code: public static byte[] pubBytesWithoutFormat(ECPoint pubPoint) {
          final byte[] pubBytes = pubPoint.getEncoded(/* uncompressed */ false);
          return Arrays.copyOfRange(pubBytes, 1, pubBytes.length);
      }
docs: Compute the encoded X, Y coordinates of a public point.
  
  This is the encoded public key without the leading byte.
  
  @param pubPoint
  a public point
  @return 64-byte X,Y point pair