public override void Write(
byte[] buffer,
int offset,
int count)
{
if (outMac != null)
{
if (count > 0)
{
outMac.BlockUpdate(buffer, offset, count);
}
}
stream.Write(buffer, offset, count);
}
public static byte[] GenerateHKDF(byte[] salt, byte[] ikm, byte[] info, int len)
{
IMac PRKGen = MacUtilities.GetMac("HmacSHA256");
PRKGen.Init(new KeyParameter(MacUtilities.CalculateMac("HmacSHA256", new KeyParameter(salt), ikm)));
PRKGen.BlockUpdate(info, 0, info.Length);
PRKGen.Update((byte)1);
byte[] Result = MacUtilities.DoFinal(PRKGen);
if (Result.Length > len)
{
Array.Resize(ref Result, len);
}
return(Result);
}
/**
* Calculate the MAC for some given data.
*
* @param type The message type of the message.
* @param message A byte-buffer containing the message.
* @param offset The number of bytes to skip, before the message starts.
* @param length The length of the message.
* @return A new byte-buffer containing the MAC value.
*/
public /*virtual */ BufferSegment CalculateMac(long seqNo, byte type, byte[] message, int offset, int length)
{
ProtocolVersion serverVersion = context.ServerVersion;
bool isSsl = serverVersion.IsSsl;
int macHeaderLength = isSsl ? 11 : 13;
byte[] macHeader = BufferPool.Get(macHeaderLength, true);
TlsUtilities.WriteUint64(seqNo, macHeader, 0);
TlsUtilities.WriteUint8(type, macHeader, 8);
if (!isSsl)
{
TlsUtilities.WriteVersion(serverVersion, macHeader, 9);
}
TlsUtilities.WriteUint16(length, macHeader, macHeaderLength - 2);
mac.BlockUpdate(macHeader, 0, macHeaderLength);
mac.BlockUpdate(message, offset, length);
BufferPool.Release(macHeader);
return(Truncate(MacUtilities.DoFinalOptimized(mac)));
}
private static void XTest(string mechanism, IMac digest, byte[] test)
{
byte[] hash1 = new byte[digest.GetMacSize()];
byte[] hash2 = new byte[digest.GetMacSize()];
digest.BlockUpdate(test, 0, test.Length);
digest.DoFinal(hash1, 0);
digest.BlockUpdate(test, 0, test.Length);
digest.DoFinal(hash2, 0);
bool diff = !StructuralComparisons.StructuralEqualityComparer.Equals(hash2, hash1);
Console.Write("{0}{1} hash {2} bits - ", mechanism.PadRight(32), digest.AlgorithmName.PadRight(32), hash1.Length * 8);
if (diff)
{
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("diff");
_diff++;
Console.ResetColor();
}
else
{
Console.WriteLine("same");
}
}
private void aliasTest(
KeyParameter key,
string primary,
params string[] aliases)
{
IMac mac = MacUtilities.GetMac(primary);
//
// standard DAC - zero IV
//
mac.Init(key);
mac.BlockUpdate(input, 0, input.Length);
byte[] refBytes = new byte[mac.GetMacSize()];
mac.DoFinal(refBytes, 0);
for (int i = 0; i != aliases.Length; i++)
{
mac = MacUtilities.GetMac(aliases[i]);
mac.Init(key);
mac.BlockUpdate(input, 0, input.Length);
byte[] outBytes = new byte[mac.GetMacSize()];
mac.DoFinal(outBytes, 0);
if (!AreEqual(outBytes, refBytes))
{
Fail("Failed - expected "
+ Hex.ToHexString(refBytes) + " got "
+ Hex.ToHexString(outBytes));
}
}
}
/// <summary>
/// Method to check if the mic is valid
/// </summary>
/// <param name="nwskey">the network security key</param>
/// <returns></returns>
public bool CheckMic(string nwskey)
{
IMac mac = MacUtilities.GetMac("AESCMAC");
KeyParameter key = new KeyParameter(StringToByteArray(nwskey));
mac.Init(key);
byte[] block = { 0x49, 0x00, 0x00, 0x00, 0x00, (byte)this.payloadMessage.direction, (byte)(this.payloadMessage.devAddr[3]), (byte)(payloadMessage.devAddr[2]), (byte)(payloadMessage.devAddr[1]),
(byte)(payloadMessage.devAddr[0]), this.payloadMessage.fcnt[0], this.payloadMessage.fcnt[1], 0x00, 0x00, 0x00, (byte)(this.payloadMessage.rawMessage.Length - 4) };
var algoinput = block.Concat(this.payloadMessage.rawMessage.Take(this.payloadMessage.rawMessage.Length - 4)).ToArray();
byte[] result = new byte[16];
mac.BlockUpdate(algoinput, 0, algoinput.Length);
result = MacUtilities.DoFinal(mac);
return(this.payloadMessage.mic.SequenceEqual(result.Take(4).ToArray()));
}
/// <summary>
/// A Method to calculate the Mic of the message
/// </summary>
/// <returns> the Mic bytes</returns>
public byte[] CalculateMic(string appKey, byte[] algoinput)
{
IMac mac = MacUtilities.GetMac("AESCMAC");
KeyParameter key = new KeyParameter(ConversionHelper.StringToByteArray(appKey));
mac.Init(key);
byte[] rfu = new byte[1];
rfu[0] = 0x0;
byte[] msgLength = BitConverter.GetBytes(algoinput.Length);
byte[] result = new byte[16];
mac.BlockUpdate(algoinput, 0, algoinput.Length);
result = MacUtilities.DoFinal(mac);
this.Mic = result.Take(4).ToArray();
return(this.Mic.ToArray());
}
private void F(
byte[] P,
byte[] S,
int c,
byte[] iBuf,
byte[] outBytes,
int outOff)
{
byte[] state = new byte[hMac.GetMacSize()];
ICipherParameters param = new KeyParameter(P);
hMac.Init(param);
if (S != null)
{
hMac.BlockUpdate(S, 0, S.Length);
}
hMac.BlockUpdate(iBuf, 0, iBuf.Length);
hMac.DoFinal(state, 0);
Array.Copy(state, 0, outBytes, outOff, state.Length);
for (int count = 1; count != c; count++)
{
hMac.Init(param);
hMac.BlockUpdate(state, 0, state.Length);
hMac.DoFinal(state, 0);
for (int j = 0; j != state.Length; j++)
{
outBytes[outOff + j] ^= state[j];
}
}
}
public virtual void ProcessAadBytes(byte[] inBytes, int inOff, int len)
{
if (null == inBytes)
{
throw new ArgumentNullException("inBytes");
}
if (inOff < 0)
{
throw new ArgumentException("cannot be negative", "inOff");
}
if (len < 0)
{
throw new ArgumentException("cannot be negative", "len");
}
Check.DataLength(inBytes, inOff, len, "input buffer too short");
CheckAad();
if (len > 0)
{
this.mAadCount = IncrementCount(mAadCount, (uint)len, AadLimit);
mPoly1305.BlockUpdate(inBytes, inOff, len);
}
}
public override int Read(
byte[] buffer,
int offset,
int count)
{
int n = stream.Read(buffer, offset, count);
if (inMac != null)
{
if (n > 0)
{
inMac.BlockUpdate(buffer, offset, n);
}
}
return(n);
}
public void SetMic(string nwskey)
{
rawMessage = this.ToMessage();
IMac mac = MacUtilities.GetMac("AESCMAC");
KeyParameter key = new KeyParameter(StringToByteArray(nwskey));
mac.Init(key);
byte[] block = { 0x49, 0x00, 0x00, 0x00, 0x00, (byte)direction, (byte)(devAddr[3]), (byte)(devAddr[2]), (byte)(devAddr[1]),
(byte)(devAddr[0]), fcnt[0], fcnt[1], 0x00, 0x00, 0x00, (byte)(rawMessage.Length) };
var algoinput = block.Concat(rawMessage.Take(rawMessage.Length)).ToArray();
byte[] result = new byte[16];
mac.BlockUpdate(algoinput, 0, algoinput.Length);
result = MacUtilities.DoFinal(mac);
mic = result.Take(4).ToArray();
}
private byte[] CalculateDesMac(byte[] input, byte[] icv, int macType = 0)
{
if (icv == null)
{
icv = new byte[8];
}
IMac mac = null;
switch (macType)
{
case 0:
mac = MacUtilities.GetMac("DESEDEMAC64");
//mac = new ISO9797Alg3Mac(new DesEngine());
//mac = MacUtilities.GetMac("DESWITHISO9797");
break;
case 1:
mac = MacUtilities.GetMac("DESEDEMAC64WITHISO7816-4PADDING");
break;
case 2:
//mac = MacUtilities.GetMac("DESMAC");
mac = MacUtilities.GetMac("ISO9797ALG3WITHISO7816-4PADDING");
break;
case 3:
//mac = MacUtilities.GetMac("DESMAC/CFB8");
mac = MacUtilities.GetMac("DESWITHISO9797");
break;
} //switch(macType)
mac.Init(new KeyParameter(theKey));
mac.BlockUpdate(input, 0, input.Length);
byte[] result = new byte[8];
int outL = mac.DoFinal(result, 0);
if (outL > 0)
{
log.Debug(outL.ToString());
}
return(result);
} //private byte[] CalculateDesMac(byte[] input, byte[] icv)
private byte[] PerformMic(string appKey)
{
IMac mac = MacUtilities.GetMac("AESCMAC");
KeyParameter key = new KeyParameter(ConversionHelper.StringToByteArray(appKey));
mac.Init(key);
var algoinput = Mhdr.ToArray().Concat(AppEUI.ToArray()).Concat(DevEUI.ToArray()).Concat(DevNonce.ToArray()).ToArray();
byte[] result = new byte[19];
mac.BlockUpdate(algoinput, 0, algoinput.Length);
result = MacUtilities.DoFinal(mac);
var resStr = BitConverter.ToString(result);
return(result.Take(4).ToArray());
}
public byte[] Compute()
{
byte[] key = Encoding.Default.GetBytes(txtKey.Text);
byte[] input = Encoding.Default.GetBytes(txtInput.Text);
_mac.Reset();
_mac.Init(new KeyParameter(key));
byte[] result = new byte[_mac.GetMacSize()];
_mac.BlockUpdate(input, 0, input.Length);
_mac.DoFinal(result, 0);
return(Result = result);
}
/// <summary>
/// Method to check if the mic is valid
/// </summary>
/// <param name="nwskey">the network security key</param>
/// <returns>if the Mic is valid or not</returns>
public override bool CheckMic(string nwskey)
{
IMac mac = MacUtilities.GetMac("AESCMAC");
KeyParameter key = new KeyParameter(ConversionHelper.StringToByteArray(nwskey));
mac.Init(key);
byte[] block =
{
0x49, 0x00, 0x00, 0x00, 0x00, (byte)Direction, (byte)DevAddr.Span[3], (byte)DevAddr.Span[2], (byte)DevAddr.Span[1],
(byte)DevAddr.Span[0], Fcnt.Span[0], Fcnt.Span[1], 0x00, 0x00, 0x00, (byte)(RawMessage.Length - 4)
};
var algoinput = block.Concat(RawMessage.Take(RawMessage.Length - 4)).ToArray();
byte[] result = new byte[16];
mac.BlockUpdate(algoinput, 0, algoinput.Length);
result = MacUtilities.DoFinal(mac);
return(Mic.ToArray().SequenceEqual(result.Take(4).ToArray()));
}
internal static byte[] CalculatePbeMac(
DerObjectIdentifier oid,
byte[] salt,
int itCount,
char[] password,
bool wrongPkcs12Zero,
byte[] data)
{
Asn1Encodable asn1Params = PbeUtilities.GenerateAlgorithmParameters(
oid, salt, itCount);
ICipherParameters cipherParams = PbeUtilities.GenerateCipherParameters(
oid, password, wrongPkcs12Zero, asn1Params);
IMac mac = (IMac) PbeUtilities.CreateEngine(oid);
mac.Init(cipherParams);
mac.BlockUpdate(data, 0, data.Length);
return MacUtilities.DoFinal(mac);
}
public virtual void Init(bool forEncryption, ICipherParameters parameters)
{
//IL_007e: Unknown result type (might be due to invalid IL or missing references)
this.forEncryption = forEncryption;
byte[] array;
ICipherParameters parameters2;
if (parameters is AeadParameters)
{
AeadParameters aeadParameters = (AeadParameters)parameters;
array = aeadParameters.GetNonce();
initialAssociatedText = aeadParameters.GetAssociatedText();
macSize = aeadParameters.MacSize / 8;
parameters2 = aeadParameters.Key;
}
else
{
if (!(parameters is ParametersWithIV))
{
throw new ArgumentException("invalid parameters passed to EAX");
}
ParametersWithIV parametersWithIV = (ParametersWithIV)parameters;
array = parametersWithIV.GetIV();
initialAssociatedText = null;
macSize = mac.GetMacSize() / 2;
parameters2 = parametersWithIV.Parameters;
}
bufBlock = new byte[forEncryption ? blockSize : (blockSize + macSize)];
byte[] array2 = new byte[blockSize];
mac.Init(parameters2);
array2[blockSize - 1] = 0;
mac.BlockUpdate(array2, 0, blockSize);
mac.BlockUpdate(array, 0, array.Length);
mac.DoFinal(nonceMac, 0);
cipher.Init(forEncryption: true, new ParametersWithIV(null, nonceMac));
Reset();
}
public virtual byte[] Encrypt(string originStr)
{
if (string.IsNullOrWhiteSpace(originStr))
{
return(null);
}
var originbytes = Encoding.UTF8.GetBytes(originStr);
IMac mac = MacUtilities.GetMac(AlgorithmName);
mac.Init(Parameters);
mac.BlockUpdate(originbytes, 0, originbytes.Length);
var encryptBytes = new byte[mac.GetMacSize()];
mac.DoFinal(encryptBytes, 0);
return(encryptBytes);
}
public static byte[] ComputeMac(IMac mac, Stream s)
{
if (mac == null)
{
return(null);
}
byte[] buffer = new byte[512];
byte[] result = new byte[mac.GetMacSize()];
int bytesRead;
while ((bytesRead = s.Read(buffer, 0, buffer.Length)) > 0)
{
mac.BlockUpdate(buffer, 0, bytesRead);
}
mac.DoFinal(result, 0);
return(result);
}
public string PubnubAccessManagerSign(string key, string data)
{
string secret = key;
string message = data;
var encoding = new System.Text.UTF8Encoding();
byte[] keyByte = encoding.GetBytes(secret);
byte[] messageBytes = encoding.GetBytes(message);
#if NETFX_CORE
var hmacsha256 = MacAlgorithmProvider.OpenAlgorithm(MacAlgorithmNames.HmacSha256);
IBuffer valueBuffer = CryptographicBuffer.ConvertStringToBinary(message, BinaryStringEncoding.Utf8);
IBuffer buffKeyMaterial = CryptographicBuffer.ConvertStringToBinary(secret, BinaryStringEncoding.Utf8);
CryptographicKey cryptographicKey = hmacsha256.CreateKey(buffKeyMaterial);
// Sign the key and message together.
IBuffer bufferProtected = CryptographicEngine.Sign(cryptographicKey, valueBuffer);
DataReader dataReader = DataReader.FromBuffer(bufferProtected);
byte[] hashmessage = new byte[bufferProtected.Length];
dataReader.ReadBytes(hashmessage);
return(Convert.ToBase64String(hashmessage).Replace('+', '-').Replace('/', '_'));
#elif (WindowsCE || PocketPC)
//http://mycsharp.de/wbb2/thread.php?postid=3550104
KeyParameter paramKey = new KeyParameter(keyByte);
IMac mac = MacUtilities.GetMac("HMac-SHA256");
mac.Init(paramKey);
mac.Reset();
mac.BlockUpdate(messageBytes, 0, messageBytes.Length);
byte[] hashmessage = new byte[mac.GetMacSize()];
mac.DoFinal(hashmessage, 0);
return(Convert.ToBase64String(hashmessage).Replace('+', '-').Replace('/', '_'));
#else
using (var hmacsha256 = new HMACSHA256(keyByte))
{
byte[] hashmessage = hmacsha256.ComputeHash(messageBytes);
return(Convert.ToBase64String(hashmessage).Replace('+', '-').Replace('/', '_'));
}
#endif
}
public override bool CheckMic(string AppKey)
{
//appEUI = StringToByteArray("526973696E674846");
IMac mac = MacUtilities.GetMac("AESCMAC");
KeyParameter key = new KeyParameter(StringToByteArray(AppKey));
mac.Init(key);
byte[] tmp = new byte[0];
var algoinput = tmp.Concat(mhdr.ToArray()).Concat(appEUI).Concat(devEUI).Concat(devNonce).ToArray();
byte[] result = new byte[19];
mac.BlockUpdate(algoinput, 0, algoinput.Length);
result = MacUtilities.DoFinal(mac);
var resStr = BitConverter.ToString(result);
return(mic.ToArray().SequenceEqual(result.Take(4).ToArray()));
}
public string PubnubAccessManagerSign(string key, string data)
{
string secret = key;
string message = data;
var encoding = new System.Text.UTF8Encoding();
byte[] keyByte = encoding.GetBytes(secret);
byte[] messageBytes = encoding.GetBytes(message);
//http://mycsharp.de/wbb2/thread.php?postid=3550104
KeyParameter paramKey = new KeyParameter(keyByte);
IMac mac = MacUtilities.GetMac("HMac-SHA256");
mac.Init(paramKey);
mac.Reset();
mac.BlockUpdate(messageBytes, 0, messageBytes.Length);
byte[] hashmessage = new byte[mac.GetMacSize()];
mac.DoFinal(hashmessage, 0);
return(Convert.ToBase64String(hashmessage).Replace('+', '-').Replace('/', '_'));
}
public void SetMic(string nwskey)
{
var byteMsg = this.GetByteMessage();
IMac mac = MacUtilities.GetMac("AESCMAC");
KeyParameter key = new KeyParameter(ConversionHelper.StringToByteArray(nwskey));
mac.Init(key);
byte[] block =
{
0x49, 0x00, 0x00, 0x00, 0x00, (byte)Direction, (byte)DevAddr.Span[3], (byte)DevAddr.Span[2], (byte)DevAddr.Span[1],
(byte)DevAddr.Span[0], Fcnt.Span[0], Fcnt.Span[1], 0x00, 0x00, 0x00, (byte)byteMsg.Length
};
var algoinput = block.Concat(byteMsg.Take(byteMsg.Length)).ToArray();
byte[] result = new byte[16];
mac.BlockUpdate(algoinput, 0, algoinput.Length);
result = MacUtilities.DoFinal(mac);
var res = result.Take(4).ToArray();
Array.Copy(result.Take(4).ToArray(), 0, RawMessage, RawMessage.Length - 4, 4);
Mic = new Memory <byte>(RawMessage, RawMessage.Length - 4, 4);
}
public static byte[] DoFinal(IMac mac, byte[] input)
{
mac.BlockUpdate(input, 0, input.Length);
return(DoFinal(mac));
}
public static void Update(this IMac hmac, byte[] input)
{
hmac.BlockUpdate(input, 0, input.Length);
}
private static void UpdateMac(IMac mac, byte[] bytes)
{
mac.BlockUpdate(bytes, 0, bytes.Length);
Arrays.Fill(bytes, (byte)0);
}
protected virtual void UpdateRecordMac(IMac mac, byte[] buf, int off, int len)
{
mac.BlockUpdate(buf, off, len);
byte[] longLen = Pack.UInt64_To_LE((ulong)len);
mac.BlockUpdate(longLen, 0, longLen.Length);
}
public static byte[] DoFinal(IMac mac, byte[] input)
{
mac.BlockUpdate(input, 0, input.Length);
return DoFinal(mac);
}
public override void Write(byte[] b, int off, int len)
{
mac.BlockUpdate(b, off, len);
}
public void BlockUpdate(byte[] input, int inOff, int length)
{
_hash.BlockUpdate(input, inOff, length);
}
private static void UpdateMac(IMac mac, byte[] bytes)
{
mac.BlockUpdate(bytes, 0, bytes.Length);
Arrays.Fill(bytes, (byte)0);
}
private void testMultibyte(IMac mac, TestCase testCase)
{
mac.BlockUpdate(testCase.getAd(), 0, testCase.getAd().Length);
checkMac(mac, testCase);
}
public override void PerformTest()
{
// Mac mac = Mac.getInstance("AESCMAC", "BC");
IMac mac = MacUtilities.GetMac("AESCMAC");
//128 bytes key
// SecretKeySpec key = new SecretKeySpec(keyBytes128, "AES");
KeyParameter key = new KeyParameter(keyBytes128);
// 0 bytes message - 128 bytes key
mac.Init(key);
mac.BlockUpdate(input0, 0, input0.Length);
byte[] output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k128_m0))
{
Fail("Failed - expected " + Hex.ToHexString(output_k128_m0)
+ " got " + Hex.ToHexString(output));
}
// 16 bytes message - 128 bytes key
mac.Init(key);
mac.BlockUpdate(input16, 0, input16.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k128_m16))
{
Fail("Failed - expected " + Hex.ToHexString(output_k128_m16)
+ " got " + Hex.ToHexString(output));
}
// 40 bytes message - 128 bytes key
mac.Init(key);
mac.BlockUpdate(input40, 0, input40.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k128_m40))
{
Fail("Failed - expected " + Hex.ToHexString(output_k128_m40)
+ " got " + Hex.ToHexString(output));
}
// 64 bytes message - 128 bytes key
mac.Init(key);
mac.BlockUpdate(input64, 0, input64.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k128_m64))
{
Fail("Failed - expected " + Hex.ToHexString(output_k128_m64)
+ " got " + Hex.ToHexString(output));
}
//192 bytes key
// key = new SecretKeySpec(keyBytes192, "AES");
key = new KeyParameter(keyBytes192);
// 0 bytes message - 192 bytes key
mac.Init(key);
mac.BlockUpdate(input0, 0, input0.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k192_m0))
{
Fail("Failed - expected " + Hex.ToHexString(output_k192_m0)
+ " got " + Hex.ToHexString(output));
}
// 16 bytes message - 192 bytes key
mac.Init(key);
mac.BlockUpdate(input16, 0, input16.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k192_m16))
{
Fail("Failed - expected " + Hex.ToHexString(output_k192_m16)
+ " got " + Hex.ToHexString(output));
}
// 40 bytes message - 192 bytes key
mac.Init(key);
mac.BlockUpdate(input40, 0, input40.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k192_m40))
{
Fail("Failed - expected " + Hex.ToHexString(output_k192_m40)
+ " got " + Hex.ToHexString(output));
}
// 64 bytes message - 192 bytes key
mac.Init(key);
mac.BlockUpdate(input64, 0, input64.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k192_m64))
{
Fail("Failed - expected " + Hex.ToHexString(output_k192_m64)
+ " got " + Hex.ToHexString(output));
}
//256 bytes key
// key = new SecretKeySpec(keyBytes256, "AES");
key = new KeyParameter(keyBytes256);
// 0 bytes message - 256 bytes key
mac.Init(key);
mac.BlockUpdate(input0, 0, input0.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k256_m0))
{
Fail("Failed - expected " + Hex.ToHexString(output_k256_m0)
+ " got " + Hex.ToHexString(output));
}
// 16 bytes message - 256 bytes key
mac.Init(key);
mac.BlockUpdate(input16, 0, input16.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k256_m16))
{
Fail("Failed - expected " + Hex.ToHexString(output_k256_m16)
+ " got " + Hex.ToHexString(output));
}
// 40 bytes message - 256 bytes key
mac.Init(key);
mac.BlockUpdate(input40, 0, input40.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k256_m40))
{
Fail("Failed - expected " + Hex.ToHexString(output_k256_m40)
+ " got " + Hex.ToHexString(output));
}
// 64 bytes message - 256 bytes key
mac.Init(key);
mac.BlockUpdate(input64, 0, input64.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_k256_m64))
{
Fail("Failed - expected " + Hex.ToHexString(output_k256_m64)
+ " got " + Hex.ToHexString(output));
}
// mac = Mac.getInstance("DESedeCMAC", "BC");
mac = MacUtilities.GetMac("DESedeCMAC");
//DESede
// key = new SecretKeySpec(keyBytes128, "DESede");
key = new KeyParameter(keyBytes128);
// 0 bytes message - 128 bytes key
mac.Init(key);
mac.BlockUpdate(input0, 0, input0.Length);
output = MacUtilities.DoFinal(mac);
if (!AreEqual(output, output_des_ede))
{
Fail("Failed - expected " + Hex.ToHexString(output_des_ede)
+ " got " + Hex.ToHexString(output));
}
}
protected virtual void UpdateRecordMacLength(IMac mac, int len)
{
byte[] longLen = Pack.UInt64_To_LE((ulong)len);
mac.BlockUpdate(longLen, 0, longLen.Length);
}
private byte[] DecryptBlock(
byte[] in_enc,
int inOff,
int inLen,
byte[] z)
{
byte[] M = null;
KeyParameter macKey = null;
KdfParameters kParam = new KdfParameters(z, param.GetDerivationV());
int macKeySize = param.MacKeySize;
kdf.Init(kParam);
// Ensure that the length of the input is greater than the MAC in bytes
if (inLen < mac.GetMacSize())
{
throw new InvalidCipherTextException("Length of input must be greater than the MAC");
}
inLen -= mac.GetMacSize();
if (cipher == null) // stream mode
{
byte[] Buffer = GenerateKdfBytes(kParam, inLen + (macKeySize / 8));
M = new byte[inLen];
for (int i = 0; i != inLen; i++)
{
M[i] = (byte)(in_enc[inOff + i] ^ Buffer[i]);
}
macKey = new KeyParameter(Buffer, inLen, (macKeySize / 8));
}
else
{
int cipherKeySize = ((IesWithCipherParameters)param).CipherKeySize;
byte[] Buffer = GenerateKdfBytes(kParam, (cipherKeySize / 8) + (macKeySize / 8));
cipher.Init(false, new KeyParameter(Buffer, 0, (cipherKeySize / 8)));
M = cipher.DoFinal(in_enc, inOff, inLen);
macKey = new KeyParameter(Buffer, (cipherKeySize / 8), (macKeySize / 8));
}
byte[] macIV = param.GetEncodingV();
mac.Init(macKey);
mac.BlockUpdate(in_enc, inOff, inLen);
mac.BlockUpdate(macIV, 0, macIV.Length);
mac.DoFinal(macBuf, 0);
inOff += inLen;
byte[] T1 = Arrays.CopyOfRange(in_enc, inOff, inOff + macBuf.Length);
if (!Arrays.ConstantTimeAreEqual(T1, macBuf))
{
throw (new InvalidCipherTextException("Invalid MAC."));
}
return(M);
}
protected virtual void UpdateRecordMacText(IMac mac, byte[] buf, int off, int len)
{
mac.BlockUpdate(buf, off, len);
int partial = len % 16;
if (partial != 0)
{
mac.BlockUpdate(Zeroes, 0, 16 - partial);
}
}