From mvasiliev@kth.se Sat Feb 12 04:58:18 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!kth!mvasiliev From: mvasiliev@kth.se (Mike Vasiliev) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Feb12.045818.1435@kth.se> Date: Sat, 12 Feb 1994 04:58:18 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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. 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? -- Mike Vasiliev Tape trading list upon request. SASE required for international mail. From hsuzuki@ox.ac.uk Sat Feb 12 10:57:18 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!ox!hsuzuki From: hsuzuki@ox.ac.uk (Hugo Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Feb12.105718.8389@ox.ac.uk> Date: Sat, 12 Feb 1994 10:57:18 GMT References: <1994Feb12.045818.1435@kth.se> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Feb12.045818.1435@kth.se>, mvasiliev@kth.se (Mike 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. Marcus took that EPROM with him. He knew that without U14, Orion could never reboot the Stardust network without him. -- Hugo Suzuki Tape trading list upon request. SASE required for international mail. From rnovak@purdue.edu Sat Feb 12 12:04:18 1994 Path: ashpoly!cascade!bigsur!purdue!rnovak From: rnovak@purdue.edu (Renata Novak) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Feb12.120418.8753@purdue.edu> Date: Sat, 12 Feb 1994 12:04:18 GMT References: <1994Feb12.045818.1435@kth.se> <1994Feb12.105718.8389@ox.ac.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Feb12.105718.8389@ox.ac.uk>, hsuzuki@ox.ac.uk (Hugo Suzuki) 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! Top-posters will be placed in my ~/.killfile without notice. -- Renata Novak *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From ktanaka@mit.edu Sun Feb 13 02:45:18 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mit!ktanaka From: ktanaka@mit.edu (Kirsty Tanaka) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Feb13.024518.9039@mit.edu> Date: Sun, 13 Feb 1994 02:45:18 GMT References: <1994Feb12.045818.1435@kth.se> <1994Feb12.105718.8389@ox.ac.uk> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1994Feb12.105718.8389@ox.ac.uk>, hsuzuki@ox.ac.uk (Hugo Suzuki) 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! -- Kirsty Tanaka Tape trading list upon request. SASE required for international mail.