- cypherpunks-legacy - lists.cpunks.org

PGP question
by Nickey MacDonald 19 Jun '93

19 Jun '93

I am working on an interesting application using PGP.. and I have come upon a snag. I want to have a message with more that one "pgp block" ie more than one file encrypted and then all the encrypted files concatenated as one new file. If you just use "pgp file" it tries to overwrite the same file each time. If you give it multiple -o specifications, it only takes the last one, and tries to keep overwriting it. If you use -p, it names each file based on what the original encryptor called it, … [View More]

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Re: RRe: Blasting Bidzos Blather
by George A. Gleason 19 Jun '93

19 Jun '93

Consider also the possibility that Bidzos might have felt that it was either sell it now or have it seized later. National security seizures of crypto patents are nothing new. "He who turns and sells away, will live to sell another day..."

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Re: Blasting Bidzos Blather
by Doug Porter 19 Jun '93

19 Jun '93

> NIST had no choice Pure bull puckey. First, they could have let DSA die. The commercial sector, particularly banks, would have come up with alternatives we could trust. Second, they could do what competent engineers have done for many decades: designed around inconvenient patents. Third, if they knew they weren't up to it, they could have asked for public help in that design. Fourth, they could have challenged PKP's patents on their merits. Fifth, they could have worked to get … [View More]

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Violation of 3rd Amendment
by starr＠genie.slhs.udel.edu 19 Jun '93

19 Jun '93

I don't think it's correct to say that the 3rd amendment isn't violated. If you consider police forces standing armies and policemen soldiers, then the cases of confiscation of private homes under civil forfeiture for the occupation of cops constitutes violation of the 3rd amendment. The problem with this is that it takes some doing to persuade that police are standing armies and cops soldiers by different names. Tim Starr - Renaissance Now! Assistant Editor: Freedom Network News, the … [View More]

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weak pseuodrandom number generator
by wet!naga 19 Jun '93

19 Jun '93

A pseudorandom number generator recently proposed here, namely: int rand1(int seedval) { return (seed * 183041 % 183319 + 1); } needs some cleaning up. It should be something like: unsigned long rand1(unsigned long n) { return ( ( ( n * 183041L) % 183319 ) + 1 ); } where n is initally set to some seed value. However, this is particularly weak, and quickly degenerates into a cycle, usually of length 208, as the following program will confirm: #include <stdio.h> #include <… [View More]

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correction on pgp 2.3 problem
by Linda Boyd 19 Jun '93

19 Jun '93

Please forgive me! It seems that the signature generated by the pgp 2.3 _IS_ good (according to 2.2), in any form. It's just that pgp 2.3 will not read a signature that is appended to an ascii message and ascii armored. If the signature is in a separate file, or if it isn't armored, it will read it fine. Just not a message with the signature block attached to it... So the problem is in the reading of the pgp signature block, not in the generation of the signature. … [View More]

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The Computer Shopper cipher
by Tyler Yip - UnixWeenie 19 Jun '93

19 Jun '93

Compared to the lines of the Computer Shopper program, how would this variant evaluate out time-complexity wise? I'm not sure how sophisticated the attacks on pseudo-random generators are. This one includes an random generator shift, based upon the random numbers. ----------------------------------------------------------------------------- #include <stdio.h> static int seed; int rand1(int seedval) { return (seed * 183041 % 183319 + 1); } int rand2(int seed) { return (seed * 502001 %… [View More]

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PGP 2.3
by Linda Boyd 19 Jun '93

19 Jun '93

Help!! I don't have Usenet access, so I can't post this on the pgp newsgroup, and this is the only other place I know of to ask this... I just got pgp23.zip and pgp23src.zip from soda, and I can't make it give valid signatures with the -a option (well, actually the Armor=on line in the config.txt file)! It will work correctly if Armor=off, and if the file is also encrypted, but a straight signature with ascii armor appended to the message doesn't work. Even pgp22 gives me an … [View More]

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backpack left at Cygnus
by Brendan Kehoe 19 Jun '93

19 Jun '93

There's a steel blue backpack in my office here at Cygnus; it's got "Kahn on Codes" in it. If it's yours, drop me a line and we can figure out a way for you to get it. Brendan -- Brendan Kehoe brendan(a)cygnus.com Cygnus Support, Mountain View, CA +1 415 903 1400 ``Ya know Quaker Oats make you feel good twice?'' Hmm.

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Re: Software infrastructure
by karn＠qualcomm.com 19 Jun '93

19 Jun '93

I'm just catching up on a very large mail backlog (much of which is Cypherpunks). Many Cypherpunks are apparently unaware of the security work going on within the Internet Engineering Task Force (IETF). Besides the infamous Privacy Enhanced Email (PEM), there are lesser known groups working on application layer security interfaces and on IP-level security (encryption and/or authentication of individual IP datagrams). Okay, I'm not saying all this work is being done right. In some cases it's … [View More]

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