From jsato@demon.co.uk Wed Mar 15 08:34:20 1995 Path: ashpoly!cascade!mxgate!coyoacan!demon!jsato From: jsato@demon.co.uk (Ji-woo Sato) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar15.083420.7575@demon.co.uk> Date: Wed, 15 Mar 1995 08:34:20 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk 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? -- === Ji-woo Sato === Dept of Electrical Engineering, Demon Internet Services UK "Row 14. No joke." From bsantos@tum.de Wed Mar 15 19:49:20 1995 Path: ashpoly!cascade!brgate!saturno!tum!bsantos From: bsantos@tum.de (Brian Santos) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar15.194920.5481@tum.de> Date: Wed, 15 Mar 1995 19:49:20 GMT References: <1995Mar15.083420.7575@demon.co.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Mar15.083420.7575@demon.co.uk>, jsato@demon.co.uk (Ji-woo Sato) 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. -- Brian Santos Tape trading list upon request. SASE required for international mail. From amoreno@tum.de Thu Mar 16 03:59:20 1995 Path: ashpoly!cascade!brgate!saturno!tum!amoreno From: amoreno@tum.de (Astrid Moreno) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar16.035920.9705@tum.de> Date: Thu, 16 Mar 1995 03:59:20 GMT References: <1995Mar15.083420.7575@demon.co.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar15.083420.7575@demon.co.uk>, jsato@demon.co.uk (Ji-woo Sato) 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. -- Astrid Moreno *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From ewatanabe@clari.net Fri Mar 17 14:06:20 1995 Path: ashpoly!cascade!mxgate!coyoacan!clari!ewatanabe From: ewatanabe@clari.net (Élodie Watanabe) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar17.140620.8496@clari.net> Date: Fri, 17 Mar 1995 14:06:20 GMT References: <1995Mar15.083420.7575@demon.co.uk> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Mar15.083420.7575@demon.co.uk>, jsato@demon.co.uk (Ji-woo Sato) 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! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Élodie Watanabe "Measuring a record you own is listening, not piracy." NeXTstation Turbo Color / FreeBSD 2.1 From brodriguez@mindspring.com Sat Mar 18 18:29:20 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!brodriguez From: brodriguez@mindspring.com (Bill Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Disassembling socket U14 firmware on the TWIN-68 board Message-ID: <1995Mar18.182920.6515@mindspring.com> Date: Sat, 18 Mar 1995 18:29:20 GMT References: <1995Mar15.083420.7575@demon.co.uk> <1995Mar16.035920.9705@tum.de> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar16.035920.9705@tum.de>, amoreno@tum.de (Astrid Moreno) writes: > Using an S-box in a 27256 EPROM for single-cycle hardware substitution was standard military cipher practice in 1984. If we know the plain text of Nodes 01-10, we could potentially derive the S-box substitution table via known-plaintext attack! -- Bill Rodríguez SupraFAXModem 28.8 @ ISDN 64k bps "Marcus is not one man."