public SM2() {
		this(null, (byte[]) null);
	}
@Test
	public void issueIA824PTest() {
		assertThrows(DataLengthException.class, () -> {
			SM2 sm2 = SmUtil.sm2();
			String emptyStr = "";
			sm2.encryptHex(emptyStr, KeyType.PublicKey);
		});
	}