From rlaurent@uni-hamburg.de Sun Jul 02 01:00:13 1995 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!rlaurent From: rlaurent@uni-hamburg.de (Rodrigo Laurent) Newsgroups: comp.sys.m68k Subject: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul02.010013.4297@uni-hamburg.de> Date: Sun, 02 Jul 1995 01:00:13 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 11 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. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Did Marcus take the decryption EPROM with him when he left the lab? -- Rodrigo Laurent *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From nhernandez@pipeline.com Mon Jul 03 09:54:13 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!pipeline!nhernandez From: nhernandez@pipeline.com (Natalia Hernández) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul03.095413.1829@pipeline.com> Date: Mon, 03 Jul 1995 09:54:13 GMT References: <1995Jul02.010013.4297@uni-hamburg.de> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Jul02.010013.4297@uni-hamburg.de>, rlaurent@uni-hamburg.de (Rodrigo Laurent) 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. -- Natalia Hernández "Tape doesn't lie at 02:14. Ears do." NeXTstation Turbo Color / SunOS 4.1.4 From bgirard@utexas.edu Mon Jul 03 15:55:13 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!bgirard From: bgirard@utexas.edu (Brian Girard) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul03.155513.9724@utexas.edu> Date: Mon, 03 Jul 1995 15:55:13 GMT References: <1995Jul02.010013.4297@uni-hamburg.de> <1995Jul03.095413.1829@pipeline.com> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul03.095413.1829@pipeline.com>, nhernandez@pipeline.com (Natalia Hernández) 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. -- Brian Girard *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From blarsson@inria.fr Wed Jul 05 19:47:13 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!blarsson From: blarsson@inria.fr (Bruno Larsson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul05.194713.2857@inria.fr> Date: Wed, 05 Jul 1995 19:47:13 GMT References: <1995Jul02.010013.4297@uni-hamburg.de> <1995Jul03.095413.1829@pipeline.com> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Jul03.095413.1829@pipeline.com>, nhernandez@pipeline.com (Natalia Hernández) writes: > Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Bruno Larsson -- INRIA Rocquencourt "Marcus is not one man." From orodriguez@kiae.su Fri Jul 07 00:36:13 1995 Path: ashpoly!cascade!mxgate!coyoacan!kiae!orodriguez From: orodriguez@kiae.su (Olga Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jul07.003613.1068@kiae.su> Date: Fri, 07 Jul 1995 00:36:13 GMT References: <1995Jul02.010013.4297@uni-hamburg.de> <1995Jul03.095413.1829@pipeline.com> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul03.095413.1829@pipeline.com>, nhernandez@pipeline.com (Natalia Hernández) 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. -- Olga Rodríguez Opinions expressed are solely my own and not those of Kurchatov Institute of Atomic Energy, Moscow. ------------------------------------------------------------