public void SetLoginInformationCategoryTest()
        {
            // Arrange
            byte[] derivedKey = new byte[16] {
                111, 222, 31, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 104, 15, 16
            };

            SymmetricKeyAlgorithm ska = SymmetricKeyAlgorithm.GenerateNew(SymmetricEncryptionAlgorithm.AES_CTR);

            LoginInformationSecret loginInformationSecret = new LoginInformationSecret(loginInformation, "does not matter", ska, derivedKey);

            string newCategory = "Finance";

            // Act
            bool   shouldBeTrue = loginInformationSecret.SetCategory(newCategory, derivedKey);
            string loginInformationCategory2 = loginInformationSecret.GetCategory(derivedKey);
            bool   shouldBeFalse             = loginInformationSecret.SetCategory(newCategory, new byte[] { 13, 129, 0, 99, 134, 255, 0 });

            // Assert
            Assert.IsTrue(shouldBeTrue);
            Assert.IsFalse(shouldBeFalse);
            Assert.IsFalse(string.IsNullOrEmpty(loginInformationCategory2));
            Assert.AreEqual(newCategory, loginInformationCategory2);
        }