| static private ShiftRight ( byte block ) : void | ||
| block | byte | |
| return | void | |
public void MultiplyH(byte[] x)
{
byte[] z = new byte[16];
for (int i = 0; i < 16; ++i)
{
byte h = H[i];
for (int j = 7; j >= 0; --j)
{
if ((h & (1 << j)) != 0)
{
GcmUtilities.Xor(z, x);
}
bool lsb = (x[15] & 1) != 0;
GcmUtilities.ShiftRight(x);
if (lsb)
{
// R = new byte[]{ 0xe1, ... };
//GcmUtilities.Xor(v, R);
x[0] ^= (byte)0xe1;
}
}
}
Array.Copy(z, 0, x, 0, 16);
}
internal static void MultiplyP(uint[] x)
{
int num = (x[3] & 1U) > 0U ? 1 : 0;
GcmUtilities.ShiftRight(x);
if (num == 0)
{
return;
}
x[0] ^= 3774873600U;
}
internal static void Multiply(byte[] block, byte[] val)
{
byte[] numArray = Arrays.Clone(block);
byte[] block1 = new byte[16];
for (int index1 = 0; index1 < 16; ++index1)
{
byte num1 = val[index1];
for (int index2 = 7; index2 >= 0; --index2)
{
if (((int)num1 & 1 << index2) != 0)
{
GcmUtilities.Xor(block1, numArray);
}
int num2 = ((uint)numArray[15] & 1U) > 0U ? 1 : 0;
GcmUtilities.ShiftRight(numArray);
if (num2 != 0)
{
numArray[0] ^= (byte)225;
}
}
}
Array.Copy((Array)block1, 0, (Array)block, 0, 16);
}
internal static void MultiplyP(uint[] x, uint[] z)
{
uint num = (uint)((int)GcmUtilities.ShiftRight(x, z) >> 8);
z[0] ^= (num & 3774873600u);
}
// Token: 0x060000FA RID: 250 RVA: 0x00008A08 File Offset: 0x00006C08
internal static void MultiplyP(uint[] x)
{
uint num = (uint)((int)GcmUtilities.ShiftRight(x) >> 8);
x[0] ^= (num & 3774873600U);
}