December 2003 - cypherpunks-legacy

art encryption...
by Brian.McMurry＠f844.n102.z1.fidonet.org 17 Dec '03

17 Dec '03

-----BEGIN PGP SIGNED MESSAGE----- On Monday, 19-Sep-94 Lile Elam wrote to cypherpunks: > Well, it looks like I have to delve into this subject as I should > really know what's available for signing art. PHOTO>Electronic Imaging vol. 37 no. 6, 1994 had a couple of very comprehensive articles on copyright protection trends. The list of available products included: * Stego (Mac shareware) which can embed data in and retrieve data from PICT images w/o changing the appearance or size. They plan to add other image formats as well as audio and video for both Mac & PeeCee platforms. * Nikon is developing a method of incorporating an electronic signature into their digital cameras. This signature would include lens settings, exposure, time/date, plus the photographer's personal digital signature. They want it to be compatible with AOCE (below). * AOCE (Apple Open Collaboration Environment technology) is integrated into Mac System 7 Pro as Digital Signature Manager and, guess what, it uses RSA licensed public-key encryption. * Kodak and RSA are working on an encryption scheme for photo CDs where only the low-res images are freely viewable, the hi-res ones require a key to access. * Common Ground (Mac & PeeCee) saves text and images as a Portable Document Format(PDF) and has security built-in that can restrict the text/graphics from being copied or printed. * Kodak Pro Photo CD allows copyright information and color settings to be tagged onto any image. This information can latter be read by Kodak Photo CD Access Plus or Photo CD programmer's toolkit. * (icky toggle methods not transcribed) For futher reading they suggest, "Protecting Intellectual Property Rights on the Information Superhighways" by Joseph L. Ebersole. The paper includes discussion of laws, copyright management, encryption, standards, and glyphs-to-video steganography. Published by the Information Industry Association(IIA), Washington, D.C. -----BEGIN PGP SIGNATURE----- Version: 2.6.1 iQCVAwUBLoE6ud2dg1OWsljdAQF8LAQAp0z5bF0IoZtf4W78WvPBkrfcSFPpoQhN +twh6XSZlA9tVlWhNEVwtEU2tTiHvJckjNxHEtk8hFdJwkMkV1ZXbz90iTkQbQ09 99xtMPRdn35dX8mPKRZ3VMq19DxW0bYDkZcjsuHLvPbM6Oj1jcXSnX8inFPX/AvZ kvXbE2giJDA= =mHql -----END PGP SIGNATURE----- --- CNet XFIDO 2.63 * Origin: *AACHEN* 818-972-9440 Burbank, CA FIDONET (1:102/844) -- : Brian McMurry - via mcws.fidonet.org - Public Access (213)256-8371 : ARPA/INTERNET: Brian.McMurry(a)f844.n102.z1.fidonet.org : UUCP: ...!bengal!mcws!844!Brian.McMurry : Compu$erve: >internet:Brian.McMurry@f844.n102.z1.fidonet.org

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RE: It's MEME time!!!
by Allen Robinson 17 Dec '03

17 Dec '03

On Fri, 23 Sep 1994, merriman(a)metronet.com wrote: > How 'bout: > Dorothy Denning: Clipper > [clip her] > > TLA's are AFU > > Dammit, it's *my* net, too! Very good. If I could offer one minor change, how 'bout: Dorothy Denning? Clip 'er! No intent to nitpick on my part. I think they're all deserving of meme-hood. They would make darn fine bumpersticker copy, too. AR

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RE: IBM-Led Consortium. Any thoughts?
by merriman＠metronet.com 17 Dec '03

17 Dec '03

---------------Original Message--------------- This just in. I haven't seen it posted so I thought I would. ===========================begin forwarded message========================= .. <snip> ... As overall Program Manager, IBM will manage the system design, development, and integration, as well as the establishment of commercial channels for delivery of the project's resultant software products, planned for completion in 1998. IBM also will be responsible for skills transfer through its CIM in Higher Education Alliance, a nationwide IBM-sponsored organization consisting of 97 U.S. colleges, universities and technical institutions. ----------End of Original Message---------- Whether or not it works depends on how much IBM is willing/able to let the other players do what they're good at without sticking more than 2 or 3 of it's thumbs in everything. >From a C'punk perspective, I notice there isn't any specific mention of security or privacy in it. >From a "consumer" view, they don't seem to be bothering to ask anyone what they want - looks like "Here's what we're gonna do, like it or lump it." :-( I wonder how much good it would do to email some folks on the list with a list of concerns about the project? Dave Merriman - - - - - - - - - - - - - - - - - - - - - - - - - - Finger merriman(a)metronet.com for PGP/RIPEM public keys and fingerprints. Unencrypted Email may be ignored without notice to sender. PGP preferred. Remember: It is not enough to _obey_ Big Brother; you must also learn to *love* Big Brother.

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CPs write Bumper Stickers
by merriman＠metronet.com 17 Dec '03

17 Dec '03

Got my samples of bumper sticker stock from Williams & Macias today, and it looks *real* good. Nice, heavy paper, feels like some kind of plastic coating on it to make it weather-resistant. The description sheet that came with it says that it can also be run through copiers and offset presses, that it can be drawn on directly, and takes color (dry-toner). W&M is calling them SlapSticks. The 2041 (3 stickers/sheet) has 3 short (but full-width) areas; the 2042 has 2 full-height areas. The stuff also comes with two different adhesives: "temporary" and "removable". The "temporary" is to allow washing off with soap and water; the "removable" is more durable. From the descriptions, it sounds like the difference between a post-it note, and adhesive tape (roughly). Each sticker is on it's own little die-cut area, and the areas are separated with perfs to make separation easier. Prices are $19.95 for 20 sheets, with Bumper Sticker Remover fluid for the "removeable" stickers at $2.75 for 11 oz. can. 2x41 is 3 stickers/sheet, 2x42 is 2 stickers/sheet. Replace x with 0 for removable adhesive, use 1 for "temporary". The number (again) is 1-800-310-0890; Williams & Macias 3707 South Godfrey Blvd. Spokane, WA 99204-5753 (509) 624-5170 Only got sampled one sheet of each kind, though :-( Dave Merriman - - - - - - - - - - - - - - - - - - - - - - - - - - Finger merriman(a)metronet.com for PGP/RIPEM public keys and fingerprints. Unencrypted Email may be ignored without notice to sender. PGP preferred. Remember: It is not enough to _obey_ Big Brother; you must also learn to *love* Big Brother.

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Re: Fast Modular Factorial?
by Jim choate 17 Dec '03

17 Dec '03

> > >If x>n and x is not a prime then the result will again always be 0 since > >we can break x down into factors smaller than n and the previous argument > >removes the various factors. > > Unless I misunderstand you, this isn't true. Any non-prime containing > more prime factors than n! doesn't satisfy this test; nor does any > non-prime containing factors > n. > Will think on this. It seems to me that if you have a even number of prime factors you can multiply them out and get an even number which you should be able to remove easily. Do you mean that the number of prime factors is greater than n! or greater than the number of prime factors of n!? Also, consider that in the case of a x>>n you might actually run out of enough factors smaller than n to remove. This is one case I didn't have time to look at earlier. Right now I am looking at behaviour where x>(n)^1/2 and also when x>(n!)^1/2. > 6! == 2 * 3 * (2*2) * 5 * (2*3) == 720 > 116 == 2 * 2 * 29 > 27 == 3 * 3 * 3 > > 720 mod 116 == 24 > 720 mod 27 == 18 > > 6!= 2 * 3 * 4 * 5 * 6 = 720 116 is > 6 so this does not disprove my assertion. The factor which is left over, ie 29, is prime. 27 is > 6 so this does not seem to disprove it either since in 6! there is a 3 * 3 which removes one of the factors and you are left with 3 which is prime. Consider x=n again, this means that n! is really n(n-1)! and the mod of (n!)modx is equivalent to n(n-1)!modx which leave us with a multiplicitive factor of (n-1)! and a remainder of 0. One other point that may be irrelevant is that n! is always an even number. The reason is that the very last multiplier is 2.

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Re: Fast Modular Factorial?
by Hal 17 Dec '03

17 Dec '03

I find that for the numbers I have tried, that (p-1)! mod p = (p-1) if p is prime, else it equals 0, with one exception (p=4). So if this is true (probably a standard result; it sounds familiar) then it might actually be easier to find the factorial of a larger number mod a prime than a smaller one. Hal

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Re: Fast Modular Factorial?
by chen＠intuit.com 17 Dec '03

17 Dec '03

As a footnote to my previous message, (p - 1)! ~ -1 mod p whenever p is prime (Wilson's theorem). This follows immediately from the general rule that I gave. - Mark - -- Mark Chen chen(a)netcom.com 415/329-6913 finger for PGP public key D4 99 54 2A 98 B1 48 0C CF 95 A5 B0 6E E0 1E 1D

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Another Civil Liberty Group
by Dave Banisar 17 Dec '03

17 Dec '03

Date 9/23/94 Subject Another Civil Liberty Group From Dave Banisar To Cypherpunks List Another Civil Liberty Group Opposes Wiretap Bill The American Civil Liberties Union (ACLU) today wrote to Rep. Jack Brooks, Chairman of the House Judiciary Committee, "to express the ACLU's opposition to the FBI Wiretap Access Bill, H.R. 4922." The organization's position is the latest indication that the legislation is running into serious trouble in Congress for several reasons, including strong opposition from civil liberties and privacy advocates. The bill's proponents had initially hoped to bring it to a vote on the floors of the House and Senate by mid-September. Instead, the bill remains in committees of both houses and is the object of a grassroots campaign to prevent its enactment. Excerpts from the ACLU letter: "The principal problem remains that any digital telephone bill which mandates that communications providers make technological changes for the sole purpose of making their systems wiretap- ready creates a dangerous and unprecedented presumption that government not only has the power, subject to warrant to intercept private communications, but that it can require private parties to create special access. It is as if the government had required all builders to construct new housing with an internal surveillance camera for government use. ... "Moreover, the FBI has not borne the burden of proving why such an extraordinary requirement is necessary. ... "H.R. 4922 proposes a radical and expensive change in our telecommunications structure. The threats it poses, now and prospectively, are real, but the need for it is far less than evident or proven. We urge that your Committee not rush into consideration of this far reaching measure with so little time left in the session." The Electronic Privacy Information Center (EPIC) is urging all concerned individuals and organizations to contact the following members of Congress immediately: Rep. Jack Brooks Sen. Howard Metzenbaum (202) 225-6565 (voice) (202) 224-7494 (voice) (202) 225-1584 (fax) (202) 224-5474 (fax) For more information about the FBI Wiretap Bill, check the Voters Telecomm Watch (VTW) gopher site (gopher.panix.com) or send e- mail to <info(a)epic.org>.

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ATT logo wanted
by merriman＠metronet.com 17 Dec '03

17 Dec '03

Has anyone got a copy of the AT&T logo, or know where I could find one? I'd prefer a vector format, but would accept .gif, etc. I'd like to see if I can put the deathstar logo and the "Had your phones tapped...." tagline on a bumper sticker :-) Dave Merriman - - - - - - - - - - - - - - - - - - - - - - - - - - Finger merriman(a)metronet.com for PGP/RIPEM public keys and fingerprints. Unencrypted Email may be ignored without notice to sender. PGP preferred. Remember: It is not enough to _obey_ Big Brother; you must also learn to *love* Big Brother.

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SlapSticks
by merriman＠metronet.com 17 Dec '03

17 Dec '03

Okay, I've printed my first set of bumper stickers, using the W&M bumper sticker stock for laser printers. It prints out *great*, and the "removeable" adhesive seems to have enough holding power to keep in on a car, but not so much as to become a permanent fixture (anyone seen a Bush in '92 bumper sticker of late? :-). I guess I'll find out this winter how well the SlapSticks withstand wind, rain, etc. here in north Texas... Dave Merriman - - - - - - - - - - - - - - - - - - - - - - - - - - Finger merriman(a)metronet.com for PGP/RIPEM public keys and fingerprints. Unencrypted Email may be ignored without notice to sender. PGP preferred. Remember: It is not enough to _obey_ Big Brother; you must also learn to *love* Big Brother.

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