//     - enc_object_data := DAREv2_Enc(ObjectKey, object_data)
//     -        metadata <- IV
//     -        metadata <- SealedKey
//     Output: enc_object_data, metadata
//
//  2. Decrypt:
//     Input: ClientKey, bucket, object, metadata, enc_object_data
//     -          IV <- metadata
//     -   SealedKey <- metadata

unique, randomly generated secret key per object also known as, Object Encryption Key ([OEK](#oek)). Neither the client-provided SSE-C key nor the KMS-managed key is directly used to en/decrypt an object. Instead, the OEK is stored as part of the object metadata next to the object in an encrypted form. To en/decrypt the OEK another secret key is needed also known as, Key Encryption Key ([KEK](#kek)).

The MinIO server runs a key-derivation algorithm to generate the KEK using a pseudo-random...

        // Encrypt with new method, decrypt with old method
        @SuppressWarnings("deprecation")
        final String encrypted1 = cipher.encryptText(original);
        @SuppressWarnings("deprecation")
        final String decrypted1 = cipher.decryptoText(encrypted1);
        assertThat(decrypted1, is(original));

        // Encrypt with old method, decrypt with new method

		Plaintext:  plaintext,
		Ciphertext: ciphertext,
	}, nil
}

// Decrypt decrypts req.Ciphertext. The key name req.Name must match the key
// name of the secretKey.
//
// Decrypt supports decryption of binary-encoded ciphertexts, as produced by KES
// and MinKMS, and legacy JSON formatted ciphertexts.
func (s secretKey) Decrypt(_ context.Context, req *DecryptRequest) ([]byte, error) {
	if req.Name != s.keyID {

	buffer.Write(metadata)

	return io.MultiReader(
		&buffer,
		stream.EncryptReader(plaintext, nonce, nil),
	), nil
}

// Decrypt decrypts the ciphertext using a key managed by the KMS.
// The same context that have been used during encryption must be
// provided.
func Decrypt(k *kms.KMS, ciphertext io.Reader, associatedData kms.Context) (io.Reader, error) {
	const (
		MaxMetadataSize = 1 << 20 // max. size of the metadata

)

const (
	// SealAlgorithm is the encryption/sealing algorithm used to derive & seal
	// the key-encryption-key and to en/decrypt the object data.
	SealAlgorithm = "DAREv2-HMAC-SHA256"

	// InsecureSealAlgorithm is the legacy encryption/sealing algorithm used
	// to derive & seal the key-encryption-key and to en/decrypt the object data.
	// This algorithm should not be used for new objects because its key derivation

        byte[] decrypted = KerberosEncData.decrypt(data, key, KerberosConstants.DES_ENC_TYPE);
        assertNotNull(decrypted);
        // With dummy data, we can't verify the content, just that it decrypts without error
        // and returns a result of the expected size.
        assertEquals(data.length - 24, decrypted.length);
    }

    /**
     * Test decrypt with an unsupported encryption type.
     */
    @Test

        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

    }

    /// 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.
    /**

	if err != nil {
		t.Fatalf("Failed to generate key: %v", err)
	}
	plaintext, err := KMS.Decrypt(t.Context(), &DecryptRequest{
		Name:       key.KeyID,
		Ciphertext: key.Ciphertext,
	})
	if err != nil {
		t.Fatalf("Failed to decrypt key: %v", err)
	}
	if !bytes.Equal(key.Plaintext, plaintext) {