hashalot(1) [debian man page]
HASHALOT(1) General Commands Manual HASHALOT(1) NAME
hashalot - read a passphrase and print a hash SYNOPSIS
hashalot [ -s SALT ] [ -x ] [ -n #BYTES ] [ -q ] [ HASHTYPE ] HASHTYPE [ -s SALT ] [ -x ] [ -n #BYTES ] [ -q ] DESCRIPTION
hashalot is a small tool that reads a passphrase from standard input, hashes it using the given hash type, and prints the result to stan- dard output. Warning: If you do not use the -x option, the hash is printed in binary. This may wedge your terminal settings, or even force you to log out. Supported values for HASHTYPE: ripemd160 rmd160 rmd160compat sha256 sha384 sha512 OPTIONS
The option -s SALT specifies an initialization vector to the hashing algorithm. You need this if you want to prevent identical passwords to map to identical hashes, which is a security risk. If the -x option is given then the hash will be printed as a string of hexadecimal digits. The -n option can be used to limit (or increase) the number of bytes output. The default is as appropriate for the specified hash algo- rithm: 20 bytes for RIPEMD160, 32 bytes for SHA256, etc. The default for the "rmd160compat" hash is 16 bytes, for compatibility with the old kerneli.org utilities. The -q option causes hashalot to be more quiet and not print some warnings which may be superfluous. AUTHOR
Ben Slusky <sluskyb@paranoiacs.org> This manual page was written by Matthias Urlichs <smurf@debian.org>. 09 Feb 2004 HASHALOT(1)
Check Out this Related Man Page
Authen::Passphrase::LANManagerHalf(3pm) User Contributed Perl Documentation Authen::Passphrase::LANManagerHalf(3pm) NAME
Authen::Passphrase::LANManagerHalf - passphrases using half the LAN Manager algorithm SYNOPSIS
use Authen::Passphrase::LANManagerHalf; $ppr = Authen::Passphrase::LANManagerHalf->new( hash_hex => "855c3697d9979e78"); $ppr = Authen::Passphrase::LANManagerHalf->new( passphrase => "passphr"); $ppr = Authen::Passphrase::LANManagerHalf->from_crypt( '$LM$855c3697d9979e78'); $ppr = Authen::Passphrase::LANManagerHalf->from_rfc2307( '{CRYPT}$LM$855c3697d9979e78'); $hash = $ppr->hash; $hash_hex = $ppr->hash_hex; if($ppr->match($passphrase)) { ... $passwd = $ppr->as_crypt; $userPassword = $ppr->as_rfc2307; DESCRIPTION
An object of this class encapsulates half of a passphrase hashed using the Microsoft LAN Manager hash function. This is a subclass of Authen::Passphrase, and this document assumes that the reader is familiar with the documentation for that class. For the complete LAN Manager hash function, see Authen::Passphrase::LANManager. In a spectacularly bad design decision, the Microsoft LAN Manager hash function splits the passphrase into two parts and hashes them separately. It is therefore possible to separate the halves of a LAN Manager hash, and do things with them (such as crack them) separately. This class is about using such a hash half on its own. The half hash algorithm can be used on up to seven Latin-1 characters of passphrase. First the passphrase is folded to uppercase, and zero-padded to seven bytes. Then the seven bytes are used as a 56-bit DES key, to encrypt the fixed plaintext block "KGS!@#$%". The eight byte ciphertext block is the half hash. There is no salt. Warning: Don't even think about using this seriously. It's an exceptionally weak design, flawed in pretty much every respect. CONSTRUCTORS
Authen::Passphrase::LANManagerHalf->new(ATTR => VALUE, ...) Generates a new passphrase recogniser object using the LAN Manager half hash algorithm. The following attributes may be given: hash The hash, as a string of 8 bytes. hash_hex The hash, as a string of 16 hexadecimal digits. passphrase A passphrase that will be accepted. Either the hash or the passphrase must be given. Authen::Passphrase::LANManagerHalf->from_crypt(PASSWD) Generates a new LAN Manager half passphrase recogniser object from a crypt string. The crypt string must consist of "$LM$" followed by the hash in lowercase hexadecimal. Authen::Passphrase::LANManagerHalf->from_rfc2307(USERPASSWORD) Generates a new LAN Manager half passphrase recogniser object from an RFC 2307 string. The string must consist of "{CRYPT}" (case insensitive) followed by an acceptable crypt string. METHODS
$ppr->hash Returns the hash value, as a string of 8 bytes. $ppr->hash_hex Returns the hash value, as a string of 16 hexadecimal digits. $ppr->match(PASSPHRASE) $ppr->as_crypt $ppr->as_rfc2307 These methods are part of the standard Authen::Passphrase interface. SEE ALSO
Authen::Passphrase, Authen::Passphrase::LANManager, Crypt::DES AUTHOR
Andrew Main (Zefram) <zefram@fysh.org> COPYRIGHT
Copyright (C) 2006, 2007, 2009, 2010, 2012 Andrew Main (Zefram) <zefram@fysh.org> LICENSE
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-02-07 Authen::Passphrase::LANManagerHalf(3pm)