December 2003 - cypherpunks-legacy

InfoWarriors - Alpha
by TruthMonger 17 Dec '03

17 Dec '03

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Re: trusting untrusted platforms
by Ryan Lackey 17 Dec '03

17 Dec '03

> > Alexandre Maret <amaret(a)infomaniak.ch> says: > > [how to do trusted computation on untrusted platforms] I'm working on a paper, it's one of the technical hurdles on the way to my Eternity DDS eternity service implementation. > rdl, less frustrated with changing from vtwm/athena to KDE, says: > I so far have been approaching it as "Type I (active)" and "Type II (passive)" > attackers. In the first case, people lie about the results, in the second, > they give you the correct results, but snoop on the data. (For some reason > the terminology is kind of lame, but it helps to have some) > > There are a bunch of mathematical/cryptographic ways of hiding data from > those doing computations on it, at least for a subset of computations. I'm > trying to put together a generalized computing model for this which would be > turing complete if it can be, although it is not clear it can be. Some > operations practically will be a lot more expensive in this model than in > the conventional environment, and perhaps to a computation which would require > 10 units of conventional secret CPU time, you will need 9 units of secret > CPU to encode/decode the data and 41 units of public CPU time. You also need > to guard against covert channels, such as the total amount of public CPU time > you are requesting as a clue to what you're doing with it. I am confident > type II security can be realized with at least a minor amount of performance > improvement over purely secret use, assuming public time is free. > > Type I security is a lot more difficult to realize in true theoretical > sense, but is easier in a practical sense. A simple solution is to do the > same computation on a bunch of different remote machines, and as long as > they don't collude, you can just make sure they all answered the same, modulo > rounding errors and stuff. This isn't the kind of provable security you > can conceivably get against type II attackers, but it doesn't have any innate > performance hit. > > It's possible there are systems which are byzantine fault tolerant to > the former kind of attack -- instinctively, you can just split up the > computation in small enough pieces that you don't care if it is compromised. > > I'm interested in finding a provably secure computation-checksum technique. > I think there are most likely reductions for a lot of problems to things > which can be verified, and again, my goal is to have a Turing-complete > model of computation with this property. > > > [can cryptography be helpful?] > > It's as much a theory of computation problem as anything else, once you > have some functions through which you can carry some operations. > > Most of the stuff I've done so far focuses on the graph coloring problem. > I'm probably going to finish a quick version which can only deal with > a subset of problems, then work on a general model. > > [paper availability issues] > Yes, it will be publically available. It will be available when it's closer > to done; I will send something to cypherpunks about it, and I'll put it > up on the web somewhere. If it doesn't suck, and I can convince someone > at LCS-CIS of this/to be a co-author/etc., I might try to get it published. Anyone know anything very relevant to this? I've mostly just started on the research (my current exciting project has been Linux Fibre Channel and making a bloody fast, yet maybe secure, yet small cipher for an on board processor), and pointers would be useful. It isn't as hard a problem as I first thought, though. This seems like the kind of thing everyone's favorite judge-threatening tree-hugger-nose-mac-10-inserting gun-hoarding old-man-on-the-mountain would have done N years ago :) [flames, fan. gasoline. rdx...] so I'd rather not reinvent the wheel more than once or twice. Ryan (getting dangerously close to having a working Eternity DDS demo, and wondering if FC98 will be on mbone, particularly the solar eclipse, since even if he had the money to go, it's in the middle of next semester, and disappearing for a week would kind of be difficult, although not at all impossible of someone wants to pay for me to go...ahh, but there's always next year) -- Ryan Lackey rdl(a)mit.edu http://mit.edu/rdl/

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Dental/Optical Plan 2-3 Dollars a Week
by maicagii34＠msn.com 17 Dec '03

17 Dec '03

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evolRe: What cypherpunks used to be
by wabe 17 Dec '03

17 Dec '03

ANONYMOUS said: > evolve or die Evolution requires death, by definition. _______________________________________ -wabe

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No Subject
by jjn43 17 Dec '03

17 Dec '03

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mini-review: The Electronic Privacy Papers
by David HM Spector 17 Dec '03

17 Dec '03

This has got to be the "Book of the Year"...If you only read one book before the end of the year, or even one book ALL of next year, this is the book you MUST read: The Electronic Privacy Papers by Bruce Schneier and David Banisar Wiley Computer Publishing/John Wiley & Sons, Inc. ISBN: 0-471-12297-1 I just got it this morning, and cruised though the first chapters (I'm a fast reader...) and its positively explosive. The book consists of information gleaned from public sources and pried out of the Government via the Freedom of Information Act (FOIA) and logically takes the reader through a chronological history of government surveillance and public reactions to it. Schneier and Banisar examine the arguments for and against state surveillance and how these policies are formulated and how (from my reading so far) they are often implemented with little or no public discussion or input by agencies that seem to deeply distrust and dislike the lawmaking process and constitutional protections that are supposed to protect Americans from overzealous agents and Government abuse. Positively riveting.... For you Amazon.com junkies, here's the URL: http://www.amazon.com/exec/obidos/ats-query/9615-8912043-502933 ------------------------------------------------------------------------------- David HM Spector spector(a)zeitgeist.com Network Design & Infrastructure Security

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17 Dec '03

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No Subject
by nobody＠REPLAY.COM 17 Dec '03

17 Dec '03

The DEA announced friday that doctors in Oregon that participate in doctor assisted suicides will have their licence to prescribe drugs revoked. Since when did the DEA gestapo obtain the power to regulate physician's rights to prescribe the drugs their patients need? But more important is the realization that the thugs in DC now consider our votes null and void, the _people_ of Oregon voted to allow assisted suicide, TWICE, I thought this was a government _of_ the people? In Arizona, the people voted to allow doctor prescribed marijuana for those that the doctors thought it would help relieve their pain, the governor of that state the morning after the vote declared the people of Arizona were stupid and he would block implementation of the law, what the fuck are these hicks voting for don't they read the pabulum we spoon feed them day after day about the dangers of drugs? The Kent Crispins of the world wake up, voting is a waste of time, the bastards only allow us to vote for Moe, Curly, or Larry, all of the same union of thugs, some assigned to the Republican party, some assigned to the Democratic party, soon even that fig leaf of democracy will be discarded and the maximum leader will tell us it is necessary for national security reasons to suspend voting on our leaders. Lock and Load? No I dont think so, it is pointless, go out get drunk, screw anybody that will consent, have a good time, the chains will soon clamp on your neck. Amerika love it or leave it.

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technical issues of the list
by Jenaer Mixmaster Anonserver 17 Dec '03

17 Dec '03

-----BEGIN PGP SIGNED MESSAGE----- Issues: 1. Robustness. Usenet wins. 2. Efficiency. Usenet loses, but perhaps some kind of hack could be implemented combining mail and news delivery for greater efficiency without losing robustness? I'm not familiar with NNTP. 3. Access control. Usenet is too easy to get in to. We need to discourage clueless newbies from bothering us. This too could be hacked, e.g. set up a PGP cancel bot which only allows PGP signed posts. (This has many other convenient benefits such as encouraging nyms, and preventing spam.) Hm.. But people might worry that sigs could increase their legal exposure, even if they use (less than perfectly strong) nyms. So a good variation is to generate the canonical key pair and share the secret key around. Hell, post the secret key once a week in the FAQ... The cancel bot should allow sigs by either that key or any arbitrary key. Whoops! Such a cancel-bot undermines our goal of robustness.. HMMMmm. Okay the best solution to signal/noise management is (as always) filtering at the reader's desk. I don't read William H. Geiger III or Paul Bradley posts (usually), I don't read anything Subject: "Make Money Fast", from "Graham-John Buellers" or containing "Timmy" in the first sentence, and if we switch to Usenet, I won't read articles posted by unknowns without PGP sigs. There. :-) Regards, Zooko P.S. I am not a crook. Nor am I the anonymous who is so earnestly pleading for some sanity-checking around here, although I tend to agree with some of his points. P.P.S. Hi, Joichi Ito! Nice to see some articles from the Japanese chapter of The International Committee to Put The Bastards Up Against A Wall--- whoops- I mean, the Japanese chapter of the Peace-Loving, Code-Writing, Money-Making Cypherpunks. -----BEGIN PGP SIGNATURE----- Version: 2.6.3ia Charset: noconv Comment: http://www.c2.net/~bryce -- 'BAP' Easy-PGP v1.01 iQCVAwUBNG3T6hiDTlaqCaKdAQGTBwP+MFtiUEyD0zMCmhTUXA6vz4Ije/2qvPEP ckhFUlw4qLDg0cW0uXsS6Dl4HKhIV9Iu8DtC8BA7C692vC6E6EH5xQIQW6BmajOp gxhECxeCT2zrtGRKwDV5GMEtLsJ5Splp7qxlGJW4o1/16rhGVpxWzqESgC8PhDaT uAyb49at0pM= =HMRX -----END PGP SIGNATURE-----

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Re: The Policeman Inside
by nobody＠REPLAY.COM 17 Dec '03

17 Dec '03

-----BEGIN PGP SIGNED MESSAGE----- Tim May says: > Of course, an alternative is to say "Fuck you" to those who want us to shut > up, to deploy more unbreakable crypto, to encourage more armed militias to > spring up, to destabilize the regimes in Hong Kong, Japan, and India, and > to "Just Say No" to backdoors in PGP and other crypto products. Bring on > crypto anarchy. Sounds like a good plan to me! What do people think this nym is for? Only nyms can trade with impunity in the tax free cypherspace. Amad3us -----BEGIN PGP SIGNATURE----- Version: 2.6.3i iQCVAwUBNG8x7PKMuKFNFivhAQEKBgP9EajcgwZUJjxsZQtUmXERBbX1bwBQFypG n/piLEJdGEDDyquJ9Co14Aa6VbYkbfuzWoosnkutbyjZDRJdHM39DxzvcPhiKrIl 6JtY/regsDdwgeZHD4qIBs9TPlqbdWB2mieCB+HX8yrM5HOlrTq9xqF0de6lhfTi 3Q3NhhyClPc= =dGoV -----END PGP SIGNATURE-----

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