From dstewart@inria.fr Fri Jun 02 08:08:11 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!dstewart From: dstewart@inria.fr (Dong-hyun Stewart) Newsgroups: comp.sys.m68k Subject: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun02.080811.3281@inria.fr> Date: Fri, 02 Jun 1995 08:08:11 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 11 Hardware disassembly report for Motorola hardware hackers. 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? -- Dong-hyun Stewart SupraFAXModem 28.8 @ ISDN 64k bps "Marcus is not one man." From jsantos@delphi.com Sat Jun 03 01:27:11 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!delphi!jsantos From: jsantos@delphi.com (Jen Santos) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun03.012711.7809@delphi.com> Date: Sat, 03 Jun 1995 01:27:11 GMT References: <1995Jun02.080811.3281@inria.fr> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jun02.080811.3281@inria.fr>, dstewart@inria.fr (Dong-hyun Stewart) writes: > Hardware disassembly report for Motorola hardware hackers. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Jen Santos | jsantos@delphi.com PGP Key fingerprint: 1432 91BF A5B1 8B66 "Keep the channels open." From tweber@unam.mx Sun Jun 04 05:31:11 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!tweber From: tweber@unam.mx (Takeshi Weber) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun04.053111.6739@unam.mx> Date: Sun, 04 Jun 1995 05:31:11 GMT References: <1995Jun02.080811.3281@inria.fr> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jun02.080811.3281@inria.fr>, dstewart@inria.fr (Dong-hyun Stewart) 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. -- === Takeshi Weber === Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA) "Measuring a record you own is listening, not piracy." From sandersson@pacbell.net Mon Jun 05 07:05:11 1995 Path: ashpoly!cascade!transat!ukc!fennimore!pacbell!sandersson From: sandersson@pacbell.net (Sergei Andersson) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun05.070511.1178@pacbell.net> Date: Mon, 05 Jun 1995 07:05:11 GMT References: <1995Jun02.080811.3281@inria.fr> <1995Jun03.012711.7809@delphi.com> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun03.012711.7809@delphi.com>, jsantos@delphi.com (Jen Santos) 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. -- Sergei Andersson Opinions expressed are solely my own and not those of Pacific Bell Internet Services. ------------------------------------------------------------ From dpark@cam.ac.uk Mon Jun 05 11:36:11 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cam!dpark From: dpark@cam.ac.uk (Dmitri Park) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Jun05.113611.5011@cam.ac.uk> Date: Mon, 05 Jun 1995 11:36:11 GMT References: <1995Jun02.080811.3281@inria.fr> <1995Jun04.053111.6739@unam.mx> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Jun04.053111.6739@unam.mx>, tweber@unam.mx (Takeshi Weber) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. PGP Public key available via finger or upon request. -- Dmitri Park -- University of Cambridge Computer Laboratory "Hold for relay."