public static byte[] ToBytesPadded(BigInteger value, int length)
{
byte[] result = new byte[length];
byte[] bytes = value.BigIntegerToBytes();
int bytesLength;
byte srcOffset;
if (bytes[0] == 0)
{
bytesLength = bytes.Length - 1;
srcOffset = 1;
}
else
{
bytesLength = bytes.Length;
srcOffset = 0;
}
if (bytesLength > length)
{
throw new ArgumentOutOfRangeException(nameof(length), $"Input is too large to put in byte array of size; {bytesLength}>{length}");
}
int destOffset = length - bytesLength;
Unsafe.CopyBlock(ref result[destOffset], ref bytes[srcOffset], (uint)bytesLength);
//Array.Copy(bytes, srcOffset, result, destOffset, bytesLength);
return(result);
}
public static RlpString Create(BigInteger value)
{
// RLP encoding only supports positive integer values
if (value.SignValue < 1)
{
return(new RlpString(EMPTY));
}
var bytes = value.BigIntegerToBytes();
return(new RlpString(bytes.SkipWhile(element => element == 0).ToArray()));
}
public static byte[] BigIntToBytesWithPadding(BigInteger bigint, int size)
{
byte[] asBytes = bigint.BigIntegerToBytes();
var newArray = new byte[size];
var startAt = newArray.Length - asBytes.Length;
Unsafe.CopyBlock(ref newArray[startAt], ref asBytes[0], (uint)asBytes.Length);
// Array.Copy(asBytes, 0, newArray, startAt, asBytes.Length);
return(newArray);
}