@Override
public byte[] toBytes() {
byte[] bytes = value.toByteArray();
if (bytes.length > field.getLengthInBytes()) {
// strip the zero prefix
if (bytes[0] == 0 && bytes.length == field.getLengthInBytes() + 1) {
// Remove it
bytes = Arrays.copyOfRange(bytes, 1, bytes.length);
} else throw new IllegalStateException("result has more than FixedLengthInBytes.");
} else if (bytes.length < field.getLengthInBytes()) {
byte[] result = new byte[field.getLengthInBytes()];
System.arraycopy(bytes, 0, result, field.getLengthInBytes() - bytes.length, bytes.length);
return result;
}
return bytes;
}
public int setFromBytes(byte[] source, int offset) {
byte[] buffer = Arrays.copyOf(source, offset, field.getLengthInBytes());
value = new BigInteger(1, buffer).mod(field.order);
return buffer.length;
}