public void Update(byte input)
{
if (this.bufOff == this.buf.Length)
{
byte[] array = new byte[this.buf.Length];
Array.Copy(this.buf, 0, array, 0, this.mac.Length);
if (this.firstStep)
{
this.firstStep = false;
}
else
{
array = Gost28147Mac.CM5func(this.buf, 0, this.mac);
}
this.gost28147MacFunc(this.workingKey, array, 0, this.mac, 0);
this.bufOff = 0;
}
this.buf[this.bufOff++] = input;
}
public int DoFinal(byte[] output, int outOff)
{
while (this.bufOff < 8)
{
this.buf[this.bufOff++] = 0;
}
byte[] array = new byte[this.buf.Length];
Array.Copy(this.buf, 0, array, 0, this.mac.Length);
if (this.firstStep)
{
this.firstStep = false;
}
else
{
array = Gost28147Mac.CM5func(this.buf, 0, this.mac);
}
this.gost28147MacFunc(this.workingKey, array, 0, this.mac, 0);
Array.Copy(this.mac, this.mac.Length / 2 - 4, output, outOff, 4);
this.Reset();
return(4);
}
public void BlockUpdate(byte[] input, int inOff, int len)
{
if (len < 0)
{
throw new ArgumentException("Can't have a negative input length!");
}
int num = 8 - this.bufOff;
if (len > num)
{
Array.Copy(input, inOff, this.buf, this.bufOff, num);
byte[] array = new byte[this.buf.Length];
Array.Copy(this.buf, 0, array, 0, this.mac.Length);
if (this.firstStep)
{
this.firstStep = false;
}
else
{
array = Gost28147Mac.CM5func(this.buf, 0, this.mac);
}
this.gost28147MacFunc(this.workingKey, array, 0, this.mac, 0);
this.bufOff = 0;
len -= num;
inOff += num;
while (len > 8)
{
array = Gost28147Mac.CM5func(input, inOff, this.mac);
this.gost28147MacFunc(this.workingKey, array, 0, this.mac, 0);
len -= 8;
inOff += 8;
}
}
Array.Copy(input, inOff, this.buf, this.bufOff, len);
this.bufOff += len;
}
