docs: public static String getAlgorithmAfterWith(String algorithm) {
  		Assert.notNull(algorithm, "algorithm must be not null !");
  		int indexOfWith = StrUtil.lastIndexOfIgnoreCase(algorithm, "with");
  		if (indexOfWith > 0) {
  			algorithm = StrUtil.subSuf(algorithm, indexOfWith + "with".length());
  		}
  		if ("ECDSA".equalsIgnoreCase(algorithm) || "SM2".equalsIgnoreCase(algorithm)) {
  			algorithm = "EC";
  		}
  		return algorithm;
  	}