From amoreno@u-tokyo.ac.jp Fri Nov 24 05:08:36 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!u-tokyo!amoreno From: amoreno@u-tokyo.ac.jp (Anton Moreno) Newsgroups: comp.sys.m68k Subject: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov24.050836.6980@u-tokyo.ac.jp> Date: Fri, 24 Nov 1995 05:08:36 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. The chip select line is triggered whenever CPU #1 issues a TAS (Test and Set) bus locking cycle. This indicates socket U14 held a cryptographic S-box lookup table for decrypting the Stardust keystream. Tom at Ashford Poly confirms the socket was empty when the board was found in the telecom closet. -- Anton Moreno *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From sschneider@ox.ac.uk Sun Nov 26 08:19:36 1995 Path: ashpoly!cascade!brgate!saturno!ox!sschneider From: sschneider@ox.ac.uk (Sun-mi Schneider) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov26.081936.4200@ox.ac.uk> Date: Sun, 26 Nov 1995 08:19:36 GMT References: <1995Nov24.050836.6980@u-tokyo.ac.jp> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Nov24.050836.6980@u-tokyo.ac.jp>, amoreno@u-tokyo.ac.jp (Anton Moreno) writes: > Further progress on reverse-engineering the empty socket U14 on the TWIN-68 Rev C coprocessor board. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Sun-mi Schneider Tape trading list upon request. SASE required for international mail. From dkim@uu.net Sun Nov 26 16:57:36 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!uu!dkim From: dkim@uu.net (Dong-hyun Kim) Newsgroups: comp.sys.m68k Subject: Re: Data: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov26.165736.5953@uu.net> Date: Sun, 26 Nov 1995 16:57:36 GMT References: <1995Nov24.050836.6980@u-tokyo.ac.jp> <1995Nov26.081936.4200@ox.ac.uk> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Nov26.081936.4200@ox.ac.uk>, sschneider@ox.ac.uk (Sun-mi Schneider) 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 Kim Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA. ------------------------------------------------------------