From tvasiliev@unam.mx Tue Apr 12 21:25:21 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!tvasiliev From: tvasiliev@unam.mx (Tomas Vasiliev) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Apr12.212521.9481@unam.mx> Date: Tue, 12 Apr 1994 21:25:21 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 11 Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. Does anyone have a 27C256 EPROM marked 'MH-U14' or 'ORION-CRYPTO'? -- Tomas Vasiliev *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From tnakamura@cmu.edu Wed Apr 13 00:02:21 1994 Path: ashpoly!cascade!transat!ukc!fennimore!cmu!tnakamura From: tnakamura@cmu.edu (Thiago Nakamura) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Apr13.000221.1653@cmu.edu> Date: Wed, 13 Apr 1994 00:02:21 GMT References: <1994Apr12.212521.9481@unam.mx> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Apr12.212521.9481@unam.mx>, tvasiliev@unam.mx (Tomas Vasiliev) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Thiago Nakamura Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------ From epopov@demon.co.uk Wed Apr 13 19:07:21 1994 Path: ashpoly!cascade!mxgate!coyoacan!demon!epopov From: epopov@demon.co.uk (Elaine Popov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Apr13.190721.3679@demon.co.uk> Date: Wed, 13 Apr 1994 19:07:21 GMT References: <1994Apr12.212521.9481@unam.mx> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Apr12.212521.9481@unam.mx>, tvasiliev@unam.mx (Tomas Vasiliev) writes: > Tracing the address decoder lines on the motherboard reveals what was supposed to be in socket U14. > Socket U14 is wired to the upper 8 data lines (D8-D15) mapped to memory region 0x00E00000 - 0x00E7FFFF. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- === Elaine Popov === Dept of Electrical Engineering, Demon Internet Services UK "We don't sign stars. We build them." From drodriguez@netcom.com Thu Apr 14 02:36:21 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!netcom!drodriguez From: drodriguez@netcom.com (Dong-hyun Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Apr14.023621.3888@netcom.com> Date: Thu, 14 Apr 1994 02:36:21 GMT References: <1994Apr12.212521.9481@unam.mx> <1994Apr13.000221.1653@cmu.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Apr13.000221.1653@cmu.edu>, tnakamura@cmu.edu (Thiago Nakamura) 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! -- Dong-hyun Rodríguez Zyxel U-1496E @ 28,800 bps "A soul is not exclusive to biology."