} finally {
            offerEncryptoCipher(cipher);
        }
        return encrypted;
    }

    public byte[] encrypto(final byte[] data, final Key key) {
        final Cipher cipher = pollEncryptoCipher(key);
        byte[] encrypted;
        try {
            encrypted = cipher.doFinal(data);
        } catch (final IllegalBlockSizeException e) {

	if err != nil {
		return nil, err
	}
	return io.ReadAll(plaintext)
}

// Encrypt encrypts the plaintext with a key managed by KMS.
// The context is bound to the returned ciphertext.
//
// The same context must be provided when decrypting the
// ciphertext.
func Encrypt(k *kms.KMS, plaintext io.Reader, ctx kms.Context) (io.Reader, error) {
	algorithm := sio.AES_256_GCM

		}
	}

	_, encrypted = crypto.IsEncrypted(info.UserDefined)
	if !encrypted && crypto.SSEC.IsRequested(headers) && r.Header.Get(xhttp.AmzCopySource) == "" {
		return false, errInvalidEncryptionParameters
	}

	if encrypted {
		if crypto.SSEC.IsEncrypted(info.UserDefined) {
			if !(crypto.SSEC.IsRequested(headers) || crypto.SSECopy.IsRequested(headers)) {

		} 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 {
			t.Errorf("Test %d: Decryption thinks object is not encrypted but it is", i)
		}
	}
}

var decryptETagTests = []struct {
	ObjectKey  crypto.ObjectKey
	ObjectInfo ObjectInfo

	exit 1
fi

./mc encrypt info myminio/versioned-1 | grep -q "Auto encryption 'sse-kms' is enabled"
ret=$?
if [ $ret -ne 0 ]; then
	echo "BUG: expected encryption enabled after expansion"
	exit 1
fi

got_checksum=$(./mc cat myminio/versioned/dsync/drwmutex.go | md5sum)
if [ "${expected_checksum}" != "${got_checksum}" ]; then

	exit 1
fi

./mc encrypt info myminio/versioned | grep -q "Auto encryption 'sse-s3' is enabled"
ret=$?
if [ $ret -ne 0 ]; then
	echo "BUG: expected encryption enabled after expansion"
	exit 1
fi

got_checksum=$(./mc cat myminio/versioned/dsync/drwmutex.go | md5sum)
if [ "${expected_checksum}" != "${got_checksum}" ]; then

### 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
```

### Using environment (not-recommended)

// at an untrusted location.
type SealedKey struct {
	Key       [64]byte // The encrypted and authenticated object-key.
	IV        [32]byte // The random IV used to encrypt the object-key.
	Algorithm string   // The sealing algorithm used to encrypt the object key.
}

// Seal encrypts the ObjectKey using the 256 bit external key and IV. The sealed

	// MetaSealedKeyKMS is the sealed object encryption key in case of SSE-KMS
	MetaSealedKeyKMS = "X-Minio-Internal-Server-Side-Encryption-Kms-Sealed-Key"

	// MetaKeyID is the KMS master key ID used to generate/encrypt the data
	// encryption key (DEK).
	MetaKeyID = "X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id"
	// MetaDataEncryptionKey is the sealed data encryption key (DEK) received from

// with an unique key-encryption-key. Given the correct key-encryption-key the
// sealed 'ObjectKey' can be unsealed and the object can be decrypted.
//
// ## SSE-C
//
// SSE-C computes the key-encryption-key from the client-provided key, an
// initialization vector (IV) and the bucket/object path.
//
//  1. Encrypt:
//     Input: ClientKey, bucket, object, metadata, object_data