public static byte[] encodeInteger(BigInteger x)
{
if (x < 0)
{
throw new ArgumentException("x cannot be negative");
}
string t = x.ToString("X");
if (t.Length % 2 == 1)
{
t = "0" + t;
}
byte[] xBytes = BinaryAscii.binaryFromHex(t);
int num = xBytes[0];
if (num <= hex127)
{
return(combineByteArrays(new List <byte[]> {
bytesHexB,
Bytes.intToCharBytes(xBytes.Length),
xBytes
}));
}
return(combineByteArrays(new List <byte[]> {
bytesHexB,
Bytes.intToCharBytes(xBytes.Length + 1),
bytesHexAt,
xBytes
}));
}
private static byte[] encodeLength(int length)
{
if (length < 0)
{
throw new ArgumentException("length cannot be negative");
}
if (length < hex128)
{
return(Bytes.intToCharBytes(length));
}
string s = length.ToString("X");
if ((s.Length % 2) == 1)
{
s = "0" + s;
}
byte[] bytes = BinaryAscii.binaryFromHex(s);
int lengthLen = bytes.Length;
return(combineByteArrays(new List <byte[]> {
Bytes.intToCharBytes(hex128 | lengthLen),
bytes
}));
}
