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[REBOL] Re: From the Crypt

From: ryanc:iesco-dms at: 28-Aug-2001 16:28

Oops! Sorry for any confusion! --Ryan Holger Kruse wrote:
> On Tue, Aug 28, 2001 at 02:25:55PM -0700, Ryan Cole wrote: > > Worst case, here is a link to the source: > > > > > > That does not look like the source code to crypt(). I don't see the > function crypt() in it anywhere, and the method seems all wrong. > > The exact implementation of crypt() varies widely across Unix versions. > The most common variant uses DES with a fixed "cleartext" and a variable > "key" for one-way encryption. This is what programs that transfer > crypt()ed passwords across TCP links (e.g. CVS) usually use. > > There are variations on the length and kind of "salt" used for that. > One other variation of crypt() use MD5, another one uses a combination > of base-64 encoding, Blowfish and ARCFOUR. Most Unix versions have > kernel options or other flags to enable one of these different methods > for their password database. > > REBOL/Command supports all of these algorithms, so it should be possible > to use REBOL/Command to encrypt data in a compatible manner. Decryption > is impossible because of the one-way nature of crypt(). > > One source of Unix encryption C source code (crypt() and others) is > "/pub/OpenBSD/src/lib/libc/crypt" on "". > > -- > Holger Kruse > [holger--rebol--com] > > -- > To unsubscribe from this list, please send an email to > [rebol-request--rebol--com] with "unsubscribe" in the > subject, without the quotes.
-- Ryan Cole Programmer Analyst 707-468-5400