December 2003 - cypherpunks-legacy

Re: Regulation of citizen-alien communications (Was: Choices)
by tcmay＠got.net 17 Dec '03

17 Dec '03

At 7:02 AM 2/11/96, lmccarth(a)cs.umass.edu wrote: >Padgett writes: >> Gov does have the right (in fact the duty) to regulate communications >> between citizens and non-citizens/sites in other lands > >(not wishing to start a flamewar) Why do you think so ? It isn't so. There are no restrictions, regulations, rules, or guidelines about communicating with non-citizens/sites. None. No permits are needed, no forms have to be filled out, no government offices have to be visited to explain one's reasons for communicating with a non-citizen. Just pick up the phone, or type a message in your computer, or whatever. We citizens of the U.S. do it many times a day. (There are two special cases, which hardly make Padgett's point: "Trading with the Enemy Act" sorts of restrictions which limit commercial contacts with Cuba, North Korea, and a few other countries. And the espionage laws. That is, give nuclear weapons info to North Korean and you're in big trouble. And there are various other kinds of minor rules, such as that no citizen may engage in private diplomacy, bypassing the normal channels. I don't believe these special cases are what Padgett could have meant when he described the regulatory powers of government.] --Tim May, who is even now communicating with foreigners without regulation Boycott espionage-enabled software! We got computers, we're tapping phone lines, we know that that ain't allowed. ---------:---------:---------:---------:---------:---------:---------:---- Timothy C. May | Crypto Anarchy: encryption, digital money, tcmay(a)got.net 408-728-0152 | anonymous networks, digital pseudonyms, zero W.A.S.T.E.: Corralitos, CA | knowledge, reputations, information markets, Higher Power: 2^756839 - 1 | black markets, collapse of governments. "National borders aren't even speed bumps on the information superhighway."

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POINTERS: 02 08 96 Edupage
by James M. Cobb 17 Dec '03

17 Dec '03

Friend, 02 08 96 Edupage includes-- COPYRIGHT IN THE DIGITAL AGE (European Film Companies Alliance: "It's mine!") INTERNET USAGE POLICIES (Employees' rights: NOT!) Cordially, Jim NOTE. Archives: http://www.educom.edu Edupage dated 02 08 96 is archived under date 02 09 96.

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Re: China
by Bill Stewart 17 Dec '03

17 Dec '03

At 07:18 PM 2/10/96 +0530, you wrote: > Remember that starting this year, satellites of Iridium and other >LEO satellite projects will start to go up, spreading bandwidth around >the world. How will the Chinese government build a firewall against >satellites? Say, for instance orbiting anonymous remailers with pgp? Will >happen some day. Remember that much of censorship, as with cryptography, is economics. With Iridium satellite time at $3/minute, charged to the recipient, it's well within the financial means of a Banned Pharmaceutical Wholesaler, and well outside the financial means of an average Chinese university student, partly because the Chinese economy has much lower price and wage structures than the major Western economies do. On the other hand, renting a few gigabytes per day of satellite broadcast time to broadcast isn't out of the question, or at least renting a few tens of megabytes per day wasn't out of the question a couple years ago :-) On the other hand, as you say, if the Chinese government tries a Tien-an-men in cyberspace, the students _will_ have better tanks. #-- # Thanks; Bill # Bill Stewart, stewarts(a)ix.netcom.com / billstewart(a)attmail.com +1-415-442-2215 # http://www.idiom.com/~wcs Pager +1-408-787-1281

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Re: American Reporter on CDA 2/8/96 (fwd)
by Bill Stewart 17 Dec '03

17 Dec '03

At 10:28 AM 2/10/96 +0000, Sean Gabb. wrote: >What a splendid article! I will keep it on disk forever. Congratulations! You're now an Unindicted Co-Conspirator! #-- # Thanks; Bill # Bill Stewart, stewarts(a)ix.netcom.com / billstewart(a)attmail.com +1-415-442-2215 # http://www.idiom.com/~wcs Pager +1-408-787-1281

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Re: Privacy Without Tears
by Bill Stewart 17 Dec '03

17 Dec '03

>>If everyone not only has a link to these pages in text, but also has their >>"PGP secured!", or similar little graphic on their pages, linked to these >>sites as well, it would save a lot of people a lot of redundant explaining >>and it would help spread the word about PGP like wildfire to the masses. > >I like that a lot! A nifty graphic would be the old-fashioned engraving of a >padlock on the O'Reilly book about PGP. ViaCrypt's PGP version for Windows has a more modern-looking padlock; the icon I use for the Program Manager group I keep PGP, Private Idaho, etc. in is the Safe icon that's one of Program Manager's builtins. #-- # Thanks; Bill # Bill Stewart, stewarts(a)ix.netcom.com / billstewart(a)attmail.com +1-415-442-2215 # http://www.idiom.com/~wcs Pager +1-408-787-1281

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No Subject
by Julian Assange 17 Dec '03

17 Dec '03

>From proff Sat Feb 10 18:09:57 1996 Subject: new zip cracking code To: cypherpunks(a)toad.com Date: Sat, 10 Feb 1996 18:09:57 +1100 (EST) X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 3806 Does anyone have any pointers to cryptanalysis papers on the Zip encryption scheme (presented below)? I've seen a few MSDOS executeables which used some sort of brute force attack, which didn't seem particularly intelligent or effective for long passwords. If anyone has some pointers, or source I'd be glad to hear of it. From what I can see of Schlafly's algorithm a bute force attack could be speed up a great deal by pre-compution and expansaion of elements of the first 3 or so rounds at the very least. Ideas anyone? Decryption ---------- The encryption used in PKZIP was generously supplied by Roger Schlafly. PKWARE is grateful to Mr. Schlafly for his expert help and advice in the field of data encryption. PKZIP encrypts the compressed data stream. Encrypted files must be decrypted before they can be extracted. Each encrypted file has an extra 12 bytes stored at the start of the data area defining the encryption header for that file. The encryption header is originally set to random values, and then itself encrypted, using 3, 32-bit keys. The key values are initialized using the supplied encryption password. After each byte is encrypted, the keys are then updated using psuedo-random number generation techniques in combination with the same CRC-32 algorithm used in PKZIP and described elsewhere in this document. The following is the basic steps required to decrypt a file: 1) Initialize the three 32-bit keys with the password. 2) Read and decrypt the 12-byte encryption header, further initializing the encryption keys. 3) Read and decrypt the compressed data stream using the encryption keys. Step 1 - Initializing the encryption keys ----------------------------------------- Key(0) <- 305419896 Key(1) <- 591751049 Key(2) <- 878082192 loop for i <- 0 to length(password)-1 update_keys(password(i)) end loop Where update_keys() is defined as: update_keys(char): Key(0) <- crc32(key(0),char) Key(1) <- Key(1) + (Key(0) & 000000ffH) Key(1) <- Key(1) * 134775813 + 1 Key(2) <- crc32(key(2),key(1) >> 24) end update_keys Where crc32(old_crc,char) is a routine that given a CRC value and a character, returns an updated CRC value after applying the CRC-32 algorithm described elsewhere in this document. Step 2 - Decrypting the encryption header ----------------------------------------- The purpose of this step is to further initialize the encryption keys, based on random data, to render a plaintext attack on the data ineffective. Read the 12-byte encryption header into Buffer, in locations Buffer(0) thru Buffer(11). loop for i <- 0 to 11 C <- buffer(i) ^ decrypt_byte() update_keys(C) buffer(i) <- C end loop Where decrypt_byte() is defined as: unsigned char decrypt_byte() local unsigned short temp temp <- Key(2) | 2 decrypt_byte <- (temp * (temp ^ 1)) >> 8 end decrypt_byte After the header is decrypted, the last two bytes in Buffer should be the high-order word of the CRC for the file being decrypted, stored in Intel low-byte/high-byte order. This can be used to test if the password supplied is correct or not. Step 3 - Decrypting the compressed data stream ---------------------------------------------- The compressed data stream can be decrypted as follows: loop until done read a charcter into C Temp <- C ^ decrypt_byte() update_keys(temp) output Temp end loop -- +----------------------------------+-----------------------------------------+ |Julian Assange | "if you think the United States has | |FAX: +61-3-9819-9066 | stood still, who built the largest | |EMAIL: proff(a)suburbia.net | shopping centre in the world?" - Nixon | +----------------------------------+-----------------------------------------+

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WIT_nes
by John Young 17 Dec '03

17 Dec '03

The NYT Web site does not seem to offer today's Sunday magazine article on the federal Witness Security Program, as revealed through one family's trauma of official death and rebirth: WIT_nes (38k in 2 parts)

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Re: Reasons in support of crypto-anarchy WAS Re: Why am I (fwd)
by John Young 17 Dec '03

17 Dec '03

It's hard to tell the difference between "Assasination Politics" and government-sponsored provocateurism, a well-documented practice to stigmatize anarchical and anti-authoritarian ventures. However, it takes guts and thick skin to advocate overthrow of authority, knowing that reasonable people will think you're a nut seeking celebrity martyrdom. Happily for the careers of agent-and-anarchist back-stabbing back-scratchers, there is no easy way to know for sure which is which, or even if there's any difference when the media juggernauts are provocateuring both roles for melodramatic infotainment.

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URLs for Anon remailers?
by lunaslide＠loop.com 17 Dec '03

17 Dec '03

Anybody got some good URLs for info on anonymous remailers for novices and experienced users alike? I need to know which are which so I can hand them out like candy to my .edu friends who aren't _as_ net savvy, but aren't dumb as dirt clods either. Much appreciated. lunaslide "Prohibition... goes beyond the bounds of reason in that it attempts to control a man's appetite by legislation and makes a crime out of things that are not crimes... A prohibition law strikes a blow at the very principles upon which our government was founded." - -- Abraham Lincoln On the meridian of time there is no injustice, only the poetry of motion creating the illusion of truth and drama. Henry Miller ________________________________________________________________ -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.2 mQCPAzEX3QEAAAEEAOGQjhnqGH29pO1WDaXs5GFOVPhCBWyYEk9XEwRmscjveWzH AhA6DeOA480zWNqQURyqE2yPmR8WzT+OXYqmeiQiycKyFA41Vs/Ruf+gXXxe7uXS L5BK3K8oKbfoH0D5/TAkMT4r6BprXFQz4pFc3gY2SSaSPElpMjKHaKBsRsyRABEB AAG0HUplZmYgQ29ubiA8bHVuYXNsaWRlQGxvb3AuY29tiQCVAwUQMRffHzKHaKBs RsyRAQGNhwP9E9xEZ9/LCKnhgtnrqgD7pDoXG2pCy8FoyfFjoImGkG+jF1wELXmB Z0mf8F8CgYkys0mif1XeGDMelr1gzlZAm6LgQt4kcvztMW/aRLn18QP+iwltVT/L p8D37mitOjvuk46sWgAChIaPPPIeg/EaYQjQkmlpWKsEYIoTRy+E8mU= =4Gku -----END PGP PUBLIC KEY BLOCK-----

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Re: China
by dlv＠bwalk.dm.com 17 Dec '03

17 Dec '03

Bill Stewart <stewarts(a)ix.netcom.com> writes: > At 01:54 PM 2/10/96 EST, you wrote: > >It's not difficult to imagine that governments will seek to regulate the > >possession of modems again. Some may recall that in the U.S. it used to be > >technically illegal to connect a modem to the phone jack without a permissio > >from AT&T. > > Actually, permission from the local phone companies, who owned the system, > I assume? (Though I don't actually remember which parts of The Phone Company > were involved in the Carterphone decision.) Nope. I used modems back when the local phone company _was AT&T. :-) --- Dr. Dimitri Vulis Brighton Beach Boardwalk BBS, Forest Hills, N.Y.: +1-718-261-2013, 14.4Kbps

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