crypt.pm

这个社区是虚拟社区使用的程序

package Crypt;

=head1 NAME

B<Crypt> - software implementation of the C<crypt> function.

=head1 SYNOPSIS

C<use Crypt;>
C<$hashed = crypt($plaintext,$salt);>

=head1 DESCRIPTION

See the description of the C<crypt> function.

=head1 COPYRIGHT

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

=head1 AUTHORS

Written by Martin Vorlaender, [e-mail], 11-DEC-1997
Based upon Java source code written by [e-mail], which in turn is
based upon C source code written by Eric Young, [e-mail]

=cut

use Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(crypt);

#use strict;

my $ITERATIONS = 16;

my @con_salt =
(
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 
	0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 
	0x0A, 0x0B, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 
	0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 
	0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 
	0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 
	0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24, 
	0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 
	0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 
	0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 
	0x3D, 0x3E, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 
);

my @shifts2 =
(
	0, 0, 1, 1, 1, 1, 1, 1,
	0, 1, 1, 1, 1, 1, 1, 0
);

my @skb0 =
(
	# for C bits (numbered as per FIPS 46) 1 2 3 4 5 6
	0x00000000, 0x00000010, 0x20000000, 0x20000010, 
	0x00010000, 0x00010010, 0x20010000, 0x20010010, 
	0x00000800, 0x00000810, 0x20000800, 0x20000810, 
	0x00010800, 0x00010810, 0x20010800, 0x20010810, 
	0x00000020, 0x00000030, 0x20000020, 0x20000030, 
	0x00010020, 0x00010030, 0x20010020, 0x20010030, 
	0x00000820, 0x00000830, 0x20000820, 0x20000830, 
	0x00010820, 0x00010830, 0x20010820, 0x20010830, 
	0x00080000, 0x00080010, 0x20080000, 0x20080010, 
	0x00090000, 0x00090010, 0x20090000, 0x20090010, 
	0x00080800, 0x00080810, 0x20080800, 0x20080810, 
	0x00090800, 0x00090810, 0x20090800, 0x20090810, 
	0x00080020, 0x00080030, 0x20080020, 0x20080030, 
	0x00090020, 0x00090030, 0x20090020, 0x20090030, 
	0x00080820, 0x00080830, 0x20080820, 0x20080830, 
	0x00090820, 0x00090830, 0x20090820, 0x20090830, 
);
my @skb1 =
(
	# for C bits (numbered as per FIPS 46) 7 8 10 11 12 13
	0x00000000, 0x02000000, 0x00002000, 0x02002000, 
	0x00200000, 0x02200000, 0x00202000, 0x02202000, 
	0x00000004, 0x02000004, 0x00002004, 0x02002004, 
	0x00200004, 0x02200004, 0x00202004, 0x02202004, 
	0x00000400, 0x02000400, 0x00002400, 0x02002400, 
	0x00200400, 0x02200400, 0x00202400, 0x02202400, 
	0x00000404, 0x02000404, 0x00002404, 0x02002404, 
	0x00200404, 0x02200404, 0x00202404, 0x02202404, 
	0x10000000, 0x12000000, 0x10002000, 0x12002000, 
	0x10200000, 0x12200000, 0x10202000, 0x12202000, 
	0x10000004, 0x12000004, 0x10002004, 0x12002004, 
	0x10200004, 0x12200004, 0x10202004, 0x12202004, 
	0x10000400, 0x12000400, 0x10002400, 0x12002400, 
	0x10200400, 0x12200400, 0x10202400, 0x12202400, 
	0x10000404, 0x12000404, 0x10002404, 0x12002404, 
	0x10200404, 0x12200404, 0x10202404, 0x12202404, 
);
my @skb2 =
(
	# for C bits (numbered as per FIPS 46) 14 15 16 17 19 20
	0x00000000, 0x00000001, 0x00040000, 0x00040001, 
	0x01000000, 0x01000001, 0x01040000, 0x01040001, 
	0x00000002, 0x00000003, 0x00040002, 0x00040003, 
	0x01000002, 0x01000003, 0x01040002, 0x01040003, 
	0x00000200, 0x00000201, 0x00040200, 0x00040201, 
	0x01000200, 0x01000201, 0x01040200, 0x01040201, 
	0x00000202, 0x00000203, 0x00040202, 0x00040203, 
	0x01000202, 0x01000203, 0x01040202, 0x01040203, 
	0x08000000, 0x08000001, 0x08040000, 0x08040001, 
	0x09000000, 0x09000001, 0x09040000, 0x09040001, 
	0x08000002, 0x08000003, 0x08040002, 0x08040003, 
	0x09000002, 0x09000003, 0x09040002, 0x09040003, 
	0x08000200, 0x08000201, 0x08040200, 0x08040201, 
	0x09000200, 0x09000201, 0x09040200, 0x09040201, 
	0x08000202, 0x08000203, 0x08040202, 0x08040203, 
	0x09000202, 0x09000203, 0x09040202, 0x09040203, 
);
my @skb3 =
(
	# for C bits (numbered as per FIPS 46) 21 23 24 26 27 28
	0x00000000, 0x00100000, 0x00000100, 0x00100100, 
	0x00000008, 0x00100008, 0x00000108, 0x00100108, 
	0x00001000, 0x00101000, 0x00001100, 0x00101100, 
	0x00001008, 0x00101008, 0x00001108, 0x00101108, 
	0x04000000, 0x04100000, 0x04000100, 0x04100100, 
	0x04000008, 0x04100008, 0x04000108, 0x04100108, 
	0x04001000, 0x04101000, 0x04001100, 0x04101100, 
	0x04001008, 0x04101008, 0x04001108, 0x04101108, 
	0x00020000, 0x00120000, 0x00020100, 0x00120100, 
	0x00020008, 0x00120008, 0x00020108, 0x00120108, 
	0x00021000, 0x00121000, 0x00021100, 0x00121100, 
	0x00021008, 0x00121008, 0x00021108, 0x00121108, 
	0x04020000, 0x04120000, 0x04020100, 0x04120100, 
	0x04020008, 0x04120008, 0x04020108, 0x04120108, 
	0x04021000, 0x04121000, 0x04021100, 0x04121100, 
	0x04021008, 0x04121008, 0x04021108, 0x04121108, 
);
my @skb4 =
(
	# for D bits (numbered as per FIPS 46) 1 2 3 4 5 6
	0x00000000, 0x10000000, 0x00010000, 0x10010000, 
	0x00000004, 0x10000004, 0x00010004, 0x10010004, 
	0x20000000, 0x30000000, 0x20010000, 0x30010000, 
	0x20000004, 0x30000004, 0x20010004, 0x30010004, 
	0x00100000, 0x10100000, 0x00110000, 0x10110000, 
	0x00100004, 0x10100004, 0x00110004, 0x10110004, 
	0x20100000, 0x30100000, 0x20110000, 0x30110000, 
	0x20100004, 0x30100004, 0x20110004, 0x30110004, 
	0x00001000, 0x10001000, 0x00011000, 0x10011000, 
	0x00001004, 0x10001004, 0x00011004, 0x10011004, 
	0x20001000, 0x30001000, 0x20011000, 0x30011000, 
	0x20001004, 0x30001004, 0x20011004, 0x30011004, 
	0x00101000, 0x10101000, 0x00111000, 0x10111000, 
	0x00101004, 0x10101004, 0x00111004, 0x10111004, 
	0x20101000, 0x30101000, 0x20111000, 0x30111000, 
	0x20101004, 0x30101004, 0x20111004, 0x30111004, 
);
my @skb5 =
(
	# for D bits (numbered as per FIPS 46) 8 9 11 12 13 14
	0x00000000, 0x08000000, 0x00000008, 0x08000008, 
	0x00000400, 0x08000400, 0x00000408, 0x08000408, 
	0x00020000, 0x08020000, 0x00020008, 0x08020008, 
	0x00020400, 0x08020400, 0x00020408, 0x08020408, 
	0x00000001, 0x08000001, 0x00000009, 0x08000009, 
	0x00000401, 0x08000401, 0x00000409, 0x08000409, 
	0x00020001, 0x08020001, 0x00020009, 0x08020009, 
	0x00020401, 0x08020401, 0x00020409, 0x08020409, 
	0x02000000, 0x0A000000, 0x02000008, 0x0A000008, 
	0x02000400, 0x0A000400, 0x02000408, 0x0A000408, 
	0x02020000, 0x0A020000, 0x02020008, 0x0A020008, 
	0x02020400, 0x0A020400, 0x02020408, 0x0A020408, 
	0x02000001, 0x0A000001, 0x02000009, 0x0A000009, 
	0x02000401, 0x0A000401, 0x02000409, 0x0A000409, 
	0x02020001, 0x0A020001, 0x02020009, 0x0A020009, 
	0x02020401, 0x0A020401, 0x02020409, 0x0A020409, 
);
my @skb6 =
(
	# for D bits (numbered as per FIPS 46) 16 17 18 19 20 21
	0x00000000, 0x00000100, 0x00080000, 0x00080100, 
	0x01000000, 0x01000100, 0x01080000, 0x01080100, 
	0x00000010, 0x00000110, 0x00080010, 0x00080110, 
	0x01000010, 0x01000110, 0x01080010, 0x01080110, 
	0x00200000, 0x00200100, 0x00280000, 0x00280100, 
	0x01200000, 0x01200100, 0x01280000, 0x01280100, 
	0x00200010, 0x00200110, 0x00280010, 0x00280110, 
	0x01200010, 0x01200110, 0x01280010, 0x01280110, 
	0x00000200, 0x00000300, 0x00080200, 0x00080300, 
	0x01000200, 0x01000300, 0x01080200, 0x01080300, 
	0x00000210, 0x00000310, 0x00080210, 0x00080310, 
	0x01000210, 0x01000310, 0x01080210, 0x01080310, 
	0x00200200, 0x00200300, 0x00280200, 0x00280300, 
	0x01200200, 0x01200300, 0x01280200, 0x01280300, 
	0x00200210, 0x00200310, 0x00280210, 0x00280310, 
	0x01200210, 0x01200310, 0x01280210, 0x01280310, 
);
my @skb7 =
(
	# for D bits (numbered as per FIPS 46) 22 23 24 25 27 28
	0x00000000, 0x04000000, 0x00040000, 0x04040000, 
	0x00000002, 0x04000002, 0x00040002, 0x04040002, 
	0x00002000, 0x04002000, 0x00042000, 0x04042000, 
	0x00002002, 0x04002002, 0x00042002, 0x04042002, 
	0x00000020, 0x04000020, 0x00040020, 0x04040020, 
	0x00000022, 0x04000022, 0x00040022, 0x04040022, 
	0x00002020, 0x04002020, 0x00042020, 0x04042020, 
	0x00002022, 0x04002022, 0x00042022, 0x04042022, 
	0x00000800, 0x04000800, 0x00040800, 0x04040800, 
	0x00000802, 0x04000802, 0x00040802, 0x04040802, 
	0x00002800, 0x04002800, 0x00042800, 0x04042800, 
	0x00002802, 0x04002802, 0x00042802, 0x04042802, 
	0x00000820, 0x04000820, 0x00040820, 0x04040820, 
	0x00000822, 0x04000822, 0x00040822, 0x04040822, 
	0x00002820, 0x04002820, 0x00042820, 0x04042820, 
	0x00002822, 0x04002822, 0x00042822, 0x04042822, 
);

my @SPtrans0 =
(
	# nibble 0
	0x00820200, 0x00020000, 0x80800000, 0x80820200,
	0x00800000, 0x80020200, 0x80020000, 0x80800000,
	0x80020200, 0x00820200, 0x00820000, 0x80000200,
	0x80800200, 0x00800000, 0x00000000, 0x80020000,
	0x00020000, 0x80000000, 0x00800200, 0x00020200,
	0x80820200, 0x00820000, 0x80000200, 0x00800200,
	0x80000000, 0x00000200, 0x00020200, 0x80820000,
	0x00000200, 0x80800200, 0x80820000, 0x00000000,
	0x00000000, 0x80820200, 0x00800200, 0x80020000,
	0x00820200, 0x00020000, 0x80000200, 0x00800200,
	0x80820000, 0x00000200, 0x00020200, 0x80800000,
	0x80020200, 0x80000000, 0x80800000, 0x00820000,
	0x80820200, 0x00020200, 0x00820000, 0x80800200,
	0x00800000, 0x80000200, 0x80020000, 0x00000000,
	0x00020000, 0x00800000, 0x80800200, 0x00820200,
	0x80000000, 0x80820000, 0x00000200, 0x80020200,
);
my @SPtrans1 =
(
	# nibble 1
	0x10042004, 0x00000000, 0x00042000, 0x10040000,
	0x10000004, 0x00002004, 0x10002000, 0x00042000,
	0x00002000, 0x10040004, 0x00000004, 0x10002000,
	0x00040004, 0x10042000, 0x10040000, 0x00000004,
	0x00040000, 0x10002004, 0x10040004, 0x00002000,
	0x00042004, 0x10000000, 0x00000000, 0x00040004,
	0x10002004, 0x00042004, 0x10042000, 0x10000004,
	0x10000000, 0x00040000, 0x00002004, 0x10042004,
	0x00040004, 0x10042000, 0x10002000, 0x00042004,
	0x10042004, 0x00040004, 0x10000004, 0x00000000,
	0x10000000, 0x00002004, 0x00040000, 0x10040004,
	0x00002000, 0x10000000, 0x00042004, 0x10002004,
	0x10042000, 0x00002000, 0x00000000, 0x10000004,
	0x00000004, 0x10042004, 0x00042000, 0x10040000,
	0x10040004, 0x00040000, 0x00002004, 0x10002000,
	0x10002004, 0x00000004, 0x10040000, 0x00042000,
);
my @SPtrans2 =
(
	# nibble 2
	0x41000000, 0x01010040, 0x00000040, 0x41000040,
	0x40010000, 0x01000000, 0x41000040, 0x00010040,
	0x01000040, 0x00010000, 0x01010000, 0x40000000,
	0x41010040, 0x40000040, 0x40000000, 0x41010000,
	0x00000000, 0x40010000, 0x01010040, 0x00000040,
	0x40000040, 0x41010040, 0x00010000, 0x41000000,
	0x41010000, 0x01000040, 0x40010040, 0x01010000,
	0x00010040, 0x00000000, 0x01000000, 0x40010040,
	0x01010040, 0x00000040, 0x40000000, 0x00010000,
	0x40000040, 0x40010000, 0x01010000, 0x41000040,
	0x00000000, 0x01010040, 0x00010040, 0x41010000,
	0x40010000, 0x01000000, 0x41010040, 0x40000000,
	0x40010040, 0x41000000, 0x01000000, 0x41010040,
	0x00010000, 0x01000040, 0x41000040, 0x00010040,
	0x01000040, 0x00000000, 0x41010000, 0x40000040,
	0x41000000, 0x40010040, 0x00000040, 0x01010000,
);
my @SPtrans3 =
(
	# nibble 3
	0x00100402, 0x04000400, 0x00000002, 0x04100402,
	0x00000000, 0x04100000, 0x04000402, 0x00100002,
	0x04100400, 0x04000002, 0x04000000, 0x00000402,
	0x04000002, 0x00100402, 0x00100000, 0x04000000,
	0x04100002, 0x00100400, 0x00000400, 0x00000002,
	0x00100400, 0x04000402, 0x04100000, 0x00000400,
	0x00000402, 0x00000000, 0x00100002, 0x04100400,
	0x04000400, 0x04100002, 0x04100402, 0x00100000,
	0x04100002, 0x00000402, 0x00100000, 0x04000002,
	0x00100400, 0x04000400, 0x00000002, 0x04100000,
	0x04000402, 0x00000000, 0x00000400, 0x00100002,
	0x00000000, 0x04100002, 0x04100400, 0x00000400,
	0x04000000, 0x04100402, 0x00100402, 0x00100000,
	0x04100402, 0x00000002, 0x04000400, 0x00100402,
	0x00100002, 0x00100400, 0x04100000, 0x04000402,
	0x00000402, 0x04000000, 0x04000002, 0x04100400,
);
my @SPtrans4 =
(
	# nibble 4
	0x02000000, 0x00004000, 0x00000100, 0x02004108,
	0x02004008, 0x02000100, 0x00004108, 0x02004000,
	0x00004000, 0x00000008, 0x02000008, 0x00004100,
	0x02000108, 0x02004008, 0x02004100, 0x00000000,
	0x00004100, 0x02000000, 0x00004008, 0x00000108,
	0x02000100, 0x00004108, 0x00000000, 0x02000008,
	0x00000008, 0x02000108, 0x02004108, 0x00004008,
	0x02004000, 0x00000100, 0x00000108, 0x02004100,
	0x02004100, 0x02000108, 0x00004008, 0x02004000,
	0x00004000, 0x00000008, 0x02000008, 0x02000100,
	0x02000000, 0x00004100, 0x02004108, 0x00000000,
	0x00004108, 0x02000000, 0x00000100, 0x00004008,
	0x02000108, 0x00000100, 0x00000000, 0x02004108,
	0x02004008, 0x02004100, 0x00000108, 0x00004000,
	0x00004100, 0x02004008, 0x02000100, 0x00000108,
	0x00000008, 0x00004108, 0x02004000, 0x02000008,
);
my @SPtrans5 =
(
	# nibble 5
	0x20000010, 0x00080010, 0x00000000, 0x20080800,
	0x00080010, 0x00000800, 0x20000810, 0x00080000,
	0x00000810, 0x20080810, 0x00080800, 0x20000000,
	0x20000800, 0x20000010, 0x20080000, 0x00080810,
	0x00080000, 0x20000810, 0x20080010, 0x00000000,
	0x00000800, 0x00000010, 0x20080800, 0x20080010,
	0x20080810, 0x20080000, 0x20000000, 0x00000810,
	0x00000010, 0x00080800, 0x00080810, 0x20000800,
	0x00000810, 0x20000000, 0x20000800, 0x00080810,
	0x20080800, 0x00080010, 0x00000000, 0x20000800,
	0x20000000, 0x00000800, 0x20080010, 0x00080000,
	0x00080010, 0x20080810, 0x00080800, 0x00000010,
	0x20080810, 0x00080800, 0x00080000, 0x20000810,
	0x20000010, 0x20080000, 0x00080810, 0x00000000,
	0x00000800, 0x20000010, 0x20000810, 0x20080800,
	0x20080000, 0x00000810, 0x00000010, 0x20080010,
);
my @SPtrans6 =
(
	# nibble 6
	0x00001000, 0x00000080, 0x00400080, 0x00400001,