Article View: sci.crypt
Article #3982Re: Crypt() hackers
From: Adam J. Richter
Date: Wed, 10 Feb 1988 03:06
Date: Wed, 10 Feb 1988 03:06
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Once upon a time I had some ideas similar to Keith Messer's for trying to derive a direct formula for the 56 key bits of DES given the 64 input bits and 64 output bits. I wrote some C code to manipulate big boolean expressions efficiently, and patched the source to crypt(3) to deal with these expressions instead of ints. The stuff lives in the directory weaver.berkeley.edu:/usr/weaver/adamj/C/crypto, which has anonymous ftp that connects to the top of the file system. I heard given an explanation similar Dave Wallace's, and gave up. Adam J. Richter adamj@widow.berkeley.edu ....!ucbvax!widow!adamj Home: (415)549-6377 Work: (415)523-9000 Sun room: (415)642-7762
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!rutgers!mit-eddie!uw-beaver!cornell!rochester!bbn!uwmcsd1!ig!agate!web5h.berkeley.edu!adamj From: adamj@web5h.berkeley.edu (Adam J. Richter) Newsgroups: sci.crypt Subject: Re: Crypt() hackers Keywords: DES, des, crypt() Message-ID: <6931@agate.BERKELEY.EDU> Date: 10 Feb 88 03:06:48 GMT References: <538@ddsw1.UUCP> <8045@eddie.MIT.EDU> <980@sdcc13.ucsd.EDU> <22925@ucbvax.BERKELEY.EDU> Sender: usenet@agate.BERKELEY.EDU Reply-To: adamj@widow.berkeley.edu (Adam J. Richter) Organization: University of California, Berkeley Lines: 15