restemplate/indy/Protocols/IdSASLOTP.pas

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{
$Project$
$Workfile$
$Revision$
$DateUTC$
$Id$
This file is part of the Indy (Internet Direct) project, and is offered
under the dual-licensing agreement described on the Indy website.
(http://www.indyproject.org/)
Copyright:
(c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
}
{
$Log$
}
{
Rev 1.4 2004.02.03 5:45:12 PM czhower
Name changes
Rev 1.3 1/21/2004 4:03:16 PM JPMugaas
InitComponent
Rev 1.2 10/19/2003 5:57:18 PM DSiders
Added localization comments.
Rev 1.1 5/10/2003 10:10:44 PM JPMugaas
Bug fixes.
Rev 1.0 12/16/2002 03:27:22 AM JPMugaas
Initial version of IdSASLOTP. This is the OTP (One-Time-only password) SASL
mechanism.
}
{This is based on RFC2444}
unit IdSASLOTP;
interface
{$i IdCompilerDefines.inc}
uses
IdException,
IdSASL,
IdSASLUserPass;
type
TIdSASLOTP = class(TIdSASLUserPass)
protected
function GenerateOTP(const AResponse, APassword: String): String;
procedure InitComponent; override;
public
class function ServiceName: TIdSASLServiceName; override;
function TryStartAuthenticate(const AHost, AProtocolName : String; var VInitialResponse: String): Boolean; override;
function StartAuthenticate(const AChallenge, AHost, AProtocolName : String): String; override;
function ContinueAuthenticate(const ALastResponse, AHost, AProtocolName : String): String; override;
end;
implementation
uses
IdBaseComponent, IdGlobal, IdOTPCalculator, IdUserPassProvider;
{ TIdSASLOTP }
function TIdSASLOTP.ContinueAuthenticate(const ALastResponse, AHost, AProtocolName : String): String;
begin
Result := GenerateOTP(ALastResponse, GetPassword);
end;
procedure TIdSASLOTP.InitComponent;
begin
inherited InitComponent;
FSecurityLevel := 1000;
end;
class function TIdSASLOTP.ServiceName: TIdSASLServiceName;
begin
Result := 'OTP'; {Do not translate}
end;
function TIdSASLOTP.TryStartAuthenticate(const AHost, AProtocolName : string;
var VInitialResponse: String): Boolean;
begin
VInitialResponse := GetUsername;
Result := True;
end;
function TIdSASLOTP.StartAuthenticate(const AChallenge, AHost, AProtocolName : string): String;
begin
Result := GetUsername;
end;
function TIdSASLOTP.GenerateOTP(const AResponse, APassword: String): String;
var
LKey: String;
begin
if TIdOTPCalculator.GenerateSixWordKey(AResponse, APassword, LKey) then begin
Result := 'word:' + LKey; {do not localize}
end else begin
Result := '';
end;
end;
end.