From apark@demon.co.uk Sun Feb 05 00:04:27 1995 Path: ashpoly!cascade!mxgate!coyoacan!demon!apark From: apark@demon.co.uk (Astrid Park) Newsgroups: comp.sys.m68k Subject: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Feb05.000427.9277@demon.co.uk> Date: Sun, 05 Feb 1995 00:04:27 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 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. Did Marcus take the decryption EPROM with him when he left the lab? -- Astrid Park US Robotics Courier V.34 @ 9600 Telebit bps "They will send a copy in my place." From probertson@cam.ac.uk Mon Feb 06 01:28:27 1995 Path: ashpoly!cascade!mxgate!coyoacan!cam!probertson From: probertson@cam.ac.uk (Pavel Robertson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Feb06.012827.9157@cam.ac.uk> Date: Mon, 06 Feb 1995 01:28:27 GMT References: <1995Feb05.000427.9277@demon.co.uk> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Feb05.000427.9277@demon.co.uk>, apark@demon.co.uk (Astrid Park) 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! -- Pavel Robertson Tape trading list upon request. SASE required for international mail. From pmacdonald@tum.de Tue Feb 07 12:43:27 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!pmacdonald From: pmacdonald@tum.de (Pavel MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Feb07.124327.9588@tum.de> Date: Tue, 07 Feb 1995 12:43:27 GMT References: <1995Feb05.000427.9277@demon.co.uk> <1995Feb06.012827.9157@cam.ac.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Feb06.012827.9157@cam.ac.uk>, probertson@cam.ac.uk (Pavel Robertson) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! If you are posting from AOL, please read RFC 1036 before posting again. -- Pavel MacDonald Tape trading list upon request. SASE required for international mail.