From lmartinez@utexas.edu Thu Jun 15 21:47:12 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!lmartinez From: lmartinez@utexas.edu (Lucia Martínez) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun15.214712.6224@utexas.edu> Date: Thu, 15 Jun 1995 21:47:12 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. 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? -- Lucia Martínez -- University of Texas at Austin "Measuring a record you own is listening, not piracy." From alindqvist@demon.co.uk Fri Jun 16 18:00:12 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!demon!alindqvist From: alindqvist@demon.co.uk (Andrei Lindqvist) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun16.180012.5755@demon.co.uk> Date: Fri, 16 Jun 1995 18:00:12 GMT References: <1995Jun15.214712.6224@utexas.edu> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jun15.214712.6224@utexas.edu>, lmartinez@utexas.edu (Lucia Martínez) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. > Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Andrei Lindqvist -- Demon Internet Services UK "Marcus is not one man." From aoliveira@panix.com Sat Jun 17 12:17:12 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!panix!aoliveira From: aoliveira@panix.com (Anton Oliveira) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun17.121712.2727@panix.com> Date: Sat, 17 Jun 1995 12:17:12 GMT References: <1995Jun15.214712.6224@utexas.edu> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jun15.214712.6224@utexas.edu>, lmartinez@utexas.edu (Lucia Martínez) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Anton Oliveira | aoliveira@panix.com PGP Key fingerprint: 2F2D A752 2540 9321 "Keep the channels open." From dmuller@cern.ch Sun Jun 18 05:11:12 1995 Path: ashpoly!cascade!brgate!saturno!cern!dmuller From: dmuller@cern.ch (Dmitri Müller) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun18.051112.6047@cern.ch> Date: Sun, 18 Jun 1995 05:11:12 GMT References: <1995Jun15.214712.6224@utexas.edu> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jun15.214712.6224@utexas.edu>, lmartinez@utexas.edu (Lucia Martínez) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Dmitri Müller Tape trading list upon request. SASE required for international mail. From afischer@inria.fr Mon Jun 19 20:15:12 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!inria!afischer From: afischer@inria.fr (Andrei Fischer) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun19.201512.2610@inria.fr> Date: Mon, 19 Jun 1995 20:15:12 GMT References: <1995Jun15.214712.6224@utexas.edu> <1995Jun17.121712.2727@panix.com> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jun17.121712.2727@panix.com>, aoliveira@panix.com (Anton Oliveira) writes: > That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! PGP Public key available via finger or upon request. -- Andrei Fischer -- INRIA Rocquencourt "They will send a copy in my place."