byte[] encrypted = storage.encryptCredentials(plaintext);
        assertNotNull(encrypted, "Encrypted long password should not be null");
        assertTrue(encrypted.length > plaintext.length, "Encrypted data should be larger due to IV and auth tag");

        char[] decrypted = storage.decryptCredentials(encrypted);
        assertArrayEquals(plaintext, decrypted, "Decrypted long password should match original");

        long sessionId = 0x123456789ABCDEF0L;

        // When - Encrypt
        byte[] encrypted = context.encryptMessage(plaintext, sessionId);

        // Then - Verify encrypted message structure
        assertNotNull(encrypted, "Encrypted message should not be null");
        assertTrue(encrypted.length > plaintext.length, "Encrypted message should be larger than plaintext");

        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);
    }

    public void test_invertibleCryptography_withEmptyString() {

		return data, nil
	}
	if _, encrypted := crypto.IsEncrypted(o.UserDefined); encrypted {
		decrypted, err := o.metadataDecrypter(h)("object-checksum", data)
		if err != nil {
			return nil, err
		}
		data = decrypted
	}
	return data, nil
}

// metadataEncryptFn provides an encryption function for metadata.
// Will return nil, nil if unencrypted.

	for i, test := range decryptObjectMetaTests {
		if encrypted, err := DecryptObjectInfo(&test.info, test.request); err != test.expErr {
			t.Errorf("Test %d: Decryption returned wrong error code: got %d , want %d", i, err, test.expErr)
		} else if _, enc := crypto.IsEncrypted(test.info.UserDefined); encrypted && enc != encrypted {
			t.Errorf("Test %d: Decryption thinks object is encrypted but it is not", i)
		} else if !encrypted && enc != encrypted {

    /**
     * Encrypts the given data.
     *
     * @param data
     *            the data to encrypt
     * @return the encrypted data
     */
    public byte[] encrypto(final byte[] data) {
        final Cipher cipher = pollEncryptoCipher();
        byte[] encrypted;
        try {
            encrypted = cipher.doFinal(data);
        } catch (final IllegalBlockSizeException e) {

        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());

	exit_1
fi

# Stat the SSEC objects from source site
echo "Stat minio1/test-bucket/encrypted"
./mc stat --no-list minio1/test-bucket/encrypted --enc-c "minio1/test-bucket/encrypted=${TEST_MINIO_ENC_KEY}" --insecure --json
stat_out1=$(./mc stat --no-list minio1/test-bucket/encrypted --enc-c "minio1/test-bucket/encrypted=${TEST_MINIO_ENC_KEY}" --insecure --json)
src_obj1_etag=$(echo "${stat_out1}" | jq '.etag')

* Nginx
* HAProxy

## Let's Encrypt { #lets-encrypt }

Before Let's Encrypt, these **HTTPS certificates** were sold by trusted third parties.

The process to acquire one of these certificates used to be cumbersome, require quite some paperwork and the certificates were quite expensive.

But then **<a href="https://letsencrypt.org/" class="external-link" target="_blank">Let's Encrypt</a>** was created.

1a) Send encrypted data key and master key ID to KMS.
1b) Receive decrypted data key.
2)  Decrypt encrypted object key with the KEK derived from the data key.
3a) Receive new plain data key from the KMS using the master key ID of the server config.
3b) Receive encrypted form of the data key from the KMS.
4)  Derive a new KEK from the new data key and re-encrypt the OEK with it.