December 2003 - cypherpunks-legacy

Online Spending with Smart Cards and E.Cash to To US$3.5bn by year 2000
by Robert Hettinga 17 Dec '03

17 Dec '03

--- begin forwarded text Date: Fri, 24 Jan 97 00:04:40 +0100 To: dcsb(a)ai.mit.edu Subject: Online Spending with Smart Cards and E.Cash to To US$3.5bn by year 2000 Cc: nelson@media.mit.edu.geer@OpenMarket.com From: a9050756(a)unet.univie.ac.at (Mike Alexander) Sender: bounce-dcsb(a)ai.mit.edu Precedence: bulk Reply-To: a9050756(a)unet.univie.ac.at (Mike Alexander) >>[some Fed reserve guy's] argument for stored value cards is that the >>business costs of handling cash are so substantial that there is room >>for merchants to discount purchases when made by a means that does >>not require that handling cost. > >Does anyone know of a source for information on the overhead of >accepting various forms of payment? I assume the cost of cash is >smaller than credit cards for purchases under, say, $500. Any >estimates on smart cards? On pure digital cash (delivered via a >browser)? > >I'm particularly interested in micropayments, but the larger question >is interesting as well. I've worked on this topic extensively in the past months (writing a doctoral thesis on efficiency and risk in the payment system). I can assure you this: cash in is still and will remain one of the most efficient payment instruments. This holds looking at it from a private as well as social cost perspective with sufficient empirical support. Best Regards, Michael Alexander Doctoral Student at the University of Vienna -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.3i mQCNAzIhxYwAAAEEALtfkL/X6GuZpEECWnmkmbqqtGwNalb94Om82VUiBE8iU1OX 2e5WXQGsq1oManSqVQn3TpVo7VE9pMJr5vITAmkEA6szGRt5zbK5u/dIqhLnJnRE sVpiY61Xw6RvQKoXX7LSqOYSCqvIiY8GJ5gRpiKQNPZVuJRqbLipmU0fPqylAAUR tDFNaWNoYWVsIEYuIEFsZXhhbmRlciA8YTkwNTA3NTZAdW5ldC51bml2aWUuYWMu YXQ+iQCVAwUQMiHFjbipmU0fPqylAQGy4QP+LjB6lZXVYFZDpoVB7j8AGvkghSsr XicZapXPmsFX6xpt+S29EF4DGoDJIDq6VLJMZ2rQ1gFfEvvWzL7ekZ3orhLSpJoO WWRZF1MNZVWBNhzxBcdK2T6yrx4cBwQX7t299Ho0y1Go69VE9e3LN8YInIXoQYp5 bc4M0u16GqmV5eI= =5l49 -----END PGP PUBLIC KEY BLOCK----- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ To unsubscribe from the dcsb list, send a letter to: Majordomo(a)ai.mit.edu In the body of the message, write: unsubscribe dcsb Or, to subscribe, write: subscribe dcsb If you have questions, write to me at Owner-DCSB(a)ai.mit.edu --- end forwarded text ----------------- Robert Hettinga (rah(a)shipwright.com) Philodox e$, 44 Farquhar Street, Boston, MA 02131 USA "The cost of anything is the foregone alternative" -- Walter Johnson The e$ Home Page: http://www.shipwright.com/rah/ FC97: Anguilla, anyone? http://www.ai/fc97/ "If *you* don't go to FC97, *I* don't go to FC97"

1 0

CPSR President Aki Namioka Interviewed on "Real Time" Monday
by ISP-TV Main Contact 17 Dec '03

17 Dec '03

*** ISP-TV Program Announcement: CPSR President Aki Namioka Interviewed on "Real Time" *** *** Monday, Jan. 27 *** *** 9 PM ET / 6 PM PT *** Aki Namioka is President of the Computer Professionals for Social Responsibility (CPSR), a non-profit, public-interest group which advocates for civil rights with respect to electronic information. Netizens may remember Namioka's speech against the CDA at Seattle's "Internet Day of Protest" Rally. We'll ask Ms. Namioka about the history of the CPSR, and current issues CPSR follows in cyber rights, civil liberties, and technology education. She will be interviewed remotely over CU-SeeMe from the Speakeasy Cafe in Seattle, Washington (http://www.speakeasy.org/) Call-in questions will be taken during the show at (301) 847-6571. **** This video interview can be viewed on the ISP-TV main CU-SeeMe reflector at IP 205.197.248.54, or other ISP-TV affiliate reflectors listed at http://www.digex.net/isptv/members.html. See URL http://www.digex.net/isptv for more information about the ISP-TV Network To get email about future programming on ISP-TV, email the word "subscribe" to isptv-prog-request(a)isptv.digex.net. To obtain Enhanced CU-SeeMe software, go to: http://goliath.wpine.com/cudownload.htm

1 0

Re: Homo/bi/sexuals Most Destructive
by Attila T. Hun 17 Dec '03

17 Dec '03

aga's original message follows pgp----- -----BEGIN PGP SIGNED MESSAGE----- when AIDS was relatively obscure, I always dismissed AIDS as God's response to homosexuality (and other crimes against nature); i.e. -settlement by a just God. Unfortunately, some of these boy-girls could not keep it among themselves, and the closet queens brought it home. AIDS replicates asexually, knowing no boundaries. I would not wish the disease upon anyone, but if you play, you just might pay --as in "...reap what thy hath sown." One of the saddest commentaries on the entire problem is the man, a Pan-American flight steward, who was identified as carrier #1 by the Communicable Disease Center (CDC) in Atlanta; he died protesting he did not have the disease, nor was he a carrier. The flight steward was still sexually active until his impending death removed even his ability to passively participate. Unfortunately, he was not only in total denial as to the disease and its communicability, but he was also immensely profligate, having surrendered to total licentiousnous. To be strongly opposed to homosexuality has nothing to do with bigotry, political correctness, or aberrationist apologists; it is an exposition of the natural order among the species. and for those who deny God, read Darwin as to the relative rate of survival for deviant and/or abnormal species. == "eschewing my enmity is exemplary, even transcending my fraternity. --attila -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: latin1 Comment: Encrypted with 2.6.3i. Requires 2.6 or later. iQCVAwUBMukqX704kQrCC2kFAQGsDAQAxAMLt2JwaKqfz1Kw5IMf+EAQnQaoxpzR LtyTbCEvwhZRymfFwLZPj3P9Ph074ufOv0r/EmntvF2KmTETWM7k8ol5EySGjCbf 2mytxMy5VQiy5TBJWCvnxwdp/UjACtBM1sY8X16UyMLSE0tyzy4k3sF0TmPPkKdG FUQZzjXwYfQ= =TNlj -----END PGP SIGNATURE----- In <Pine.LNX.3.95.970116062523.30623C-100000(a)dhp.com>, on 01/16/97 at 06:28 AM, aga <aga(a)dhp.com> said: +> "Who Are The Patients? +> "In the United States, homosexual and bisexual males make up > +approximately 62 percent of the total patients. The other major group > +afflicted with AIDS are intravenous drug abusers -- both men and women +-- +> who constitute 20 percent of the total. . . ." +> +> "ADULTS AND ADOLESCENTS WITH AIDS, 1981-87 +> ================================== Males % Females % Both sexes +% > Homosexual/bisexual males 50,325 68 0 +50,325 62 > Intravenous (IV) drug abusers 12,529 17 3,622 52 +16,151 20 > Homosexual male an IV drug abusers 5,874 8 +5,874 7 > Hemophilia/coagulation disorder 751 1 22 0 +773 1 > Heterosexuals 1,516 2 2,073 30 +3,589 4 > Blood transfusion 1,297 2 747 11 +2,044 3 > Undetermined (1) 2,143 3 519 7 +2,662 3 > TOTAL 74,435 91 6,983 9 +81,418 100 > +========================================================================= +> "Note: Provisional data. Cases with more than one risk factor than +the > combinations listed are tabulated only in the category listed +first. > (1) Includes patients on whom risk information is incomplete, +patients > still under investigation, men reported only to have had +heterosexual > contact with a prostitute, and patients for whom no +specific risk was > identified; also includes one health care worker +who developed AIDS after > a documented needle-stick to blood. Source: +Centers for Disease Control." > +========================================================================= +> Cited in "The Universal Almanac 1990", Andrews and McMeel, 1989. > +=========================================================================

2 1

Re: Rejection policy of the Cypherpunks maiing list
by Cynthia H. Brown 17 Dec '03

17 Dec '03

On Fri, 24 Jan 1997, Toto wrote: > Igor Chudov @ home wrote: <snip> > > The explanation that Sandy Sandfort gave me mentioned that he rejected > > my message because it continued a thread where Sandy noticed instances > > of "flaming". Note that my message was free of any flames, including > > its quoted part. > > The standard of what constitutes a 'flame' seems to rest very much > upon whom a comment is directed at, or merely 'vaguely toward'. Beauty, flames and censorship are all in the eyes of the beholder. However, by providing both "raw" and "cooked" versions of the list, Sandy is allowing readers to choose for themselves whether or not they want someone else's filters applied to their mailbox. Personally, I choose to press the "Delete" key myself. <snip> > > Sandy also states rather plainly that crypto-relevance is not the > > criterion by which he moderates this list. > > This was more than obvious to anyone who cared to cast an objective > eye on the process, but their input was pooh-paah'd by the 'washed > masses'. Note that Sandy also stated that the post in question would not be sent to the 'washed masses'. > > I would like to hear your opinions as to whether such policies satisfy > > the current readership. > > Like all of the 'opinions' that were expressed prior to the censorship > of the list? I haven't seen any indication that these opinions were > given the slightest consideration. This is not the readership's list. > It is a private individual's list. Agreed, and said private individual can do as s/he sees fit. My only objection is that the moderated version has the same name as the original list (sounds like Rogers Cable's recent attempt at "Costs More Unless You Speak Up Now" channels). <snip> > In short, I don't see the moderation as being 'fair', and I don't > think it was ever meant to be. Again, fairness is in the eyes of the beholder. I don't object to the list being filtered, as long as everyone understands that this is happening. What will happen, I wonder, if at the end of the trial period the number of subscribers to the "raw" list outnumbers those who get the "cooked" list, or vice versa? Is that one of the criteria for determining the "success" of the experiment? Cynthia =============================================================== Cynthia H. Brown, P.Eng. Ottawa, Ontario, Canada E-mail: cynthb(a)sonetis.com Home Page: http://www.sonetis.com/~cynthb/ PGP Key: See Home Page Junk mail will be ignored in the order in which it is received. Klein bottle for rent; enquire within.

1 0

(fwd) Re: PGP implementation source code
by frogfarm＠yakko.cs.wmich.edu 17 Dec '03

17 Dec '03

[The discussion started with Pretty Safe Mail, the recent "PGP-compatible" Mac program, and whether or not it was safe. Source code is not available. Some authors noted that PSM was much slower than PGP, but so far lives up to its promise of user-friendliness. A Win95 version is in the works.] >From: Ian_Miller(a)bifroest.demon.co.uk (Ian Miller) Newsgroups: comp.security.pgp.discuss,comp.security.pgp.resources Subject: Re: PGP implementation source code (was "Imminent Death of PGP?" revisited) Date: Fri, 24 Jan 1997 19:55:46 +0000 Lines: 66 Message-ID: <AF0EC44296683DACD(a)bifroest.demon.co.uk> In article <5c2kap$1tu(a)topcat.uk.gdscorp.com>, Steve Gilham <steveg(a)uk.gdscorp.com> wrote: >PGP defines, but, IIRC does not inspect, a comment packet type. This >packet type could be added to a .pgp file and contain anything the >implementor wished (your plaintext secret key if it has been used in >this instance of the program, any IDEA key used, your passphrase, if >given) without any standard PGP implementation being aware of it The IDEA initialisation vector could also be used as a subliminal channel, it is only 8 bytes but it could (for example) leak a random 60 bits of one prime in your secret key with the remain 4 bits saying which set of 60 bits. Worse is the possibility that the program could put a back door into RSA key generation to make the modulus trivially factorisable by someone in the know. There are a number of mechanisms for this of varying detectability up to detectable only by reverse-engineering. Here are some of the (endless) possibilities in order of increasing sophistication:- 1) Make one of the primes a constant. Factorise by dividing by this number. Detectable by inspection of public keys alone. (For more details, see my article "There are no common factors in the Public keyring", 13th Jan in comp.security.pgp.announce.) 2) Select the first prime P at random but make second prime Q the smallest prime larger than PK where K is a constant. Factorise by searching from root(N/K). Probably detectable by suitable inspection of several secret keys generated by the product, but (I think) undetectable from public keys alone. 3) Select a random seed and using a good PRNG, make the rest of generation process deterministic based on the seed. Use the "deadbeef" technique to select a modulus that has this seed as its least significant bytes. Factorise by extracting the seed from the modulus and repeating the deterministic key generation. This is detectable only by reverse engineering. 4) Select a random seed and use a short key PKE key exchange system (e.g. Elliptic curve) to generate a session key and a key exchange cyphertext. Use a key generation similar to (3) except that you seed the PRNG with the session key and deadbeef to make a key ending in the key exchange cyphertext. Factorise by extracting and decrypting the session key (requires a secret key), and repeating the key generation. Again this is only detectable by reverse engineering, but even after executing the reverse engineering you still cannot factor the keys generated because the program only contains the public key not the secret key. Method (4) is an interesting example of a "locked back-door". There is often an unstated assumption that back-doors have to be open. i.e. If you can find them you can get in. It isn't always true. Whereas it seems intuitively unlikely, it is not inconceivable that there is a way of putting a locked back-door into some forms of Feistel ciphers. The NSA would have been reluctant to put an open back-door into DES, but they would not have hesitated to put in a locked back-door. In my opinion the only safe assumption is that they could and they did. In cryptography you shouldn't trust your intuition, code with source or unexplained algorithm components. Ian Ian_Miller(a)bifroest.demon.co.uk FAI-D10204 PGP key 1024/FCE97719 FP: 2A 20 46 10 E5 96 27 40 91 B1 95 BA CA D3 BC 14 Antworten auf Deutsch waeren mir angenehm. -- http://yakko.cs.wmich.edu/~frogfarm ...for the best in unapproved information Tell your friends 'n neighbors you read this on the evil pornographic Internet "Where one burns books, one will also burn people eventually." -Heinrich Heine People and books aren't for burning. No more Alexandrias, Auschwitzs or Wacos.

1 0

Extra Income
by pal＠king.cts.com 17 Dec '03

17 Dec '03

*********************************************************************** Our Research Has Indicated That The Following Message Will Be Of Interest To You. *********************************************************************** Imagine what you can do with... UP TO $800.00 A WEEK EXTRA INCOME! Here's How To Get Started Let me tell you which companies to contact so you can start to receive your checks. They can be $200.00, $400.00, even $800.00 per week, depending on what you do. You can earn this excellent income right at home. And you work only when you want to. My name is Henry Summers. I investigate income opportunities that are advertised in magazines or by mail or are listed in home work directories and other sources. Then I talk to people who are actually using these opportunities. I ask how much money they make... and whether they enjoy the work. This helps me direct you to the best opportunities that are available today. Ones that people are using right now to earn all the money they want. Get Paid For Stuffing Envelopes. No Fees. Nothing To Buy. This easy work is very appealing, but most people do not know how to get it. That's because so many of the envelope stuffing programs being advertised are not what you expect. And you don't find that out until after you send in your money. Let me tell you the real facts. With true envelope stuffing... * You do not need to pay any fee or buy any materials to get started. * You do not do any advertising or handle any orders. * All printing, postage, and mailing lists are supplied free by the companies that pay you. * Your pay is based entirely on how many envelopes you complete. Rosie Martinez is an example of someone who earns money stuffing envelopes. The company delivers all the materials right to her door. She stuffs the envelopes, seals them, and applies the mailing labels and postage stamps that are supplied. Then she gets paid for every envelope completed. Rosie says, "I'm retired, and I enjoy having something to do. I usually watch television while I work. The home shopping shows are much more fun now that I have money to spend." If you'd like to do this kind of work, just follow the directions in Chapter 3 of my book "Real Home Income". Or try any of the other opportunities covered. Hundreds of companies are ready to help you make money. I'll tell you what each one has available now. Choose the kind of work you like and write to the companies who offer it. Pick any you want. You can work as an independent contractor for as many companies as you have time for. There are no qualifications to meet, so you will not be turned down. I guarantee it. If you don't like one company or you want to make more money, there are plenty of others you can try. Get Paid For Assembling Miniatures Gina Walker of Texas likes to assemble miniature furniture for doll houses. All the necessary materials are supplied by the company that pays her. She puts them together and sends them back to the company. Everything is conveniently handled by mail and UPS. The company sends her a nice pay check for each batch she completes. Gina says: "I really like the work, and the extra money helps pay my bills. I'm glad I found out about these companies." You can get paid the same way. And you don't have to make miniatures. You can choose from many other types of work. You can sew baby bonnets, assemble beaded jewelry, crochet doll clothes, make wooden items, assemble stuffed animals, paint figurines, weave rattan reed, and many more. You get the names and addresses of over 50 companies that will pay for things you make or assemble at home. No experience is required, and it makes no difference where you live. Almost all the companies supply the needed materials. Just do the work and get paid for each batch you send back. Wouldn't you like to get those pay checks? I'll show you how to get started fast. How I Made $800.00 Per Week After Losing My Job I became interested in home income opportunities several years ago when I lost my job. I sent for dozens of money making offers. Most were totally worthless. Others did not appeal to me. But circular mailing caught my interest... and it actually worked. In just six weeks, I was making over $800.00 a week working part time at home. It was better than my previous job. I soon paid off my bills and bought a new car. Yet that was only the beginning. As I learned more about it and tried different things, the money poured in even faster. It made a huge difference when I applied certain secrets that are used by the experts. I was amazed at how profitable it could be. In "Real Home Income" you'll learn how to use those secrets yourself. I'll tell you which companies to contact to get started. I'll show you some simple steps you can take to double your income without doing any more work. If you want, you can do all of this without handling any orders. Your name and address does not have to appear on anything you mail. You just mail circulars for companies and receive nice fat checks from them. With my proven methods, you can soon be earning more money than you ever imagined. Just follow my directions, and you can start receiving checks from the same companies I do. Receive One Dollar For Each Envelope You Stuff. Envelopes Come To You Already Stamped And Addressed. This easy work is advertised by over thirty- five companies. But they require that you pay $25.00 to $45.00 to register in their program. And then the program seldom turns out to be what you'd expect. That's where my book can help out. I describe the three kinds of mail programs that pay one dollar per envelope. But there is only ONE that I recommend. Not only is it more profitable overall, but you don't have to pay any fee to do it. Not even a dollar. Read about "The World's Best Dollar- Per- Envelope Program" in Chapter 4. How To Avoid Disappointment So many worthless offers are commonly advertised that many people give up before they come across a good one. That won't happen to you when you have my book. It tells you exactly how to recognize and avoid worthless offers. The most common ripoffs are covered in detail. This knowledge can save you a great deal of time and money. You can then take advantage of the many practical, down- to- earth opportunities that are described. Ones that enable you to start making money fast. Even just one extra source of income can make a big difference in your standard of living. Start To Earn Money In 48 Hours When you get the book, look over the many excellent opportunities. Each listing includes a brief description of what is offered. Write to the companies you like and request an application form. They have openings right now, and they'll be happy to get you started. You can begin to make money even faster if you choose one of the programs or plans that the book describes in detail. I'll tell you everything you need to know to get started. By taking a few simple steps, you can already be making money just 48 hours after you receive the book. Unlimited No Nonsense Guarantee "Real Home Income" costs just $29.95 plus $3.00 for postage and handling. I'm so confident you can make the money I've talked about that I back it with a lifetime, money- back guarantee. If at any time you feel the book has not helped you make all the money you want, just send it back. I'll promptly send you a full refund of everything you paid, including postage and tax. Start to enjoy more income and a better life as soon as possible. Please complete the order form and mail it today. Everything will be rushed to you by first class mail. Sincerely, Henry Summers P.S. I've recently discovered an amazingly profitable opportunity. One person I talked to made $20,000 in his first six weeks... working right at home in his spare time. It is not multi- level marketing. I've never seen anything like it before. I'l give you a toll free number to call so you can get started. Please Print and Mail This Order Form ----------------------------------------------------------------------------------------------- SUMMERS PUBLICATIONS # 30516 1010 Calle Cordillera, P.O. Box 3127 San Clemente, CA 92672 ( ) Yes, I would like to get started. Please rush me "Real Home Income" under your lifetime money- back guarantee. Enclosed is $29.95 plus $3.00 for postage and handling. $32.95 total. (If you live in California, please send $34.95) Name____________________________________________ Address___________________________________________ City, State, Zip_____________________________________ -------------------------------------------------------------------------------------------------

1 0

(fwd) New keyserver available
by frogfarm＠yakko.cs.wmich.edu 17 Dec '03

17 Dec '03

>From: tage(a)cc.uit.no (Tage Stabell-Kulo) Newsgroups: comp.security.pgp.tech Subject: New keyserver available Date: 24 Jan 1997 16:11:26 GMT Lines: 12 Message-ID: <5camve$3d4(a)news.uit.no> A new PGP keyserver, still _very_ experimental, is available at host dslab1.cs.uit.no at port 24162, use telnet(1). In general it will find a key in a few seconds. Your comments and suggestions are solicited. -- //// Tage Stabell-Kuloe | e-mail: Tage(a)ACM.org //// /// Department of Computer Science/IMR | Phone : +47-776-44032 /// // 9037 University of Tromsoe, Norway | Fax : +47-776-44580 // / "'oe' is '\o' in TeX" | URL:http://www.cs.uit.no/~tage/ -- http://yakko.cs.wmich.edu/~frogfarm ...for the best in unapproved information "We think people like seeing somebody in a uniform on the porch." -US Postal spokeswoman, quoted in AP, 1/27/96. I don't know about you, but most people I know who saw someone in uniform on their porch would pull out the shotgun...

1 0

(fwd) Re: PGP implementation source code
by Damaged Justice 17 Dec '03

17 Dec '03

[The discussion started with Pretty Safe Mail, the recent "PGP-compatible" Mac program, and whether or not it was safe. Source code is not available. Some authors noted that PSM was much slower than PGP, but so far lives up to its promise of user-friendliness. A Win95 version is in the works.] >From: Ian_Miller(a)bifroest.demon.co.uk (Ian Miller) Newsgroups: comp.security.pgp.discuss,comp.security.pgp.resources Subject: Re: PGP implementation source code (was "Imminent Death of PGP?" revisited) Date: Fri, 24 Jan 1997 19:55:46 +0000 Lines: 66 Message-ID: <AF0EC44296683DACD(a)bifroest.demon.co.uk> In article <5c2kap$1tu(a)topcat.uk.gdscorp.com>, Steve Gilham <steveg(a)uk.gdscorp.com> wrote: >PGP defines, but, IIRC does not inspect, a comment packet type. This >packet type could be added to a .pgp file and contain anything the >implementor wished (your plaintext secret key if it has been used in >this instance of the program, any IDEA key used, your passphrase, if >given) without any standard PGP implementation being aware of it The IDEA initialisation vector could also be used as a subliminal channel, it is only 8 bytes but it could (for example) leak a random 60 bits of one prime in your secret key with the remain 4 bits saying which set of 60 bits. Worse is the possibility that the program could put a back door into RSA key generation to make the modulus trivially factorisable by someone in the know. There are a number of mechanisms for this of varying detectability up to detectable only by reverse-engineering. Here are some of the (endless) possibilities in order of increasing sophistication:- 1) Make one of the primes a constant. Factorise by dividing by this number. Detectable by inspection of public keys alone. (For more details, see my article "There are no common factors in the Public keyring", 13th Jan in comp.security.pgp.announce.) 2) Select the first prime P at random but make second prime Q the smallest prime larger than PK where K is a constant. Factorise by searching from root(N/K). Probably detectable by suitable inspection of several secret keys generated by the product, but (I think) undetectable from public keys alone. 3) Select a random seed and using a good PRNG, make the rest of generation process deterministic based on the seed. Use the "deadbeef" technique to select a modulus that has this seed as its least significant bytes. Factorise by extracting the seed from the modulus and repeating the deterministic key generation. This is detectable only by reverse engineering. 4) Select a random seed and use a short key PKE key exchange system (e.g. Elliptic curve) to generate a session key and a key exchange cyphertext. Use a key generation similar to (3) except that you seed the PRNG with the session key and deadbeef to make a key ending in the key exchange cyphertext. Factorise by extracting and decrypting the session key (requires a secret key), and repeating the key generation. Again this is only detectable by reverse engineering, but even after executing the reverse engineering you still cannot factor the keys generated because the program only contains the public key not the secret key. Method (4) is an interesting example of a "locked back-door". There is often an unstated assumption that back-doors have to be open. i.e. If you can find them you can get in. It isn't always true. Whereas it seems intuitively unlikely, it is not inconceivable that there is a way of putting a locked back-door into some forms of Feistel ciphers. The NSA would have been reluctant to put an open back-door into DES, but they would not have hesitated to put in a locked back-door. In my opinion the only safe assumption is that they could and they did. In cryptography you shouldn't trust your intuition, code with source or unexplained algorithm components. Ian Ian_Miller(a)bifroest.demon.co.uk FAI-D10204 PGP key 1024/FCE97719 FP: 2A 20 46 10 E5 96 27 40 91 B1 95 BA CA D3 BC 14 Antworten auf Deutsch waeren mir angenehm. -- http://yakko.cs.wmich.edu/~frogfarm ...for the best in unapproved information Tell your friends 'n neighbors you read this on the evil pornographic Internet "Where one burns books, one will also burn people eventually." -Heinrich Heine People and books aren't for burning. No more Alexandrias, Auschwitzs or Wacos.

1 0

Re: Homo/bi/sexuals Most Destructive (fwd)
by Jim Choate 17 Dec '03

17 Dec '03

Forwarded message: > Date: Fri, 24 Jan 97 21:33:41 +0000 > From: "Attila T. Hun" <attila(a)primenet.com> > Subject: Re: Homo/bi/sexuals Most Destructive Much drivel about AIDS deleted. > One of the saddest commentaries on the entire problem is the > man, a Pan-American flight steward, who was identified as carrier > #1 by the Communicable Disease Center (CDC) in Atlanta; he died The correct term is 'Patient 0'. Jim Choate CyberTects ravage(a)ssz.com

1 0

(fwd) New keyserver available
by Damaged Justice 17 Dec '03

17 Dec '03

>From: tage(a)cc.uit.no (Tage Stabell-Kulo) Newsgroups: comp.security.pgp.tech Subject: New keyserver available Date: 24 Jan 1997 16:11:26 GMT Lines: 12 Message-ID: <5camve$3d4(a)news.uit.no> A new PGP keyserver, still _very_ experimental, is available at host dslab1.cs.uit.no at port 24162, use telnet(1). In general it will find a key in a few seconds. Your comments and suggestions are solicited. -- //// Tage Stabell-Kuloe | e-mail: Tage(a)ACM.org //// /// Department of Computer Science/IMR | Phone : +47-776-44032 /// // 9037 University of Tromsoe, Norway | Fax : +47-776-44580 // / "'oe' is '\o' in TeX" | URL:http://www.cs.uit.no/~tage/ -- http://yakko.cs.wmich.edu/~frogfarm ...for the best in unapproved information "We think people like seeing somebody in a uniform on the porch." -US Postal spokeswoman, quoted in AP, 1/27/96. I don't know about you, but most people I know who saw someone in uniform on their porch would pull out the shotgun...

1 0