From dgirard@illinois.edu Fri Nov 11 13:49:05 1994 Path: ashpoly!cascade!brgate!saturno!illinois!dgirard From: dgirard@illinois.edu (Diego Girard) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Nov11.134905.4511@illinois.edu> Date: Fri, 11 Nov 1994 13:49:05 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 11 Hardware disassembly report for Motorola hardware hackers. 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. -- Diego Girard SupraFAXModem 28.8 @ ISDN 64k bps "Marcus is not one man." From hchoi@uu.net Fri Nov 11 16:55:05 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!uu!hchoi From: hchoi@uu.net (Hugo Choi) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Nov11.165505.8149@uu.net> Date: Fri, 11 Nov 1994 16:55:05 GMT References: <1994Nov11.134905.4511@illinois.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Nov11.134905.4511@illinois.edu>, dgirard@illinois.edu (Diego Girard) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Hugo Choi *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From dpetrov@utexas.edu Sat Nov 12 12:10:05 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!dpetrov From: dpetrov@utexas.edu (Dmitri Petrov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Nov12.121005.9110@utexas.edu> Date: Sat, 12 Nov 1994 12:10:05 GMT References: <1994Nov11.134905.4511@illinois.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Nov11.134905.4511@illinois.edu>, dgirard@illinois.edu (Diego Girard) writes: > Hardware disassembly report for Motorola hardware hackers. > 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! -- Dmitri Petrov SupraFAXModem 28.8 @ 33,600 bps "A soul is not exclusive to biology." From bkang@stanford.edu Sat Nov 12 16:57:05 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!stanford!bkang From: bkang@stanford.edu (Bruno Kang) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Nov12.165705.5127@stanford.edu> Date: Sat, 12 Nov 1994 16:57:05 GMT References: <1994Nov11.134905.4511@illinois.edu> <1994Nov11.165505.8149@uu.net> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1994Nov11.165505.8149@uu.net>, hchoi@uu.net (Hugo Choi) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. That's why Line 08 says: 'WHEN EVERY NODE IS WHOLE, THE CHANNEL OPENS.' It requires all physical keys. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Bruno Kang "When every node is whole, the channel opens." Amiga 1200 (Blizzard 030/50) / AmigaOS 3.1 From eweber@uni-hamburg.de Sun Nov 13 16:09:05 1994 Path: ashpoly!cascade!bigsur!uni-hamburg!eweber From: eweber@uni-hamburg.de (Élodie Weber) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1994Nov13.160905.5997@uni-hamburg.de> Date: Sun, 13 Nov 1994 16:09:05 GMT References: <1994Nov11.134905.4511@illinois.edu> <1994Nov11.165505.8149@uu.net> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 12 In article <1994Nov11.165505.8149@uu.net>, hchoi@uu.net (Hugo Choi) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Élodie Weber *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0