Authen::Passphrase::MySQL323 - passphrases using the MySQL v3.23 algorithm

       Andrew Main (Zefram) <zefram@fysh.org>

       Authen::Passphrase::MySQL323->new(ATTR => VALUE, ...)
           Generates  a  new  passphrase  recogniser  object  using  the  MySQL  v3.23 algorithm.  The following
           attributes may be given:

           hash
               The hash, as a string of eight bytes.  The first and fifth bytes must have their top bit clear.

           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.

       Copyright (C) 2006, 2007, 2009, 2010, 2012 Andrew Main (Zefram) <zefram@fysh.org>

       An object of this class encapsulates a passphrase hashed using the algorithm used by MySQL from version
       3.23.  This is a subclass of Authen::Passphrase, and this document assumes that the reader is familiar
       with the documentation for that class.

       The MySQL v3.23 hash scheme is composed entirely of linear operations.  It accepts an arbitrarily long
       passphrase, and ignores all space and tab characters.  No salt is used.  62 bits of hash are generated.
       Each character influences only a minority of the result bits, so similar passphrases of the same length
       have noticeably similar hashes.

       In MySQL the hash is represented as a string of sixteen lowercase hexadecimal digits.

       Warning: This is not a serious cryptographic algorithm.  Do not use for any security purpose.

       This module is free software; you can redistribute it and/or modify it  under  the  same  terms  as  Perl
       itself.

perl v5.34.0                                       2022-06-08                  Authen::Passphrase::MySQL323(3pm)

       $ppr->hash
           Returns the hash value, as a string of eight bytes.

       $ppr->hash_hex
           Returns the hash value, as a string of 16 hexadecimal digits.

       $ppr->match(PASSPHRASE)
           This method is part of the standard Authen::Passphrase interface.

       Authen::Passphrase::MySQL323 - passphrases using the MySQL v3.23 algorithm

       Authen::Passphrase, Crypt::MySQL

               use Authen::Passphrase::MySQL323;

               $ppr = Authen::Passphrase::MySQL323->new(
                       hash_hex => "2af8a0a82c8f9086");

               $ppr = Authen::Passphrase::MySQL323->new(
                       passphrase => "passphrase");

               $hash = $ppr->hash;
               $hash_hex = $ppr->hash_hex;

               if($ppr->match($passphrase)) { ...