public void X919MacTest()
{
var hk = new HexKey("838652DF68A246046DAB6104583B201A");
const string data = "30303030303030303131313131313131";
var iv = "0000000000000000";
// Binary data MACing.
var hexStr = ("00000000").GetBytes().GetHexString();
Assert.AreEqual("3F431586CA33D99C", IsoX919Mac.MacHexData(hexStr, hk, iv, IsoX919BlockType.OnlyBlock));
// Binary un-padded data MACing.
hexStr = ("000000001").GetBytes().GetHexString();
Assert.AreEqual("2FE7118F2074398E", IsoX919Mac.MacHexData(hexStr, hk, iv, IsoX919BlockType.OnlyBlock));
// Successive hex data MACing.
iv = IsoX919Mac.MacHexData(data, hk, iv, IsoX919BlockType.FirstBlock);
Assert.AreEqual("A9D4D96683B51333", iv);
iv = IsoX919Mac.MacHexData(data, hk, iv, IsoX919BlockType.NextBlock);
Assert.AreEqual("DA46CEC9E61AF065", iv);
iv = IsoX919Mac.MacHexData(data, hk, iv, IsoX919BlockType.NextBlock);
Assert.AreEqual("56A27E35442BD07D", iv);
iv = IsoX919Mac.MacHexData(data, hk, iv, IsoX919BlockType.NextBlock);
Assert.AreEqual("B12874BED7137303", iv);
iv = IsoX919Mac.MacHexData(data, hk, iv, IsoX919BlockType.FinalBlock);
Assert.AreEqual("0D99127F7734AA58", iv);
}
/// <summary>
/// Process request.
/// </summary>
/// <returns>Response message.</returns>
public override StreamResponse ConstructResponse()
{
var mr = new StreamResponse();
var cryptKey = new HexKey(_key);
if ((cryptKey.Length == KeyLength.SingleLength && _keyLength != KeySingle) ||
(cryptKey.Length == KeyLength.DoubleLength && _keyLength != KeyDouble))
{
mr.Append(ErrorCodes.ER_04_INVALID_KEY_TYPE_CODE);
return(mr);
}
var len = Convert.ToInt32(_msgLength, 16);
if (_messageType == InputHex)
{
len = len * 2;
}
if (_strMsg.Length < len)
{
mr.Append(ErrorCodes.ER_80_DATA_LENGTH_ERROR);
return(mr);
}
var rawData = _messageType == InputHex
? _strMsg.Substring(0, len)
: _strMsg.Substring(0, len).GetBytes().GetHexString();
var clearKey = _keyType == KeyTak
? new HexKeyThales(new KeyTypeCode(0, LmkPair.Pair16_17), false, _key)
: new HexKeyThales(new KeyTypeCode(0, LmkPair.Pair26_27), false, _key);
var block = IsoX919BlockType.FinalBlock;
switch (_blockNumber)
{
case MacSingleBlock:
block = IsoX919BlockType.OnlyBlock;
_iv = Zeroes;
break;
case MacFirstBlock:
block = IsoX919BlockType.FirstBlock;
_iv = Zeroes;
break;
case MacMiddleBlock:
block = IsoX919BlockType.NextBlock;
break;
}
var mac = IsoX919Mac.MacHexData(rawData, clearKey.ClearHexKey, _iv, block);
Log.InfoFormat("Key (clear): {0}", clearKey.ClearKey);
Log.InfoFormat("IV: {0}", _iv);
Log.InfoFormat("Resulting MAC: {0}", mac);
mr.Append(ErrorCodes.ER_00_NO_ERROR);
mr.Append(mac);
return(mr);
}
