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Blowfish and master.passwd cracking (was: John the Ripper v1.5)




bleah.

and i was liking how that long long password field wasn't readable by my
version of crack.  apparently this is something that can read the blowfish
crypt that OpenBSD uses in the master.passwd file, and i figured it may be
of some use or curiosity to those here.


.oO				. . . . http://gravity.hellyeah.com	
e m o r y 			.       husband in training, 
.     Oo.			. 	unix systems engineer.	
. . . . . . . . . . . . . . . . .	OpenBSD advocate.

---------- Forwarded message ----------
Date: Thu, 14 May 1998 22:01:23 +0400
From: Solar Designer <solar@FALSE.COM>
To: BUGTRAQ@NETSPACE.ORG
Subject: John the Ripper v1.5

Hello,

I've just released a new version of John the Ripper, it is available at:
http://www.false.com/security/john/

John the Ripper is a UNIX password cracker, currently available for UNIX,
DOS, WinNT/Win95. Version 1.5 has been tested with Linux x86/Alpha/SPARC,
FreeBSD x86, OpenBSD x86, Solaris 2.x SPARC and x86, Digital UNIX. There's
also a generic make target that should work on most other UNIX systems.

Out of the box, John supports (and autodetects) the following ciphertext
formats: standard and double-length DES-based, BSDI's extended DES-based,
FreeBSD's (and not only) MD5-based, and OpenBSD's Blowfish-based -- with
my own optimized routines for all of them.

 Changes from v1.4 to v1.5
---------------------------
* Everything is re-coded, to be far more extendable, more portable (no
GNU C extensions used, unless __GNUC__ is defined), and more readable.
* Bitslice DES routines: up to 3 times faster on RISC.
* BSDI's extended DES-based ciphertext format support.
* OpenBSD's Blowfish-based ciphertext format support.
* Special assembly DES routines for x86 with MMX: +30% on a Pentium II.
* Improved MD5 routines (both C and x86 assembly), 10...50% faster.
* Smarter length switching in incremental mode.
* ...And a lot of other changes, see doc/NEWS.

Signed,
Solar Designer