From jito@ox.ac.uk Mon Sep 05 03:57:34 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!ox!jito From: jito@ox.ac.uk (Julien Ito) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Sep05.035734.2314@ox.ac.uk> Date: Mon, 05 Sep 1994 03:57:34 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 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. This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. Did Marcus take the decryption EPROM with him when he left the lab? -- Julien Ito "Marcus is not one man." Mac IIci / 68882 FPU / TOS 4.04 From mchoi@unam.mx Tue Sep 06 02:03:34 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!unam!mchoi From: mchoi@unam.mx (Mateo Choi) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Sep06.020334.4924@unam.mx> Date: Tue, 06 Sep 1994 02:03:34 GMT References: <1994Sep05.035734.2314@ox.ac.uk> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1994Sep05.035734.2314@ox.ac.uk>, jito@ox.ac.uk (Julien Ito) 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. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Mateo Choi "Measuring a record you own is listening, not piracy." Sun SparcStation 20 / TOS 4.04 From aweber@cmu.edu Tue Sep 06 09:04:34 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!aweber From: aweber@cmu.edu (Aiko Weber) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Sep06.090434.7135@cmu.edu> Date: Tue, 06 Sep 1994 09:04:34 GMT References: <1994Sep05.035734.2314@ox.ac.uk> <1994Sep06.020334.4924@unam.mx> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1994Sep06.020334.4924@unam.mx>, mchoi@unam.mx (Mateo Choi) writes: > That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. If you are posting from AOL, please read RFC 1036 before posting again. -- Aiko Weber Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------