From: "F. Senault" <fred@...>
Date: 2006-12-06T01:55:08+09:00
Subject: Re: String#crypt first 8 characters

Le 05 d�cembre � 14:08, Patrick Plattes a �crit :

> Hello,
> 
> i had a problem with str.crypt - i got every time the same result. The 
> problem is, that this method only use the first 8 characters of the string:

There are workarounds, but I think that's dependent on the OS.

For instance, the *BSD variants usually allow to use the notation
$n$salt in the salt part of the crypt to choose another algorythm (n=1
-> MD5, n=2 -> Blowfish, n=3 ->NT-Hash, at least on FreeBSD) :

>> "abcdefghijklmnop".crypt("$1$8aezq78a")
=> "$1$8aezq78a$reWMwf7b8UtEUWK0LM7pZ/"
>> "abcdefghijklmnopr".crypt("$1$8aezq78a")
=> "$1$8aezq78a$frgoGqHZ6bRujQt7qQeSP."

It seems to give the same results on some Linuxes and FreeBSD, but I
don't know exactly how portable it is.

Fred
-- 
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