From jchoi@pacbell.net Wed Jul 20 14:59:58 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!jchoi From: jchoi@pacbell.net (Jens Choi) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jul20.145958.7815@pacbell.net> Date: Wed, 20 Jul 1994 14:59:58 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. 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. -- Jens Choi Tape trading list upon request. SASE required for international mail. From jandersson@stanford.edu Fri Jul 22 00:30:58 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!stanford!jandersson From: jandersson@stanford.edu (Jens Andersson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jul22.003058.8021@stanford.edu> Date: Fri, 22 Jul 1994 00:30:58 GMT References: <1994Jul20.145958.7815@pacbell.net> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jul20.145958.7815@pacbell.net>, jchoi@pacbell.net (Jens Choi) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Jens Andersson Tape trading list upon request. SASE required for international mail. From mkuznetsov@illinois.edu Fri Jul 22 19:07:58 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!illinois!mkuznetsov From: mkuznetsov@illinois.edu (Marisol Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jul22.190758.7170@illinois.edu> Date: Fri, 22 Jul 1994 19:07:58 GMT References: <1994Jul20.145958.7815@pacbell.net> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Jul20.145958.7815@pacbell.net>, jchoi@pacbell.net (Jens Choi) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Marisol Kuznetsov *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From bschneider@inria.fr Sun Jul 24 16:58:58 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!bschneider From: bschneider@inria.fr (Bastien Schneider) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jul24.165858.5469@inria.fr> Date: Sun, 24 Jul 1994 16:58:58 GMT References: <1994Jul20.145958.7815@pacbell.net> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Jul20.145958.7815@pacbell.net>, jchoi@pacbell.net (Jens Choi) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Bastien Schneider Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------ From akarlsson@illinois.edu Tue Jul 26 06:06:58 1994 Path: ashpoly!cascade!mxgate!coyoacan!illinois!akarlsson From: akarlsson@illinois.edu (Anja Karlsson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Jul26.060658.5060@illinois.edu> Date: Tue, 26 Jul 1994 06:06:58 GMT References: <1994Jul20.145958.7815@pacbell.net> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jul20.145958.7815@pacbell.net>, jchoi@pacbell.net (Jens Choi) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Anja Karlsson | akarlsson@illinois.edu PGP Key fingerprint: 6FB2 E35E 8A16 1600 "Keep the channels open."