/// <summary>
///
/// </summary>
/// <param name="data"></param>
/// <param name="key"></param>
/// <returns></returns>
public static byte[] ComputePayPassMac(this byte[] data, KeyParameter key)
{
IBlockCipher cipher = new DesEdeEngine();
IMac mac = new CbcBlockCipherMac(cipher, 64, new ISO7816d4Padding());
mac.Init(key);
mac.BlockUpdate(data, 0, data.Length);
var m = new byte[mac.GetMacSize()];
mac.DoFinal(m, 0);
return(m);
}
private int calculateMac(byte[] data, int dataOff, int dataLen, byte[] macBlock)
{
IMac cMac = new CbcBlockCipherMac(cipher, macSize * 8);
cMac.Init(keyParam);
//
// build b0
//
byte[] b0 = new byte[16];
if (HasAssociatedText())
{
b0[0] |= 0x40;
}
b0[0] |= (byte)((((cMac.GetMacSize() - 2) / 2) & 0x7) << 3);
b0[0] |= (byte)(((15 - nonce.Length) - 1) & 0x7);
Array.Copy(nonce, 0, b0, 1, nonce.Length);
int q = dataLen;
int count = 1;
while (q > 0)
{
b0[b0.Length - count] = (byte)(q & 0xff);
q >>= 8;
count++;
}
cMac.BlockUpdate(b0, 0, b0.Length);
//
// process associated text
//
if (HasAssociatedText())
{
int extra;
int textLength = GetAssociatedTextLength();
if (textLength < ((1 << 16) - (1 << 8)))
{
cMac.Update((byte)(textLength >> 8));
cMac.Update((byte)textLength);
extra = 2;
}
else // can't go any higher than 2^32
{
cMac.Update((byte)0xff);
cMac.Update((byte)0xfe);
cMac.Update((byte)(textLength >> 24));
cMac.Update((byte)(textLength >> 16));
cMac.Update((byte)(textLength >> 8));
cMac.Update((byte)textLength);
extra = 6;
}
if (initialAssociatedText != null)
{
cMac.BlockUpdate(initialAssociatedText, 0, initialAssociatedText.Length);
}
if (associatedText.Position > 0)
{
cMac.BlockUpdate(associatedText.ToArray() /*GetBuffer()*/, 0, (int)associatedText.Position);
}
extra = (extra + textLength) % 16;
if (extra != 0)
{
for (int i = extra; i < 16; ++i)
{
cMac.Update((byte)0x00);
}
}
}
//
// add the text
//
cMac.BlockUpdate(data, dataOff, dataLen);
return(cMac.DoFinal(macBlock, 0));
}
private int calculateMac(byte[] data, int dataOff, int dataLen, byte[] macBlock)
{
IMac mac = new CbcBlockCipherMac(this.cipher, this.macSize * 8);
mac.Init(this.keyParam);
byte[] array = new byte[16];
if (this.HasAssociatedText())
{
byte[] expr_37_cp_0 = array;
int expr_37_cp_1 = 0;
expr_37_cp_0[expr_37_cp_1] |= 64;
}
byte[] expr_4D_cp_0 = array;
int expr_4D_cp_1 = 0;
expr_4D_cp_0[expr_4D_cp_1] |= (byte)(((mac.GetMacSize() - 2) / 2 & 7) << 3);
byte[] expr_70_cp_0 = array;
int expr_70_cp_1 = 0;
expr_70_cp_0[expr_70_cp_1] |= (byte)(15 - this.nonce.Length - 1 & 7);
Array.Copy(this.nonce, 0, array, 1, this.nonce.Length);
int i = dataLen;
int num = 1;
while (i > 0)
{
array[array.Length - num] = (byte)(i & 255);
i >>= 8;
num++;
}
mac.BlockUpdate(array, 0, array.Length);
if (this.HasAssociatedText())
{
int associatedTextLength = this.GetAssociatedTextLength();
int num2;
if (associatedTextLength < 65280)
{
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num2 = 2;
}
else
{
mac.Update(255);
mac.Update(254);
mac.Update((byte)(associatedTextLength >> 24));
mac.Update((byte)(associatedTextLength >> 16));
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num2 = 6;
}
if (this.initialAssociatedText != null)
{
mac.BlockUpdate(this.initialAssociatedText, 0, this.initialAssociatedText.Length);
}
if (this.associatedText.Position > 0L)
{
mac.BlockUpdate(this.associatedText.GetBuffer(), 0, (int)this.associatedText.Position);
}
num2 = (num2 + associatedTextLength) % 16;
if (num2 != 0)
{
for (int j = num2; j < 16; j++)
{
mac.Update(0);
}
}
}
mac.BlockUpdate(data, dataOff, dataLen);
return(mac.DoFinal(macBlock, 0));
}
private int calculateMac(byte[] data, int dataOff, int dataLen, byte[] macBlock)
{
IMac cMac = new CbcBlockCipherMac(cipher, parameters.MacSize);
byte[] nonce = parameters.GetNonce();
byte[] associatedText = parameters.GetAssociatedText();
cMac.Init(parameters.Key);
//
// build b0
//
byte[] b0 = new byte[16];
if (associatedText != null && associatedText.Length != 0)
{
b0[0] |= 0x40;
}
b0[0] |= (byte)((((cMac.GetMacSize() - 2) / 2) & 0x7) << 3);
b0[0] |= (byte)(((15 - nonce.Length) - 1) & 0x7);
Array.Copy(nonce, 0, b0, 1, nonce.Length);
int q = dataLen;
int count = 1;
while (q > 0)
{
b0[b0.Length - count] = (byte)(q & 0xff);
q >>= 8;
count++;
}
cMac.BlockUpdate(b0, 0, b0.Length);
//
// process associated text
//
if (associatedText != null)
{
int extra;
if (associatedText.Length < ((1 << 16) - (1 << 8)))
{
cMac.Update((byte)(associatedText.Length >> 8));
cMac.Update((byte)associatedText.Length);
extra = 2;
}
else // can't go any higher than 2^32
{
cMac.Update((byte)0xff);
cMac.Update((byte)0xfe);
cMac.Update((byte)(associatedText.Length >> 24));
cMac.Update((byte)(associatedText.Length >> 16));
cMac.Update((byte)(associatedText.Length >> 8));
cMac.Update((byte)associatedText.Length);
extra = 6;
}
cMac.BlockUpdate(associatedText, 0, associatedText.Length);
extra = (extra + associatedText.Length) % 16;
if (extra != 0)
{
for (int i = 0; i != 16 - extra; i++)
{
cMac.Update((byte)0x00);
}
}
}
//
// add the text
//
cMac.BlockUpdate(data, dataOff, dataLen);
return(cMac.DoFinal(macBlock, 0));
}
private int calculateMac(byte[] data, int dataOff, int dataLen, byte[] macBlock)
{
IMac mac = new CbcBlockCipherMac(cipher, macSize * 8);
mac.Init(keyParam);
byte[] array = new byte[16];
if (HasAssociatedText())
{
array[0] |= 64;
}
array[0] |= (byte)((((mac.GetMacSize() - 2) / 2) & 7) << 3);
array[0] |= (byte)((15 - nonce.Length - 1) & 7);
Array.Copy(nonce, 0, array, 1, nonce.Length);
int num = dataLen;
int num2 = 1;
while (num > 0)
{
array[array.Length - num2] = (byte)(num & 0xFF);
num >>= 8;
num2++;
}
mac.BlockUpdate(array, 0, array.Length);
if (HasAssociatedText())
{
int associatedTextLength = GetAssociatedTextLength();
int num3;
if (associatedTextLength < 65280)
{
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num3 = 2;
}
else
{
mac.Update(byte.MaxValue);
mac.Update(254);
mac.Update((byte)(associatedTextLength >> 24));
mac.Update((byte)(associatedTextLength >> 16));
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num3 = 6;
}
if (initialAssociatedText != null)
{
mac.BlockUpdate(initialAssociatedText, 0, initialAssociatedText.Length);
}
if (associatedText.Position > 0)
{
mac.BlockUpdate(associatedText.ToArray(), 0, (int)associatedText.Position);
}
num3 = (num3 + associatedTextLength) % 16;
if (num3 != 0)
{
for (int i = num3; i < 16; i++)
{
mac.Update(0);
}
}
}
mac.BlockUpdate(data, dataOff, dataLen);
return(mac.DoFinal(macBlock, 0));
}
private int CalculateMac(byte[] data, int dataOff, int dataLen, byte[] macBlock)
{
IMac mac = new CbcBlockCipherMac(this.cipher, this.macSize * 8);
mac.Init(this.keyParam);
byte[] destinationArray = new byte[0x10];
if (this.HasAssociatedText())
{
destinationArray[0] = (byte)(destinationArray[0] | 0x40);
}
destinationArray[0] = (byte)(destinationArray[0] | ((byte)((((mac.GetMacSize() - 2) / 2) & 7) << 3)));
destinationArray[0] = (byte)(destinationArray[0] | ((byte)(((15 - this.nonce.Length) - 1) & 7)));
Array.Copy(this.nonce, 0, destinationArray, 1, this.nonce.Length);
int num = dataLen;
for (int i = 1; num > 0; i++)
{
destinationArray[destinationArray.Length - i] = (byte)(num & 0xff);
num = num >> 8;
}
mac.BlockUpdate(destinationArray, 0, destinationArray.Length);
if (this.HasAssociatedText())
{
int num3;
int associatedTextLength = this.GetAssociatedTextLength();
if (associatedTextLength < 0xff00)
{
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num3 = 2;
}
else
{
mac.Update(0xff);
mac.Update(0xfe);
mac.Update((byte)(associatedTextLength >> 0x18));
mac.Update((byte)(associatedTextLength >> 0x10));
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num3 = 6;
}
if (this.initialAssociatedText != null)
{
mac.BlockUpdate(this.initialAssociatedText, 0, this.initialAssociatedText.Length);
}
if (this.associatedText.Position > 0L)
{
byte[] buffer = this.associatedText.GetBuffer();
int position = (int)this.associatedText.Position;
mac.BlockUpdate(buffer, 0, position);
}
num3 = (num3 + associatedTextLength) % 0x10;
if (num3 != 0)
{
for (int j = num3; j < 0x10; j++)
{
mac.Update(0);
}
}
}
mac.BlockUpdate(data, dataOff, dataLen);
return(mac.DoFinal(macBlock, 0));
}
private int CalculateMac(byte[] data, int dataOff, int dataLen, byte[] macBlock)
{
IMac mac = new CbcBlockCipherMac(cipher, macSize * 8);
mac.Init(keyParam);
byte[] array = new byte[16];
byte[] array2;
if (HasAssociatedText())
{
(array2 = array)[0] = (byte)(array2[0] | 0x40u);
}
(array2 = array)[0] = (byte)(array2[0] | (byte)((((mac.GetMacSize() - 2) / 2) & 7) << 3));
(array2 = array)[0] = (byte)(array2[0] | (byte)((uint)(15 - nonce.Length - 1) & 7u));
global::System.Array.Copy((global::System.Array)nonce, 0, (global::System.Array)array, 1, nonce.Length);
int num = dataLen;
int num2 = 1;
while (num > 0)
{
array[array.Length - num2] = (byte)((uint)num & 0xFFu);
num >>= 8;
num2++;
}
mac.BlockUpdate(array, 0, array.Length);
if (HasAssociatedText())
{
int associatedTextLength = GetAssociatedTextLength();
int num3;
if (associatedTextLength < 65280)
{
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num3 = 2;
}
else
{
mac.Update(255);
mac.Update(254);
mac.Update((byte)(associatedTextLength >> 24));
mac.Update((byte)(associatedTextLength >> 16));
mac.Update((byte)(associatedTextLength >> 8));
mac.Update((byte)associatedTextLength);
num3 = 6;
}
if (initialAssociatedText != null)
{
mac.BlockUpdate(initialAssociatedText, 0, initialAssociatedText.Length);
}
if (((Stream)associatedText).get_Position() > 0)
{
byte[] buffer = associatedText.GetBuffer();
int len = (int)((Stream)associatedText).get_Position();
mac.BlockUpdate(buffer, 0, len);
}
num3 = (num3 + associatedTextLength) % 16;
if (num3 != 0)
{
for (int i = num3; i < 16; i++)
{
mac.Update(0);
}
}
}
mac.BlockUpdate(data, dataOff, dataLen);
return(mac.DoFinal(macBlock, 0));
}