mon Jul 01 12:40:41 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!titech!ahernandez From: ahernandez@titech.ac.jp (Anja Hernández) Newsgroups: comp.sys.m68k Subject: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Jul01.124041.3175@titech.ac.jp> Date: Mon, 01 Jul 1996 12:40:41 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 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. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Did Marcus take the decryption EPROM with him when he left the lab? -- Anja Hernández Tape trading list upon request. SASE required for international mail. From vlarsson@demon.co.uk Tue Jul 02 09:03:41 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!demon!vlarsson From: vlarsson@demon.co.uk (Valeria Larsson) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Jul02.090341.9120@demon.co.uk> Date: Tue, 02 Jul 1996 09:03:41 GMT References: <1996Jul01.124041.3175@titech.ac.jp> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Jul01.124041.3175@titech.ac.jp>, ahernandez@titech.ac.jp (Anja 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. -- Valeria Larsson Tape trading list upon request. SASE required for international mail. From lpark@berkeley.edu Thu Jul 04 05:25:41 1996 Path: ashpoly!cascade!bigsur!berkeley!lpark From: lpark@berkeley.edu (Lars Park) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Jul04.052541.4642@berkeley.edu> Date: Thu, 04 Jul 1996 05:25:41 GMT References: <1996Jul01.124041.3175@titech.ac.jp> <1996Jul02.090341.9120@demon.co.uk> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Jul02.090341.9120@demon.co.uk>, vlarsson@demon.co.uk (Valeria Larsson) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Lars Park "The carrier frequency does not drift by accident." Atari TT030 / FreeBSD 2.1 From mramirez@cern.ch Fri Jul 05 06:47:41 1996 Path: ashpoly!cascade!brgate!saturno!cern!mramirez From: mramirez@cern.ch (Mateo Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Jul05.064741.9340@cern.ch> Date: Fri, 05 Jul 1996 06:47:41 GMT References: <1996Jul01.124041.3175@titech.ac.jp> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Jul01.124041.3175@titech.ac.jp>, ahernandez@titech.ac.jp (Anja 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. -- Mateo Ramírez -- European Laboratory for Particle Physics, Geneva "5 sigma is a discovery. 7 is a question."