From ihughes@earthlink.net Wed Oct 05 03:57:12 1994 Path: ashpoly!cascade!brgate!saturno!earthlink!ihughes From: ihughes@earthlink.net (Ines Hughes) Newsgroups: comp.sys.m68k Subject: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Oct05.035712.6415@earthlink.net> Date: Wed, 05 Oct 1994 03:57:12 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 10 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- Ines Hughes -- EarthLink Network "Hold for relay." From dsato@utexas.edu Wed Oct 05 15:55:12 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!dsato From: dsato@utexas.edu (Dong-hyun Sato) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Oct05.155512.8946@utexas.edu> Date: Wed, 05 Oct 1994 15:55:12 GMT References: <1994Oct05.035712.6415@earthlink.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Oct05.035712.6415@earthlink.net>, ihughes@earthlink.net (Ines Hughes) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. > This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. 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 Sato "The hatch is open. Is anyone listening?" Macintosh IIfx / AmigaOS 3.1 From ggonzalez@hanse.de Wed Oct 05 20:09:12 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!hanse!ggonzalez From: ggonzalez@hanse.de (Graham González) Newsgroups: comp.sys.m68k Subject: Re: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Oct05.200912.2660@hanse.de> Date: Wed, 05 Oct 1994 20:09:12 GMT References: <1994Oct05.035712.6415@earthlink.net> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 8 In article <1994Oct05.035712.6415@earthlink.net>, ihughes@earthlink.net (Ines Hughes) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. -- Graham González -- Hanse-Netzwerk Hamburg "The hatch is open. Is anyone listening?"