81 lines
2.6 KiB
ObjectPascal
81 lines
2.6 KiB
ObjectPascal
|
{*******************************************************}
|
||
|
|
|
||
|
|
{ Renegade BBS }
|
||
|
|
|
||
|
|
{ Copyright (c) 1990-2013 The Renegade Dev Team }
|
||
|
|
{ Copyleft (ↄ) 2016-2017 Renegade BBS }
|
||
|
|
|
||
|
|
{ This file is part of Renegade BBS }
|
||
|
|
|
||
|
|
{ Renegade is free software: you can redistribute it }
|
||
|
|
{ and/or modify it under the terms of the GNU General }
|
||
|
|
{ Public License as published by the Free Software }
|
||
|
|
{ Foundation, either version 3 of the License, or }
|
||
|
|
{ (at your option) any later version. }
|
||
|
|
|
||
|
|
{ Renegade is distributed in the hope that it will be }
|
||
|
|
{ useful, but WITHOUT ANY WARRANTY; without even the }
|
||
|
|
{ implied warranty of MERCHANTABILITY or FITNESS FOR }
|
||
|
|
{ A PARTICULAR PURPOSE. See the GNU General Public }
|
||
|
|
{ License for more details. }
|
||
|
|
|
||
|
|
{ You should have received a copy of the GNU General }
|
||
|
|
{ Public License along with Renegade. If not, see }
|
||
|
|
{ <http://www.gnu.org/licenses/>. }
|
||
|
|
|
||
|
|
{*******************************************************}
|
||
|
|
{ _______ __ }
|
||
|
|
{ | _ .-----.-----.-----.-----.---.-.--| .-----. }
|
||
|
|
{ |. l | -__| | -__| _ | _ | _ | -__| }
|
||
|
|
{ |. _ |_____|__|__|_____|___ |___._|_____|_____| }
|
||
|
|
{ |: | | |_____| }
|
||
|
|
{ |::.|:. | }
|
||
|
|
{ `--- ---' }
|
||
|
|
{*******************************************************}
|
||
|
|
|
||
|
|
unit Hash.Util;
|
||
|
|
{$codepage utf8}
|
||
|
|
{$h+}{$mode objfpc}
|
||
|
|
|
||
|
|
interface
|
||
|
|
|
||
|
|
type
|
||
|
|
RTHashUtil = object
|
||
|
|
public
|
||
|
|
function HashEquals(KnownHash, CheckedHash : ansistring): boolean;static;
|
||
|
|
end;
|
||
|
|
|
||
|
|
implementation
|
||
|
|
|
||
|
|
function RTHashUtil.HashEquals(KnownHash, CheckedHash : ansistring): boolean;
|
||
|
|
var
|
||
|
|
HashCounter,
|
||
|
|
ResultStatus : SizeInt;
|
||
|
|
begin
|
||
|
|
ResultStatus := 0;
|
||
|
|
if Length(KnownHash) <> Length(CheckedHash) then
|
||
|
|
begin
|
||
|
|
Result := False;
|
||
|
|
Exit;
|
||
|
|
end;
|
||
|
|
for HashCounter := 1 to Length(KnownHash) do
|
||
|
|
begin
|
||
|
|
{
|
||
|
|
From ext/standard/password.c php_password_verify line 244
|
||
|
|
We're using this method instead of = in order to provide
|
||
|
|
resistance towards timing attacks. This is a constant time
|
||
|
|
equality check that will always check every byte of both
|
||
|
|
values.
|
||
|
|
|
||
|
|
}
|
||
|
|
ResultStatus := ResultStatus or
|
||
|
|
(ord(CheckedHash[HashCounter]) xor
|
||
|
|
ord(KnownHash[HashCounter]));
|
||
|
|
|
||
|
|
end;
|
||
|
|
|
||
|
|
Result := (ResultStatus = 0);
|
||
|
|
end;
|
||
|
|
|
||
|
|
end.
|