From mvasiliev@mindspring.com Tue Aug 13 07:48:19 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!mvasiliev From: mvasiliev@mindspring.com (Min-jun Vasiliev) Newsgroups: comp.sys.m68k Subject: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug13.074819.9700@mindspring.com> Date: Tue, 13 Aug 1996 07:48:19 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 10 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. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Did Marcus take the decryption EPROM with him when he left the lab? -- Min-jun Vasiliev Tape trading list upon request. SASE required for international mail. From dkang@berkeley.edu Thu Aug 15 04:09:19 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!berkeley!dkang From: dkang@berkeley.edu (Dong-hyun Kang) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug15.040919.8886@berkeley.edu> Date: Thu, 15 Aug 1996 04:09:19 GMT References: <1996Aug13.074819.9700@mindspring.com> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Aug13.074819.9700@mindspring.com>, mvasiliev@mindspring.com (Min-jun Vasiliev) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. 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. -- Dong-hyun Kang | dkang@berkeley.edu PGP Key fingerprint: 4303 8F87 578A 0EF1 "Keep the channels open." From msokolov@kiae.su Sat Aug 17 05:29:19 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!kiae!msokolov From: msokolov@kiae.su (Mike Sokolov) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug17.052919.6447@kiae.su> Date: Sat, 17 Aug 1996 05:29:19 GMT References: <1996Aug13.074819.9700@mindspring.com> <1996Aug15.040919.8886@berkeley.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Aug15.040919.8886@berkeley.edu>, dkang@berkeley.edu (Dong-hyun Kang) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Mike Sokolov US Robotics Courier V.34 @ 33,600 bps "Extraordinary claims require extraordinary spectra." From snovak@unam.mx Sat Aug 17 22:41:19 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!snovak From: snovak@unam.mx (Sven Novak) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug17.224119.7924@unam.mx> Date: Sat, 17 Aug 1996 22:41:19 GMT References: <1996Aug13.074819.9700@mindspring.com> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 12 In article <1996Aug13.074819.9700@mindspring.com>, mvasiliev@mindspring.com (Min-jun Vasiliev) 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. Top-posters will be placed in my ~/.killfile without notice. -- === Sven Novak === Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA) "Do not worship the copy." From ahernandez@mindspring.com Mon Aug 19 16:12:19 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!mindspring!ahernandez From: ahernandez@mindspring.com (Andrei Hernández) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1996Aug19.161219.3672@mindspring.com> Date: Mon, 19 Aug 1996 16:12:19 GMT References: <1996Aug13.074819.9700@mindspring.com> <1996Aug15.040919.8886@berkeley.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1996Aug15.040919.8886@berkeley.edu>, dkang@berkeley.edu (Dong-hyun Kang) writes: > 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. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. PGP Public key available via finger or upon request. -- Andrei Hernández | ahernandez@mindspring.com PGP Key fingerprint: 212E 8DEB B957 B9DA "Keep the channels open."