/**
     * Encrypts the given data with the specified key.
     *
     * @param data
     *            the data to encrypt
     * @param key
     *            the key to use for encryption
     * @return the encrypted data
     */
    public byte[] encrypt(final byte[] data, final Key key) {
        final Cipher cipher = pollEncryptoCipher(key);
        byte[] encrypted;
        try {

        cipher.setKey("mySecretKey");

        final byte[] original = "Hello World".getBytes();
        final byte[] encrypted = cipher.encrypto(original);
        final byte[] decrypted = cipher.decrypto(encrypted);

        assertThat(encrypted, is(not(original)));
        assertArrayEquals(original, decrypted);
    }

    @Test
    @SuppressWarnings("deprecation")

     * Parses the role set from a string.
     * @param value The string to parse.
     * @param encrypted Whether the string is encrypted.
     * @param roleSet The set of roles.
     */
    protected void parseRoleSet(final String value, final boolean encrypted, final Set<String> roleSet) {
        String rolesStr = value;
        if (encrypted && cipher != null) {
            try {
                rolesStr = cipher.decryptoText(rolesStr);

        assertNotNull(cryptographer);

        String plainText = "Hello, World!";
        String encrypted = cryptographer.encrypt(plainText);
        assertNotNull(encrypted);
        assertFalse(plainText.equals(encrypted));

        String decrypted = cryptographer.decrypt(encrypted);
        assertEquals(plainText, decrypted);
    }

    @Test

        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "";
        expect = "";
        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "\n";
        expect = "";
        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "=";
        expect = "unknown.1=";
        assertEquals(expect, ParameterUtil.encrypt(value));

        value = "=1\n=";

            @Override
            public String encrypt(String plainText) {
                return "encrypted:" + plainText;
            }

            @Override
            public String decrypt(String cryptedText) {
                return cryptedText.startsWith("encrypted:") ? cryptedText.substring("encrypted:".length()) : cryptedText;
            }
        };

  ) {
    enum class Type {
      Handshake,
      Plaintext,
      Encrypted,
      Setup,
      Unknown,
    }

    val type: Type
      get() =
        when {
          message == "adding as trusted certificates" -> Type.Setup
          message == "Raw read" || message == "Raw write" -> Type.Encrypted
          message == "Plaintext before ENCRYPTION" || message == "Plaintext after DECRYPTION" -> Type.Plaintext

        Set<String> roleSet;
        boolean encrypted;
        String value;

        encrypted = false;
        value = "";
        roleSet = decodedRoleList(roleQueryHelperImpl, value, encrypted);
        assertEquals(0, roleSet.size());

        encrypted = false;
        value = "role1";
        roleSet = decodedRoleList(roleQueryHelperImpl, value, encrypted);
        assertEquals(0, roleSet.size());

├── collection/  # Enhanced collections (LruHashMap, CaseInsensitiveMap)
├── concurrent/  # Concurrency utilities
├── convert/     # Type conversion (*ConversionUtil)
├── crypto/      # Cipher & encryption (CachedCipher)
├── exception/   # Runtime exception wrappers
├── io/          # I/O & resource utilities
├── jar/         # JAR file utilities
├── lang/        # Reflection & language utilities

          // Consuming server Finished handshake message
          // Produced ClientHello handshake message
          //
          // Raw write
          // Raw read
          // Plaintext before ENCRYPTION
          // Plaintext after DECRYPTION
          val message = record.message
          val parameters = record.parameters