From reriksson@demon.co.uk Fri Jul 14 21:33:20 1995 Path: ashpoly!cascade!transat!ukc!fennimore!demon!reriksson From: reriksson@demon.co.uk (Raj Eriksson) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul14.213320.8621@demon.co.uk> Date: Fri, 14 Jul 1995 21:33:20 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk 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. This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- === Raj Eriksson === Dept of Electrical Engineering, Demon Internet Services UK "Measuring a record you own is listening, not piracy." From jhernandez@mindspring.com Sun Jul 16 20:40:20 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!jhernandez From: jhernandez@mindspring.com (Jen Hernández) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul16.204020.1862@mindspring.com> Date: Sun, 16 Jul 1995 20:40:20 GMT References: <1995Jul14.213320.8621@demon.co.uk> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul14.213320.8621@demon.co.uk>, reriksson@demon.co.uk (Raj Eriksson) 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! -- Jen Hernández *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0