public static int DERLengthEncode(Stream xdata, ulong length)
{
int num1 = 0;
int num2;
if (length <= (ulong)sbyte.MaxValue)
{
xdata.WriteByte((byte)length);
num2 = num1 + 1;
}
else
{
xdata.WriteByte((byte)(Asn1Util.BytePrecision(length) | 128));
num2 = num1 + 1;
for (int index = Asn1Util.BytePrecision(length); index > 0; --index)
{
xdata.WriteByte((byte)(length >> (index - 1) * 8));
++num2;
}
}
return(num2);
}
