From moliveira@demon.co.uk Mon Apr 24 21:38:04 1995 Path: ashpoly!cascade!bigsur!demon!moliveira From: moliveira@demon.co.uk (Mikhail Oliveira) Newsgroups: comp.sys.m68k Subject: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr24.213804.9667@demon.co.uk> Date: Mon, 24 Apr 1995 21:38:04 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. 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. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- Mikhail Oliveira -- Demon Internet Services UK "We don't sign stars. We build them." From nkuznetsov@rwth-aachen.de Tue Apr 25 03:50:04 1995 Path: ashpoly!cascade!bigsur!rwth-aachen!nkuznetsov From: nkuznetsov@rwth-aachen.de (Nadia Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr25.035004.9477@rwth-aachen.de> Date: Tue, 25 Apr 1995 03:50:04 GMT References: <1995Apr24.213804.9667@demon.co.uk> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Apr24.213804.9667@demon.co.uk>, moliveira@demon.co.uk (Mikhail Oliveira) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Nadia Kuznetsov Tape trading list upon request. SASE required for international mail. From jduarte@titech.ac.jp Thu Apr 27 03:56:04 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!jduarte From: jduarte@titech.ac.jp (Jens Duarte) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr27.035604.5212@titech.ac.jp> Date: Thu, 27 Apr 1995 03:56:04 GMT References: <1995Apr24.213804.9667@demon.co.uk> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Apr24.213804.9667@demon.co.uk>, moliveira@demon.co.uk (Mikhail Oliveira) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. 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. -- Jens Duarte Tape trading list upon request. SASE required for international mail. From thernandez@mindspring.com Fri Apr 28 10:55:04 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!mindspring!thernandez From: thernandez@mindspring.com (Tomas Hernández) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr28.105504.2289@mindspring.com> Date: Fri, 28 Apr 1995 10:55:04 GMT References: <1995Apr24.213804.9667@demon.co.uk> <1995Apr25.035004.9477@rwth-aachen.de> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Apr25.035004.9477@rwth-aachen.de>, nkuznetsov@rwth-aachen.de (Nadia Kuznetsov) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Tomas Hernández Opinions expressed are solely my own and not those of MindSpring Enterprises. ------------------------------------------------------------ From jnilsson@purdue.edu Sun Apr 30 12:01:04 1995 Path: ashpoly!cascade!brgate!saturno!purdue!jnilsson From: jnilsson@purdue.edu (Ji-woo Nilsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr30.120104.3747@purdue.edu> Date: Sun, 30 Apr 1995 12:01:04 GMT References: <1995Apr24.213804.9667@demon.co.uk> <1995Apr27.035604.5212@titech.ac.jp> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Apr27.035604.5212@titech.ac.jp>, jduarte@titech.ac.jp (Jens Duarte) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Ji-woo Nilsson | jnilsson@purdue.edu PGP Key fingerprint: 3225 449E F975 C4AF "Keep the channels open."