Digest-Bcrypt-1.0.1/000755 000765 000024 00000000000 11737734315 014446 5ustar00jamesstaff000000 000000 Digest-Bcrypt-1.0.1/CHANGES000644 000765 000024 00000002143 11737734315 015441 0ustar00jamesstaff000000 000000 1.0.1 2012-04-07 [ BUGFIX ] * $VERSION was not incremented in previous release. 1.0.0 2012-04-07 [ BUGFIX ] * Remove accidental dependency on perl 5.10 introduced in previous revision [ FEATURE ] * bcrypt_b64digest method added to return digest base64 encoded using the base 64 alphabet commonly used with bcrypt * b64digest method now returns a base64 that is compatible with the standard MIME alphabet. To access the version of base64 commonly used with bcrypt, use the new bcrypt_b64digest method This is a backwards incompatible change [ TESTS ] * Added additional tests for new methods 0.1.1 2012-04-05 [ DOCUMENTATION ] * Fixed typos in base64 method description [ FEATURE ] * Improved handling of cases where the cost / salt methods have never been called [ TESTS ] * Improved error handling tests 0.1.0 2012-03-31 ** First Public Release ** [ DOCUMENTATION ] * Added Documentation [ TESTS ] * Added Test Suite 0.0.1 2011-03-30 ** First Draft ** Digest-Bcrypt-1.0.1/lib/000755 000765 000024 00000000000 11737734315 015214 5ustar00jamesstaff000000 000000 Digest-Bcrypt-1.0.1/LICENSE000644 000765 000024 00000043653 11737734315 015466 0ustar00jamesstaff000000 000000 This software is copyright (c) 2012 by James Aitken. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. Terms of the Perl programming language system itself a) the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version, or b) the "Artistic License" --- The GNU General Public License, Version 1, February 1989 --- This software is Copyright (c) 2012 by James Aitken. This is free software, licensed under: The GNU General Public License, Version 1, February 1989 GNU GENERAL PUBLIC LICENSE Version 1, February 1989 Copyright (C) 1989 Free Software Foundation, Inc. 51 Franklin St, Suite 500, Boston, MA 02110-1335 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The license agreements of most software companies try to keep users at the mercy of those companies. By contrast, our General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. 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This License Agreement applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any work containing the Program or a portion of it, either verbatim or with modifications. Each licensee is addressed as "you". 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this General Public License and to the absence of any warranty; and give any other recipients of the Program a copy of this General Public License along with the Program. You may charge a fee for the physical act of transferring a copy. 2. 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Here a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (a program to direct compilers to make passes at assemblers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice That's all there is to it! --- The Artistic License 1.0 --- This software is Copyright (c) 2012 by James Aitken. This is free software, licensed under: The Artistic License 1.0 The Artistic License Preamble The intent of this document is to state the conditions under which a Package may be copied, such that the Copyright Holder maintains some semblance of artistic control over the development of the package, while giving the users of the package the right to use and distribute the Package in a more-or-less customary fashion, plus the right to make reasonable modifications. 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However, you may distribute this Package in aggregate with other (possibly commercial) programs as part of a larger (possibly commercial) software distribution provided that you do not advertise this Package as a product of your own. 6. The scripts and library files supplied as input to or produced as output from the programs of this Package do not automatically fall under the copyright of this Package, but belong to whomever generated them, and may be sold commercially, and may be aggregated with this Package. 7. C or perl subroutines supplied by you and linked into this Package shall not be considered part of this Package. 8. The name of the Copyright Holder may not be used to endorse or promote products derived from this software without specific prior written permission. 9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. The End Digest-Bcrypt-1.0.1/Makefile.PL000644 000765 000024 00000002246 11737734315 016424 0ustar00jamesstaff000000 000000 use strict; use warnings; use 5.006; use ExtUtils::MakeMaker 6.30; my %WriteMakefileArgs = ( "ABSTRACT" => "Perl interface to the bcrypt digest algorithm", "AUTHOR" => "James Aitken ", "BUILD_REQUIRES" => { "Digest" => 0, "Test::More" => 0, "warnings" => 0 }, "CONFIGURE_REQUIRES" => { "ExtUtils::MakeMaker" => "6.30" }, "DISTNAME" => "Digest-Bcrypt", "EXE_FILES" => [], "LICENSE" => "perl", "NAME" => "Digest::Bcrypt", "PREREQ_PM" => { "Carp" => 0, "Crypt::Eksblowfish::Bcrypt" => 0, "Digest::base" => 0, "bytes" => 0, "parent" => 0, "strict" => 0 }, "VERSION" => "1.0.1", "test" => { "TESTS" => "t/*.t" } ); unless ( eval { ExtUtils::MakeMaker->VERSION(6.56) } ) { my $br = delete $WriteMakefileArgs{BUILD_REQUIRES}; my $pp = $WriteMakefileArgs{PREREQ_PM}; for my $mod ( keys %$br ) { if ( exists $pp->{$mod} ) { $pp->{$mod} = $br->{$mod} if $br->{$mod} > $pp->{$mod}; } else { $pp->{$mod} = $br->{$mod}; } } } delete $WriteMakefileArgs{CONFIGURE_REQUIRES} unless eval { ExtUtils::MakeMaker->VERSION(6.52) }; WriteMakefile(%WriteMakefileArgs); Digest-Bcrypt-1.0.1/MANIFEST000644 000765 000024 00000000241 11737734315 015574 0ustar00jamesstaff000000 000000 CHANGES LICENSE MANIFEST META.json META.yml Makefile.PL README lib/Digest/Bcrypt.pm t/001_basics.t t/002_methods.t t/003_create_digests.t t/004_error_handling.t Digest-Bcrypt-1.0.1/META.json000644 000765 000024 00000002526 11737734315 016074 0ustar00jamesstaff000000 000000 { "abstract" : "Perl interface to the bcrypt digest algorithm", "author" : [ "James Aitken " ], "dynamic_config" : 0, "generated_by" : "Dist::Zilla version 4.300014, CPAN::Meta::Converter version 2.120921", "license" : [ "perl_5" ], "meta-spec" : { "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec", "version" : "2" }, "name" : "Digest-Bcrypt", "prereqs" : { "configure" : { "requires" : { "ExtUtils::MakeMaker" : "6.30" } }, "runtime" : { "requires" : { "Carp" : "0", "Crypt::Eksblowfish::Bcrypt" : "0", "Digest::base" : "0", "bytes" : "0", "parent" : "0", "perl" : "5.006", "strict" : "0" } }, "test" : { "requires" : { "Digest" : "0", "Test::More" : "0", "warnings" : "0" } } }, "release_status" : "stable", "resources" : { "bugtracker" : { "web" : "https://github.com/LoonyPandora/Digest-Bcrypt/issues" }, "repository" : { "type" : "git", "url" : "git://github.com/LoonyPandora/Digest-Bcrypt.git", "web" : "https://github.com/LoonyPandora/Digest-Bcrypt" } }, "version" : "1.0.1" } Digest-Bcrypt-1.0.1/META.yml000644 000765 000024 00000001312 11737734315 015714 0ustar00jamesstaff000000 000000 --- abstract: 'Perl interface to the bcrypt digest algorithm' author: - 'James Aitken ' build_requires: Digest: 0 Test::More: 0 warnings: 0 configure_requires: ExtUtils::MakeMaker: 6.30 dynamic_config: 0 generated_by: 'Dist::Zilla version 4.300014, CPAN::Meta::Converter version 2.120921' license: perl meta-spec: url: http://module-build.sourceforge.net/META-spec-v1.4.html version: 1.4 name: Digest-Bcrypt requires: Carp: 0 Crypt::Eksblowfish::Bcrypt: 0 Digest::base: 0 bytes: 0 parent: 0 perl: 5.006 strict: 0 resources: bugtracker: https://github.com/LoonyPandora/Digest-Bcrypt/issues repository: git://github.com/LoonyPandora/Digest-Bcrypt.git version: 1.0.1 Digest-Bcrypt-1.0.1/README000644 000765 000024 00000010512 11737734315 015325 0ustar00jamesstaff000000 000000 # NAME Digest::Bcrypt - Perl interface to the bcrypt digest algorithm # SYNOPSIS Provides an interface to the bcrypt digest algorithm. This module subclasses [Digest::base](http://search.cpan.org/perldoc?Digest::base) and can be used either directly or through the Digest meta-module. Using the latter is recommended. It is mostly a wrapper around [Crypt::Eksblowfish::Bcrypt](http://search.cpan.org/perldoc?Crypt::Eksblowfish::Bcrypt). # USAGE # via the Digest module (recommended) use Digest; my $bcrypt = Digest->new('Bcrypt'); # $cost is an integer between 1 and 31 $bcrypt->cost($cost); # $salt must be exactly 16 octets long $bcrypt->salt($salt); $bcrypt->add($data); $digest = $bcrypt->digest; $digest = $bcrypt->hexdigest; $digest = $bcrypt->b64digest; # bcrypt's own non-standard base64 dictionary $digest = $bcrypt->bcrypt_b64digest; # [...] # Using the module directly (same interface as above) use Digest::Bcrypt; my $bcrypt = Digest::Bcrypt->new(); # METHODS The object-oriented interface to `Digest::Bcrypt` is mostly identical to that of [Digest](http://search.cpan.org/perldoc?Digest), with a few additions. Notably you __must__ set a `salt` exactly 16 octets in length, and you __must__ provide a `cost` in the range `'1'..'31'`. ## new my $bcrypt = Digest->new('Bcrypt'); Creates a new `Digest::Bcrypt` object. You can also use this module directly my $bcrypt = Digest::Bcrypt->new(); ## add $bcrypt->add("a"); $bcrypt->add("b"); $bcrypt->add("c"); $bcrypt->add("a")->add("b")->add("c"); $bcrypt->add("a", "b", "c"); $bcrypt->add("abc"); Adds data to the message we are calculating the digest for. All the above examples have the same effect ## salt $bcrypt->salt($salt); Sets the value to be used as a salt. Bcrypt requires __exactly__ 16 octets of salt It is recommenced that you use a module like [Data::Entropy::Algorithms](http://search.cpan.org/perldoc?Data::Entropy::Algorithms) to provide a truly randomised salt. When called with no arguments, will return the whatever is the current salt ## cost $bcrypt->cost($cost); An integer in the range `'1'..'31'`, this is required. See [Crypt::Eksblowfish::Bcrypt](http://search.cpan.org/perldoc?Crypt::Eksblowfish::Bcrypt) for a detailed description of `cost` in the context of the bcrypt algorithm. When called with no arguments, will return the current cost ## digest $bcrypt->digest; Return the binary digest for the message. The returned string will be 23 bytes long. ## hexdigest $bcrypt->hexdigest; Same as ["digest"](#digest), but will return the digest in hexadecimal form. The `length` of the returned string will be 46 and will only contain characters from the ranges `'0'..'9'` and `'a'..'f'`. ## b64digest $bcrypt->b64digest; Same as ["digest"](#digest), but will return the digest base64 encoded. The `length` of the returned string will be 31 and will only contain characters from the ranges `'0'..'9'`, `'A'..'Z'`, `'a'..'z'`, `'+'`, and `'/'` The base64 encoded string returned is not padded to be a multiple of 4 bytes long. ## bcrypt_b64digest $bcrypt->bcrypt_b64digest; Same as ["digest"](#digest), but will return the digest base64 encoded using the alphabet that is commonly used with bcrypt. The `length` of the returned string will be 31 and will only contain characters from the ranges `'0'..'9'`, `'A'..'Z'`, `'a'..'z'`, `'+'`, and `'.'` The base64 encoded string returned is not padded to be a multiple of 4 bytes long. _Note:_ This is bcrypt's own non-standard base64 alphabet, It is __not__ compatible with the standard MIME base64 encoding. ## clone my $bcrypt->clone; Creates a clone of the `Digest::Bcrypt` object, and returns it. ## reset $bcrypt->reset; Resets the object to the same internal state it was in when it was constructed. # SEE ALSO [Digest](http://search.cpan.org/perldoc?Digest), [Crypt::Eksblowfish::Bcrypt](http://search.cpan.org/perldoc?Crypt::Eksblowfish::Bcrypt), [Data::Entropy::Algorithms](http://search.cpan.org/perldoc?Data::Entropy::Algorithms) # AUTHOR James Aitken # COPYRIGHT AND LICENSE This software is copyright (c) 2012 by James Aitken. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.Digest-Bcrypt-1.0.1/t/000755 000765 000024 00000000000 11737734315 014711 5ustar00jamesstaff000000 000000 Digest-Bcrypt-1.0.1/t/001_basics.t000644 000765 000024 00000000141 11737734315 016716 0ustar00jamesstaff000000 000000 use Test::More tests => 2; use strict; use warnings; use_ok 'Digest'; use_ok 'Digest::Bcrypt'; Digest-Bcrypt-1.0.1/t/002_methods.t000644 000765 000024 00000003056 11737734315 017126 0ustar00jamesstaff000000 000000 use Test::More tests => 12; use strict; use warnings; use Digest; use Digest::Bcrypt; my $secret = "Super Secret Squirrel"; my $salt = " known salt "; my $cost = 1; my $direct = Digest::Bcrypt->new; can_ok($direct, qw/new clone add digest hexdigest b64digest bcrypt_b64digest salt reset/); $direct->add($secret); $direct->salt($salt); $direct->cost($cost); ok($direct->salt eq $salt, "Reads salt correctly"); ok($direct->cost == $cost, "Reads cost correctly"); my $direct_clone = $direct->clone; $direct_clone->salt(' unknown salt '); $direct_clone->cost('2'); ok($direct->salt ne $direct_clone->salt, "Cloned object has different salt"); ok($direct->cost != $direct_clone->cost, "Cloned object has different cost"); ok($direct->hexdigest ne $direct_clone->hexdigest, "Cloned object produces different hash"); my $indirect = Digest->new('Bcrypt'); can_ok($indirect, qw/new clone add digest hexdigest b64digest bcrypt_b64digest salt reset/); $indirect->add($secret); $indirect->salt($salt); $indirect->cost($cost); ok($indirect->salt eq $salt, "Indirect object reads salt correctly"); ok($indirect->cost == $cost, "Indirect object reads cost correctly"); my $indirect_clone = $indirect->clone; $indirect_clone->salt(' unknown salt '); $indirect_clone->cost('2'); ok($indirect->salt ne $indirect_clone->salt, "Indirect cloned object has different salt"); ok($indirect->cost != $indirect_clone->cost, "Indirect cloned object has different cost"); ok($indirect->hexdigest ne $indirect_clone->hexdigest, "Indirect cloned object produces different hash"); Digest-Bcrypt-1.0.1/t/003_create_digests.t000644 000765 000024 00000003144 11737734315 020447 0ustar00jamesstaff000000 000000 use Test::More tests => 8; use strict; use warnings; use Digest; use Digest::Bcrypt; my $secret = "Super Secret Squirrel"; my $salt = " known salt "; my $cost = 1; # Object is reset after each hash is generated my $direct = Digest::Bcrypt->new; $direct->add($secret); $direct->salt($salt); $direct->cost($cost); ok($direct->digest, "Creates Binary Digest"); $direct->add($secret); $direct->salt($salt); $direct->cost($cost); ok($direct->hexdigest eq '7ca73fd67f694324bcad7b0910093ff8ef9e8c564e2297', "Creates Hex Digest"); $direct->add($secret); $direct->salt($salt); $direct->cost($cost); ok($direct->b64digest eq 'fKc/1n9pQyS8rXsJEAk/+O+ejFZOIpc', "Creates Base 64 Digest"); $direct->add($secret); $direct->salt($salt); $direct->cost($cost); ok($direct->bcrypt_b64digest eq 'dIa9zl7nOwQ6pVqHC.i98M8chDXMGna', "Creates Bcrypt Base 64 Digest"); # Object is reset after each hash is generated my $indirect = Digest->new('Bcrypt'); $indirect->add($secret); $indirect->salt($salt); $indirect->cost($cost); ok($indirect->digest, "Creates Indirect Binary Digest"); $indirect->add($secret); $indirect->salt($salt); $indirect->cost($cost); ok($indirect->hexdigest eq '7ca73fd67f694324bcad7b0910093ff8ef9e8c564e2297', "Creates Indirect Hex Digest"); $indirect->add($secret); $indirect->salt($salt); $indirect->cost($cost); ok($indirect->b64digest eq 'fKc/1n9pQyS8rXsJEAk/+O+ejFZOIpc', "Creates Indirect Base 64 Digest"); $indirect->add($secret); $indirect->salt($salt); $indirect->cost($cost); ok($indirect->bcrypt_b64digest eq 'dIa9zl7nOwQ6pVqHC.i98M8chDXMGna', "Creates Indirect Bcrypt Base 64 Digest"); Digest-Bcrypt-1.0.1/t/004_error_handling.t000644 000765 000024 00000002623 11737734315 020461 0ustar00jamesstaff000000 000000 use Test::More tests => 6; use strict; use warnings; use Digest::Bcrypt; my $secret = "Super Secret Squirrel"; my $salt = " known salt "; my $cost = 1; eval { my $ctx = Digest::Bcrypt->new; $ctx->add($secret); $ctx->salt($salt); $ctx->cost('foobar'); $ctx->digest; }; like $@, qr/Cost must be an integer between 1 and 31/i, 'Dies on non-numeric cost'; eval { my $ctx = Digest::Bcrypt->new; $ctx->add($secret); $ctx->salt($salt); $ctx->cost(32); $ctx->digest; }; like $@, qr/Cost must be an integer between 1 and 31/i, 'Dies on too large a cost'; eval { my $ctx = Digest::Bcrypt->new; $ctx->add($secret); $ctx->salt($salt); $ctx->cost(-1); $ctx->digest; }; like $@, qr/Cost must be an integer between 1 and 31/i, 'Dies on too small a cost'; eval { my $ctx = Digest::Bcrypt->new; $ctx->add($secret); $ctx->digest; }; like $@, qr/Cost must be an integer between 1 and 31/i, 'Dies when no cost specified'; eval { my $ctx = Digest::Bcrypt->new; $ctx->add($secret); $ctx->salt('too small'); $ctx->cost($cost); $ctx->digest; }; like $@, qr/Salt must be exactly 16 octets long/i, 'Dies on incorrect amount of salt'; eval { my $ctx = Digest::Bcrypt->new; $ctx->add($secret); $ctx->cost($cost); $ctx->digest; }; like $@, qr/Salt must be exactly 16 octets long/i, 'Dies when no salt specified'; Digest-Bcrypt-1.0.1/lib/Digest/000755 000765 000024 00000000000 11737734315 016433 5ustar00jamesstaff000000 000000 Digest-Bcrypt-1.0.1/lib/Digest/Bcrypt.pm000644 000765 000024 00000014536 11737734315 020245 0ustar00jamesstaff000000 000000 package Digest::Bcrypt; # ABSTRACT: Perl interface to the bcrypt digest algorithm =head1 NAME Digest::Bcrypt - Perl interface to the bcrypt digest algorithm =head1 SYNOPSIS Provides an interface to the bcrypt digest algorithm. This module subclasses L and can be used either directly or through the Digest meta-module. Using the latter is recommended. It is mostly a wrapper around L. =head1 USAGE # via the Digest module (recommended) use Digest; my $bcrypt = Digest->new('Bcrypt'); # $cost is an integer between 1 and 31 $bcrypt->cost($cost); # $salt must be exactly 16 octets long $bcrypt->salt($salt); $bcrypt->add($data); $digest = $bcrypt->digest; $digest = $bcrypt->hexdigest; $digest = $bcrypt->b64digest; # bcrypt's own non-standard base64 dictionary $digest = $bcrypt->bcrypt_b64digest; # [...] # Using the module directly (same interface as above) use Digest::Bcrypt; my $bcrypt = Digest::Bcrypt->new(); =cut use strict; use parent 'Digest::base'; use Carp qw(croak); use Crypt::Eksblowfish::Bcrypt qw(bcrypt_hash en_base64); our $VERSION = '1.0.1'; =head1 METHODS The object-oriented interface to C is mostly identical to that of L, with a few additions. Notably you B set a C exactly 16 octets in length, and you B provide a C in the range C<'1'..'31'>. =head2 new my $bcrypt = Digest->new('Bcrypt'); Creates a new C object. You can also use this module directly my $bcrypt = Digest::Bcrypt->new(); =cut sub new { my $class = shift; return bless { _buffer => '', }, ref($class) || $class; } =head2 add $bcrypt->add("a"); $bcrypt->add("b"); $bcrypt->add("c"); $bcrypt->add("a")->add("b")->add("c"); $bcrypt->add("a", "b", "c"); $bcrypt->add("abc"); Adds data to the message we are calculating the digest for. All the above examples have the same effect =cut sub add { my $self = shift; $self->{_buffer} .= join('', @_); return $self; } =head2 salt $bcrypt->salt($salt); Sets the value to be used as a salt. Bcrypt requires B 16 octets of salt It is recommenced that you use a module like L to provide a truly randomised salt. When called with no arguments, will return the whatever is the current salt =cut sub salt { my ($self, $salt) = @_; if (defined $salt) { $self->_check_salt($salt); $self->{salt} = $salt; return $self; } return $self->{salt}; } =head2 cost $bcrypt->cost($cost); An integer in the range C<'1'..'31'>, this is required. See L for a detailed description of C in the context of the bcrypt algorithm. When called with no arguments, will return the current cost =cut sub cost { my ($self, $cost) = @_; if (defined $cost) { $self->_check_cost($cost); # bcrypt requires 2 digit costs, it dies if it's a single digit. $self->{cost} = sprintf("%02d", $cost); return $self; } return $self->{cost}; } =head2 digest $bcrypt->digest; Return the binary digest for the message. The returned string will be 23 bytes long. =cut sub digest { my $self = shift; return $self->_digest; } =head2 hexdigest $bcrypt->hexdigest; Same as L, but will return the digest in hexadecimal form. The C of the returned string will be 46 and will only contain characters from the ranges C<'0'..'9'> and C<'a'..'f'>. =cut =head2 b64digest $bcrypt->b64digest; Same as L, but will return the digest base64 encoded. The C of the returned string will be 31 and will only contain characters from the ranges C<'0'..'9'>, C<'A'..'Z'>, C<'a'..'z'>, C<'+'>, and C<'/'> The base64 encoded string returned is not padded to be a multiple of 4 bytes long. =cut =head2 bcrypt_b64digest $bcrypt->bcrypt_b64digest; Same as L, but will return the digest base64 encoded using the alphabet that is commonly used with bcrypt. The C of the returned string will be 31 and will only contain characters from the ranges C<'0'..'9'>, C<'A'..'Z'>, C<'a'..'z'>, C<'+'>, and C<'.'> The base64 encoded string returned is not padded to be a multiple of 4 bytes long. I This is bcrypt's own non-standard base64 alphabet, It is B compatible with the standard MIME base64 encoding. =cut sub bcrypt_b64digest { my $self = shift; return en_base64($self->_digest); } =head2 clone my $bcrypt->clone; Creates a clone of the C object, and returns it. =cut sub clone { my $self = shift; return bless { cost => $self->cost, salt => $self->salt, _buffer => $self->{_buffer}, }, ref($self); } =head2 reset $bcrypt->reset; Resets the object to the same internal state it was in when it was constructed. =cut sub reset { my $self = shift; delete $self->{_buffer}; delete $self->{cost}; delete $self->{salt}; return $self->new; } # Returns the raw bcrypt digest and resets the object sub _digest { my $self = shift; $self->_check_cost; $self->_check_salt; my $hash = bcrypt_hash({ key_nul => 1, cost => $self->cost, salt => $self->salt, }, $self->{_buffer}); $self->reset; return $hash; } # Checks that the cost is an integer in the range 1-31. Croaks if it isn't sub _check_cost { my ($self, $cost) = @_; $cost = defined $cost ? $cost : $self->cost; if (!defined $cost || $cost !~ /^\d+$/ || ($cost < 1 || $cost > 31)) { croak "Cost must be an integer between 1 and 31"; } } # Checks that the salt exactly 16 octets long. Croaks if it isn't sub _check_salt { my ($self, $salt) = @_; $salt = defined $salt ? $salt : $self->salt; use bytes; if (!defined $salt || length $salt != 16) { croak "Salt must be exactly 16 octets long"; } no bytes; } 1; =head1 SEE ALSO L, L, L =head1 AUTHOR James Aitken =head1 COPYRIGHT AND LICENSE This software is copyright (c) 2012 by James Aitken. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. =cut