From hkuznetsov@clari.net Tue Mar 07 09:50:42 1995 Path: ashpoly!cascade!bigsur!clari!hkuznetsov From: hkuznetsov@clari.net (Hugo Kuznetsov) Newsgroups: comp.sys.m68k Subject: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar07.095042.8273@clari.net> Date: Tue, 07 Mar 1995 09:50:42 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 10 Hardware disassembly report for Motorola hardware hackers. 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. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- Hugo Kuznetsov Tape trading list upon request. SASE required for international mail. From ksilva@kiae.su Wed Mar 08 02:45:42 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kiae!ksilva From: ksilva@kiae.su (Karen Silva) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar08.024542.1964@kiae.su> Date: Wed, 08 Mar 1995 02:45:42 GMT References: <1995Mar07.095042.8273@clari.net> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Mar07.095042.8273@clari.net>, hkuznetsov@clari.net (Hugo Kuznetsov) writes: > Hardware disassembly report for Motorola hardware hackers. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Karen Silva -- Kurchatov Institute of Atomic Energy, Moscow "Row 14. No joke." From mhernandez@tum.de Wed Mar 08 18:15:42 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!mhernandez From: mhernandez@tum.de (Marta Hernández) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar08.181542.4730@tum.de> Date: Wed, 08 Mar 1995 18:15:42 GMT References: <1995Mar07.095042.8273@clari.net> <1995Mar08.024542.1964@kiae.su> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Mar08.024542.1964@kiae.su>, ksilva@kiae.su (Karen Silva) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. -- Marta Hernández -- Technische Universität München "In theory there is no difference between theory and practice." From mfischer@titech.ac.jp Fri Mar 10 12:31:42 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!mfischer From: mfischer@titech.ac.jp (Morag Fischer) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar10.123142.5636@titech.ac.jp> Date: Fri, 10 Mar 1995 12:31:42 GMT References: <1995Mar07.095042.8273@clari.net> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Mar07.095042.8273@clari.net>, hkuznetsov@clari.net (Hugo Kuznetsov) writes: > Hardware disassembly report for Motorola hardware hackers. 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. -- Morag Fischer *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0