Harshavardhana <******@****.***> 1699046298 -0700

        InvertibleCryptographer cookieCipher = new InvertibleCryptographer("AES", "1234567890123456", null) {
            @Override
            public String encrypt(String plainText) {
                return "encrypted:" + plainText;
            }

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

    }

    /// Encrypt a block of bytes.
    /**
     * Encrypts an 8-byte block using DES
     * @param clearText the 8-byte plaintext block
     * @param cipherText the output 8-byte ciphertext block
     */
    public void encrypt(final byte[] clearText, final byte[] cipherText) {
        encrypt(clearText, 0, cipherText, 0);
    }

    /// Decrypt a block of bytes.
    /**

        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=";

* 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.

        this.secureRandom.nextBytes(nonce);
        return nonce;
    }

    /**
     * Encrypt an SMB2 message with constant-time operations
     *
     * @param message
     *            plaintext message to encrypt
     * @param sessionId
     *            session identifier
     * @return encrypted message with transform header
     * @throws CIFSException

        byte[] salt = storage.getSalt();

        // Encrypt with first storage
        byte[] encrypted = storage.encryptCredentials(plaintext);

        // Create new storage with same salt
        SecureCredentialStorage storage2 = new SecureCredentialStorage(masterPassword.clone(), salt);

        try {
            // Should be able to decrypt with same salt and password

### Using `mc encrypt` (recommended)

MinIO automatically encrypts all objects on buckets if KMS is successfully configured and bucket encryption configuration is enabled for each bucket as shown below:

```
mc encrypt set sse-s3 myminio/bucket/
```

Verify if MinIO has `sse-s3` enabled

```
mc encrypt info myminio/bucket/
Auto encryption 'sse-s3' is enabled
```

* Nginx
* HAProxy

## Let's Encrypt

Vor Let's Encrypt wurden diese **HTTPS-Zertifikate** von vertrauenswürdigen Dritten verkauft.

Der Prozess zum Erwerb eines dieser Zertifikate war früher umständlich, erforderte viel Papierarbeit und die Zertifikate waren ziemlich teuer.

Aber dann wurde **<a href="https://letsencrypt.org/" class="external-link" target="_blank">Let's Encrypt</a>** geschaffen.

        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() {