From vokonkwo@hanse.de Wed Nov 01 00:41:19 1995 Path: ashpoly!cascade!transat!ukc!fennimore!hanse!vokonkwo From: vokonkwo@hanse.de (Valeria Okonkwo) Newsgroups: comp.sys.m68k Subject: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov01.004119.4673@hanse.de> Date: Wed, 01 Nov 1995 00:41:19 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 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. 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? -- Valeria Okonkwo Opinions expressed are solely my own and not those of Hanse-Netzwerk Hamburg. ------------------------------------------------------------ From kwatanabe@stanford.edu Thu Nov 02 06:27:19 1995 Path: ashpoly!cascade!mxgate!coyoacan!stanford!kwatanabe From: kwatanabe@stanford.edu (Karen Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov02.062719.6063@stanford.edu> Date: Thu, 02 Nov 1995 06:27:19 GMT References: <1995Nov01.004119.4673@hanse.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Nov01.004119.4673@hanse.de>, vokonkwo@hanse.de (Valeria Okonkwo) writes: > 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. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Karen Watanabe -- Stanford University Computer Systems Lab "Hardware is temporary. The signal survives." From ggonzalez@ox.ac.uk Fri Nov 03 16:10:19 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!ggonzalez From: ggonzalez@ox.ac.uk (Graham González) Newsgroups: comp.sys.m68k Subject: Re: Question: Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Nov03.161019.7226@ox.ac.uk> Date: Fri, 03 Nov 1995 16:10:19 GMT References: <1995Nov01.004119.4673@hanse.de> <1995Nov02.062719.6063@stanford.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Nov02.062719.6063@stanford.edu>, kwatanabe@stanford.edu (Karen Watanabe) 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. -- Graham González "There are 14 nodes and only 10 countries. Count again." 486DX2/66 (Linux 1.2.13) / FreeBSD 2.1