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374 lines
10 KiB
ObjectPascal
374 lines
10 KiB
ObjectPascal
{
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This file is part of the Free Pascal packages.
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Copyright (c) 1999-2006 by the Free Pascal development team
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Implements a NTLM password hash algorithm.
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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unit ntlm;
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{$mode objfpc}
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interface
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uses
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Math, Strings, md5;
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function LMGenerate(const Password: PChar): TMDDigest;
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function NTGenerate(const Password: PChar): TMDDigest;
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implementation
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const
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perm1: array[0..55] of Byte = (
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57, 49, 41, 33, 25, 17, 9,
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1, 58, 50, 42, 34, 26, 18,
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10, 2, 59, 51, 43, 35, 27,
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19, 11, 3, 60, 52, 44, 36,
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63, 55, 47, 39, 31, 23, 15,
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7, 62, 54, 46, 38, 30, 22,
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14, 6, 61, 53, 45, 37, 29,
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21, 13, 5, 28, 20, 12, 4);
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perm2: array[0..47] of Byte = (
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14, 17, 11, 24, 1, 5,
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3, 28, 15, 6, 21, 10,
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23, 19, 12, 4, 26, 8,
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16, 7, 27, 20, 13, 2,
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41, 52, 31, 37, 47, 55,
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30, 40, 51, 45, 33, 48,
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44, 49, 39, 56, 34, 53,
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46, 42, 50, 36, 29, 32);
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perm3: array[0..63] of Byte = (
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58, 50, 42, 34, 26, 18, 10, 2,
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60, 52, 44, 36, 28, 20, 12, 4,
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62, 54, 46, 38, 30, 22, 14, 6,
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64, 56, 48, 40, 32, 24, 16, 8,
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57, 49, 41, 33, 25, 17, 9, 1,
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59, 51, 43, 35, 27, 19, 11, 3,
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61, 53, 45, 37, 29, 21, 13, 5,
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63, 55, 47, 39, 31, 23, 15, 7);
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perm4: array[0..47] of Byte = (
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32, 1, 2, 3, 4, 5,
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4, 5, 6, 7, 8, 9,
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8, 9, 10, 11, 12, 13,
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12, 13, 14, 15, 16, 17,
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16, 17, 18, 19, 20, 21,
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20, 21, 22, 23, 24, 25,
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24, 25, 26, 27, 28, 29,
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28, 29, 30, 31, 32, 1);
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perm5: array[0..31] of Byte = (
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16, 7, 20, 21,
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29, 12, 28, 17,
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1, 15, 23, 26,
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5, 18, 31, 10,
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2, 8, 24, 14,
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32, 27, 3, 9,
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19, 13, 30, 6,
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22, 11, 4, 25);
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perm6: array[0..63] of Byte = (
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40, 8, 48, 16, 56, 24, 64, 32,
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39, 7, 47, 15, 55, 23, 63, 31,
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38, 6, 46, 14, 54, 22, 62, 30,
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37, 5, 45, 13, 53, 21, 61, 29,
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36, 4, 44, 12, 52, 20, 60, 28,
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35, 3, 43, 11, 51, 19, 59, 27,
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34, 2, 42, 10, 50, 18, 58, 26,
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33, 1, 41, 9, 49, 17, 57, 25);
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sc: array[0..15] of Byte = (1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1);
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sbox: array[0..7, 0..3, 0..15] of Byte = (
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((14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7),
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(0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8),
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(4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0),
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(15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13)),
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((15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10),
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(3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5),
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(0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15),
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(13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9)),
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((10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8),
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(13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1),
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(13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7),
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(1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12)),
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((7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15),
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(13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9),
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(10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4),
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(3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14)),
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((2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9),
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(14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6),
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(4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14),
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(11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3)),
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((12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11),
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(10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8),
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(9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6),
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(4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13)),
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((4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1),
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(13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6),
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(1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2),
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(6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12)),
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((13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7),
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(1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2),
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(7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8),
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(2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11)));
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procedure permute({out} const _out: PByte; {in} const _in: PByte; {in} const p: PByte; {in} const n: Integer);
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var
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i: Integer;
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begin
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for i := 0 to n-1 do
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_out[i] := _in[p[i]-1];
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end;
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procedure lshift({in/out} const d: PByte; {in} const count: Integer; {in} const n: Integer);
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var
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_out : array[0..63] of Byte;
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i : Integer;
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begin
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for i := 0 to n-1 do
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_out[i] := d[(i+count) mod n];
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for i := 0 to n-1 do
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d[i] := _out[i];
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end;
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procedure concat({out} const _out: PByte; {in} const _in1, _in2: PByte; {in} const l1, l2: Integer);
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var
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i: Integer;
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begin
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for i := 0 to l1-1 do
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_out[i] := _in1[i];
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for i := 0 to l2-1 do
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_out[i+l1] := _in2[i];
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end;
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procedure mxor({out} const _out: PByte; {in} const _in1, _in2: PByte; {in} const n: Integer);
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var
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i: Integer;
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begin
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for i := 0 to n-1 do
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_out[i] := _in1[i] xor _in2[i];
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end;
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procedure dohash({out} const _out: PByte; {in} const _in: PByte; {in} const key: PByte; {in} const forw: Boolean);
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var
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i : Integer;
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j : Integer;
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k : Integer;
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pk1 : array[0..55] of Byte;
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c : array[0..27] of Byte;
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d : array[0..27] of Byte;
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cd : array[0..55] of Byte;
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ki : array[0..15,0..47] of Byte;
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pd1 : array[0..63] of Byte;
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l : array[0..31] of Byte;
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r : array[0..31] of Byte;
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rl : array[0..63] of Byte;
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er : array[0..47] of Byte;
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erk : array[0..47] of Byte;
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b : array[0..7,0..5] of Byte;
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cb : array[0..31] of Byte;
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pcb : array[0..31] of Byte;
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r2 : array[0..31] of Byte;
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m : Integer;
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n : Integer;
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begin
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permute(@pk1[0], key, @perm1[0], 56);
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for i := 0 to 27 do
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begin
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c[i] := pk1[i];
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d[i] := pk1[i+28];
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end;
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for i := 0 to 15 do
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begin
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lshift(@c[0], sc[i], 28);
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lshift(@d[0], sc[i], 28);
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concat(@cd[0], @c[0], @d[0], 28, 28);
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permute(@ki[i][0], @cd[0], @perm2[0], 48);
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end;
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permute(@pd1[0], _in, @perm3[0], 64);
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for i := 0 to 31 do
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begin
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l[i] := pd1[i];
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r[i] := pd1[i+32];
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end;
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for i := 0 to 15 do
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begin
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permute(@er[0], @r[0], @perm4[0], 48);
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if forw then
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mxor(@erk[0], @er[0], @ki[i][0], 48) else
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mxor(@erk[0], @er[0], @ki[15-i][0], 48);
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for j := 0 to 7 do
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for k := 0 to 5 do
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b[j][k] := erk[j*6 + k];
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for j := 0 to 7 do
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begin
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m := (b[j][0] shl 1) or b[j][5];
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n := (b[j][1] shl 3) or (b[j][2] shl 2) or (b[j][3] shl 1) or (b[j][4]);
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for k := 0 to 3 do
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b[j][k] := min(sbox[j][m][n] and (1 shl (3-k)), 1); // store binary
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end;
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for j := 0 to 7 do
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for k := 0 to 3 do
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cb[j*4+k] := b[j][k];
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permute(@pcb[0], @cb[0], @perm5[0], 32);
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mxor(@r2[0], @l[0], @pcb[0], 32);
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for j := 0 to 31 do
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begin
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l[j] := r[j];
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r[j] := r2[j];
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end;
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end;
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concat(@rl[0], @r[0], @l[0], 32, 32);
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permute(_out, @rl[0], @perm6[0], 64);
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end;
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procedure str_to_key({in} const str: PByte; {out} const key: PByte);
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var
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i: Integer;
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begin
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key[0] := str[0] shr 1;
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key[1] := ((str[0] and $01) shl 6) or (str[1] shr 2);
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key[2] := ((str[1] and $03) shl 5) or (str[2] shr 3);
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key[3] := ((str[2] and $07) shl 4) or (str[3] shr 4);
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key[4] := ((str[3] and $0F) shl 3) or (str[4] shr 5);
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key[5] := ((str[4] and $1F) shl 2) or (str[5] shr 6);
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key[6] := ((str[5] and $3F) shl 1) or (str[6] shr 7);
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key[7] := str[6] and $7F;
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for i := 0 to 7 do
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key[i] := key[i] shl 1;
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end;
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procedure smbhash({out} const _out: PByte; {in} const _in: PByte; {in} const key: PByte; {in} const forw: Boolean);
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var
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i : Integer;
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outb : array[0..63] of Byte;
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inb : array[0..63] of Byte;
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keyb : array[0..63] of Byte;
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key2 : array[0..7] of Byte;
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begin
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str_to_key(key, @key2[0]);
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for i := 0 to 63 do
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begin
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inb[i] := min( _in[i div 8] and (1 shl (7-(i mod 8))), 1); // store binary
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keyb[i] := min(key2[i div 8] and (1 shl (7-(i mod 8))), 1); // store binary
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outb[i] := 0;
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end;
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dohash(@outb[0], @inb[0], @keyb[0], forw);
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for i := 0 to 7 do
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_out[I] := 0;
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for i := 0 to 63 do
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begin
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if outb[i] <> 0 then
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_out[i div 8] := _out[i div 8] or (1 shl (7-(i mod 8)));
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end;
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end;
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procedure E_P16({in} const p14: PByte; {out} const p16: PByte);
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const
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sp8: array[0..7] of Byte = ($4b, $47, $53, $21, $40, $23, $24, $25);
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begin
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smbhash(@p16[0], @sp8[0], @p14[0], True);
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smbhash(@p16[8], @sp8[0], @p14[7], True);
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end;
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(*procedure E_P24({in} const p21: PByte; {in} const c8: PByte; {out} const p24: PByte);
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begin
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smbhash(@p24[0], c8, @p21[0], True);
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smbhash(@p24[8], c8, @p21[7], True);
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smbhash(@p24[16], c8, @p21[14], True);
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end;*)
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function LMGenerate(const Password: PChar): TMDDigest;
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var
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dospwd: array[0..14] of Byte;
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begin
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if not Assigned(Password) then
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Exit;
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FillChar(dospwd, Sizeof(dospwd), 0);
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(* Password must be converted to DOS charset - null terminated, uppercase *)
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StrLCopy(PChar(@dospwd[0]), PChar(@Password[0]), SizeOf(dospwd)-1);
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StrUpper(PChar(@dospwd[0]));
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(* Only the first 14 chars are considered, password need not be null terminated *)
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E_P16(@dospwd[0], @Result);
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FillChar(dospwd, Sizeof(dospwd), 0);
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end;
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function NTGenerate(const Password: PChar): TMDDigest;
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var
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pos: Integer;
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wpwd: array[0..127] of WideChar;
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begin
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if not Assigned(Password) then
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Exit;
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pos := 0;
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while (pos < 128) and (Password[pos] <> #0) do
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begin
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wpwd[pos] := Password[pos];
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inc(pos);
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end;
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Result := MDBuffer(wpwd, 2*pos, MD_VERSION_4);
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FillChar(wpwd, Sizeof(wpwd), 0);
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end;
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end.
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