From lfournier@mindspring.com Thu Oct 20 20:48:16 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!mindspring!lfournier From: lfournier@mindspring.com (Lisa Fournier) Newsgroups: comp.sys.m68k Subject: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Oct20.204816.2543@mindspring.com> Date: Thu, 20 Oct 1994 20:48:16 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Did Marcus take the decryption EPROM with him when he left the lab? -- Lisa Fournier "They will send a copy in my place." Sun 3/60 (SunOS 4.1.1) / System 7.5.1 From dmacdonald@uni-hamburg.de Sat Oct 22 04:46:16 1994 Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!dmacdonald From: dmacdonald@uni-hamburg.de (Dong-hyun MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Oct22.044616.7539@uni-hamburg.de> Date: Sat, 22 Oct 1994 04:46:16 GMT References: <1994Oct20.204816.2543@mindspring.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Oct20.204816.2543@mindspring.com>, lfournier@mindspring.com (Lisa Fournier) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Dong-hyun MacDonald -- Universität Hamburg Fachbereich Informatik "Do not worship the copy." From dsato@uu.net Sat Oct 22 13:36:16 1994 Path: ashpoly!cascade!bigsur!uu!dsato From: dsato@uu.net (Dong-hyun Sato) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Oct22.133616.6170@uu.net> Date: Sat, 22 Oct 1994 13:36:16 GMT References: <1994Oct20.204816.2543@mindspring.com> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Oct20.204816.2543@mindspring.com>, lfournier@mindspring.com (Lisa Fournier) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Dong-hyun Sato -- UUNET Technologies, Falls Church VA "Hold for relay." From lduarte@ox.ac.uk Mon Oct 24 17:11:16 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!ox!lduarte From: lduarte@ox.ac.uk (Lisa Duarte) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Oct24.171116.7695@ox.ac.uk> Date: Mon, 24 Oct 1994 17:11:16 GMT References: <1994Oct20.204816.2543@mindspring.com> <1994Oct22.044616.7539@uni-hamburg.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 8 In article <1994Oct22.044616.7539@uni-hamburg.de>, dmacdonald@uni-hamburg.de (Dong-hyun MacDonald) writes: > That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Lisa Duarte Tape trading list upon request. SASE required for international mail.