From amacdonald@kiae.su Mon Oct 02 08:37:26 1995 Path: ashpoly!cascade!mxgate!coyoacan!kiae!amacdonald From: amacdonald@kiae.su (Andrei MacDonald) Newsgroups: comp.sys.m68k Subject: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct02.083726.7484@kiae.su> Date: Mon, 02 Oct 1995 08:37:26 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. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. 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 MacDonald Tape trading list upon request. SASE required for international mail. From lsuzuki@utexas.edu Tue Oct 03 02:18:26 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!utexas!lsuzuki From: lsuzuki@utexas.edu (Lisa Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct03.021826.3747@utexas.edu> Date: Tue, 03 Oct 1995 02:18:26 GMT References: <1995Oct02.083726.7484@kiae.su> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Oct02.083726.7484@kiae.su>, amacdonald@kiae.su (Andrei MacDonald) 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! -- Lisa Suzuki "Extraordinary claims require extraordinary spectra." Macintosh IIfx / Linux 1.2.13 From tdubois@cam.ac.uk Tue Oct 03 22:01:26 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!cam!tdubois From: tdubois@cam.ac.uk (Takeshi Dubois) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct03.220126.8221@cam.ac.uk> Date: Tue, 03 Oct 1995 22:01:26 GMT References: <1995Oct02.083726.7484@kiae.su> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Oct02.083726.7484@kiae.su>, amacdonald@kiae.su (Andrei MacDonald) 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! -- Takeshi Dubois "We don't sign stars. We build them." Acorn RiscPC 600 / NEXTSTEP 3.3 From mcampbell@mindspring.com Thu Oct 05 02:05:26 1995 Path: ashpoly!cascade!mxgate!coyoacan!mindspring!mcampbell From: mcampbell@mindspring.com (Mateo Campbell) Newsgroups: comp.sys.m68k Subject: Re: Observation: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Oct05.020526.2956@mindspring.com> Date: Thu, 05 Oct 1995 02:05:26 GMT References: <1995Oct02.083726.7484@kiae.su> <1995Oct03.021826.3747@utexas.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Oct03.021826.3747@utexas.edu>, lsuzuki@utexas.edu (Lisa Suzuki) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Mateo Campbell Tape trading list upon request. SASE required for international mail.