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authen::passphrase::eggdropblowfish(3pm) [debian man page]

Authen::Passphrase::EggdropBlowfish(3pm)		User Contributed Perl Documentation		  Authen::Passphrase::EggdropBlowfish(3pm)

NAME

       Authen::Passphrase::EggdropBlowfish - passphrases using Eggdrop's blowfish.mod

SYNOPSIS

	       use Authen::Passphrase::EggdropBlowfish;

	       $ppr = Authen::Passphrase::EggdropBlowfish->new(
		       hash_base64 => "9tpsG/61YqX/");

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

	       $hash = $ppr->hash;
	       $hash_base64 = $ppr->hash_base64;

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

DESCRIPTION

       An object of this class encapsulates a passphrase hashed using the Blowfish-based algorithm used in Eggdrop's blowfish.mod.  This is a
       subclass of Authen::Passphrase, and this document assumes that the reader is familiar with the documentation for that class.

       This hash scheme uses no salt, and does not accept a zero-length passphrase.  It uses the passphrase as a Blowfish key to encrypt a
       standard plaintext block.  The hash is the ciphertext block.  The standard Blowfish key schedule only accepts keys from 8 to 56 bytes long;
       this algorithm relaxes that requirement and accepts any non-zero length.  Up to 72 bytes of passphrase/key are significant; any more are
       ignored.

       In Eggdrop the hash is represented as a "+" followed by twelve base 64 digits.  The first six digits encode the second half of the hash,
       and the last six encode the first half.	Within each half the bytes are encoded in reverse order.  The base 64 digits are ".", "/", "0" to
       "9", "a" to "z", "A" to "Z" (in that order).

       Warning: The hash is small by modern standards, and the lack of salt is a weakness in this scheme.  For a scheme that makes better use of
       Blowfish see Authen::Passphrase::BlowfishCrypt.

CONSTRUCTOR

       Authen::Passphrase::EggdropBlowfish->new(ATTR => VALUE, ...)
	   Generates a new passphrase recogniser object using the Eggdrop blowfish.mod algorithm.  The following attributes may be given:

	   hash
	       The hash, as a string of eight bytes.

	   hash_base64
	       The hash, as a string of twelve base 64 digits.

	   passphrase
	       A passphrase that will be accepted.

	   Either the hash or the passphrase must be given.

METHODS

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

       $ppr->hash_base64
	   Returns the hash value, as a string of twelve base 64 digits.

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

SEE ALSO

       Authen::Passphrase, Crypt::Eksblowfish::Uklblowfish

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::EggdropBlowfish(3pm)

Check Out this Related Man Page

Authen::Passphrase::Clear(3pm)				User Contributed Perl Documentation			    Authen::Passphrase::Clear(3pm)

NAME

       Authen::Passphrase::Clear - cleartext passphrases

SYNOPSIS

	       use Authen::Passphrase::Clear;

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

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

	       $passphrase = $ppr->passphrase;

	       $userPassword = $ppr->as_rfc2307;

DESCRIPTION

       An object of this class is a passphrase recogniser that accepts some particular passphrase which it knows.  This is a subclass of
       Authen::Passphrase, and this document assumes that the reader is familiar with the documentation for that class.

       Warning: Storing a passphrase in cleartext, as this class does, is a very bad idea.  It means that anyone who sees the passphrase file
       immediately knows all the passphrases.  Do not use this unless you really know what you're doing.

CONSTRUCTORS

       Authen::Passphrase::Clear->new(PASSPHRASE)
	   Returns a passphrase recogniser object that stores the specified passphrase in cleartext and accepts only that passphrase.

       Authen::Passphrase::Clear->from_rfc2307(USERPASSWORD)
	   Generates a cleartext passphrase recogniser from the supplied RFC2307 encoding.  The string must consist of "{CLEARTEXT}" (case
	   insensitive) followed by the passphrase.

METHODS

       $ppr->match(PASSPHRASE)
       $ppr->passphrase
       $ppr->as_rfc2307
	   These methods are part of the standard Authen::Passphrase interface.  The "passphrase" method trivially works.

SEE ALSO

       Authen::Passphrase

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::Clear(3pm)
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