code: public static PublicKey decodeECPoint(String encode, String curveName) {
  		return BCUtil.decodeECPoint(encode, curveName);
  	}
docs: 解码恢复EC压缩公钥,支持Base64和Hex编码,（基于BouncyCastle）<br>
  见：https://www.cnblogs.com/xinzhao/p/8963724.html
  
  @param encode 压缩公钥
  @param curveName EC曲线名
  @since 4.4.4