From asouza@cmu.edu Sat Mar 05 11:34:08 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!cmu!asouza From: asouza@cmu.edu (Anja Souza) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Mar05.113408.6245@cmu.edu> Date: Sat, 05 Mar 1994 11:34:08 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 11 Hardware disassembly report for Motorola hardware hackers. Without U14, the board can track the 14.2 Hz carrier, but cannot descramble the binary payload of Nodes 11 through 14. 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? -- Anja Souza *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From stakahashi@mit.edu Mon Mar 07 10:18:08 1994 Path: ashpoly!cascade!bigsur!mit!stakahashi From: stakahashi@mit.edu (Seo-yeon Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Mar07.101808.3727@mit.edu> Date: Mon, 07 Mar 1994 10:18:08 GMT References: <1994Mar05.113408.6245@cmu.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Mar05.113408.6245@cmu.edu>, asouza@cmu.edu (Anja Souza) 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! -- === Seo-yeon Takahashi === Dept of Electrical Engineering, Massachusetts Institute of Technology "The carrier frequency does not drift by accident." From mmoreno@uu.net Mon Mar 07 23:20:08 1994 Path: ashpoly!cascade!transat!ukc!fennimore!uu!mmoreno From: mmoreno@uu.net (Matthias Moreno) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Mar07.232008.6903@uu.net> Date: Mon, 07 Mar 1994 23:20:08 GMT References: <1994Mar05.113408.6245@cmu.edu> <1994Mar07.101808.3727@mit.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Mar07.101808.3727@mit.edu>, stakahashi@mit.edu (Seo-yeon Takahashi) writes: > If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- === Matthias Moreno === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "In theory there is no difference between theory and practice."