From handersson@kiae.su Fri Apr 28 14:42:49 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!kiae!handersson From: handersson@kiae.su (Hana Andersson) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr28.144249.3168@kiae.su> Date: Fri, 28 Apr 1995 14:42:49 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 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. 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? -- Hana Andersson Tape trading list upon request. SASE required for international mail. From mreyes@rwth-aachen.de Sun Apr 30 16:07:49 1995 Path: ashpoly!cascade!transat!ukc!fennimore!rwth-aachen!mreyes From: mreyes@rwth-aachen.de (Mateo Reyes) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Apr30.160749.6506@rwth-aachen.de> Date: Sun, 30 Apr 1995 16:07:49 GMT References: <1995Apr28.144249.3168@kiae.su> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Apr28.144249.3168@kiae.su>, handersson@kiae.su (Hana Andersson) 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. -- Mateo Reyes US Robotics Courier V.34 @ 14,400 bps "Row 14. No joke." From dlarsson@utexas.edu Mon May 01 22:26:49 1995 Path: ashpoly!cascade!bigsur!utexas!dlarsson From: dlarsson@utexas.edu (Dmitri Larsson) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995May01.222649.1348@utexas.edu> Date: Mon, 01 May 1995 22:26:49 GMT References: <1995Apr28.144249.3168@kiae.su> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Apr28.144249.3168@kiae.su>, handersson@kiae.su (Hana Andersson) 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! If you are posting from AOL, please read RFC 1036 before posting again. -- Dmitri Larsson Tape trading list upon request. SASE required for international mail. From ilarsson@stanford.edu Tue May 02 10:30:49 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!stanford!ilarsson From: ilarsson@stanford.edu (Ines Larsson) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995May02.103049.5963@stanford.edu> Date: Tue, 02 May 1995 10:30:49 GMT References: <1995Apr28.144249.3168@kiae.su> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Apr28.144249.3168@kiae.su>, handersson@kiae.su (Hana Andersson) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- === Ines Larsson === Dept of Electrical Engineering, Stanford University Computer Systems Lab "Hold for relay." From sandersson@tum.de Thu May 04 08:50:49 1995 Path: ashpoly!cascade!brgate!saturno!tum!sandersson From: sandersson@tum.de (Steve Andersson) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995May04.085049.9213@tum.de> Date: Thu, 04 May 1995 08:50:49 GMT References: <1995Apr28.144249.3168@kiae.su> <1995May02.103049.5963@stanford.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May02.103049.5963@stanford.edu>, ilarsson@stanford.edu (Ines Larsson) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Steve Andersson | sandersson@tum.de PGP Key fingerprint: F56B BC57 1B9C D825 "Keep the channels open."