toHex method

String toHex([
  1. bool isCompressed = true
])

Encode point to hex string.

Implementation

String toHex([bool isCompressed = true]) {
  // convert to 2d xy affine point
  final affinePointValue = affinePoint();
  final (BigInt x, BigInt y) = (affinePointValue.x, affinePointValue.y);
  // 0x02, 0x03, 0x04 prefix
  final head = isCompressed ? ((y & BigInt.one) == BigInt.zero ? '02' : '03') : '04';
  // prefix||x and ||y
  return head + Utilities.bigIntToHex(x) + (isCompressed ? '' : Utilities.bigIntToHex(y));
}