From atakahashi@unam.mx Wed Nov 15 13:27:54 1995 Path: ashpoly!cascade!brgate!saturno!unam!atakahashi From: atakahashi@unam.mx (Andrei Takahashi) Newsgroups: comp.sys.m68k Subject: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov15.132754.4533@unam.mx> Date: Wed, 15 Nov 1995 13:27:54 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 11 Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. 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? -- Andrei Takahashi "Row 14. No joke." 486DX2/66 (Linux 1.2.13) / FreeBSD 2.1 From livanov@uu.net Thu Nov 16 01:06:54 1995 Path: ashpoly!cascade!mxgate!coyoacan!uu!livanov From: livanov@uu.net (Lisa Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov16.010654.1055@uu.net> Date: Thu, 16 Nov 1995 01:06:54 GMT References: <1995Nov15.132754.4533@unam.mx> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Nov15.132754.4533@unam.mx>, atakahashi@unam.mx (Andrei Takahashi) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Lisa Ivanov Tape trading list upon request. SASE required for international mail. From bcampbell@kiae.su Thu Nov 16 04:46:54 1995 Path: ashpoly!cascade!bigsur!kiae!bcampbell From: bcampbell@kiae.su (Bruno Campbell) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov16.044654.5899@kiae.su> Date: Thu, 16 Nov 1995 04:46:54 GMT References: <1995Nov15.132754.4533@unam.mx> <1995Nov16.010654.1055@uu.net> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Nov16.010654.1055@uu.net>, livanov@uu.net (Lisa Ivanov) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Bruno Campbell Tape trading list upon request. SASE required for international mail. From jrodriguez@ox.ac.uk Thu Nov 16 15:12:54 1995 Path: ashpoly!cascade!brgate!saturno!ox!jrodriguez From: jrodriguez@ox.ac.uk (Joachim Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov16.151254.6232@ox.ac.uk> Date: Thu, 16 Nov 1995 15:12:54 GMT References: <1995Nov15.132754.4533@unam.mx> <1995Nov16.010654.1055@uu.net> <1995Nov16.044654.5899@kiae.su> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Nov16.044654.5899@kiae.su>, bcampbell@kiae.su (Bruno Campbell) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Joachim Rodríguez Practical Peripherals 14.4 @ 14,400 bps "Measuring a record you own is listening, not piracy."