// 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

        }
    }

    /**
     * Encrypt credentials to a base64 string for storage
     *
     * @param plaintext the credentials to encrypt
     * @return base64 encoded encrypted credentials
     * @throws GeneralSecurityException if encryption fails
     */
    public String encryptToString(char[] plaintext) throws GeneralSecurityException {
        byte[] encrypted = encryptCredentials(plaintext);

        final int tagLength = getAuthTagLength();
        final byte[] ciphertext = new byte[encrypted.length - tagLength];
        final byte[] authTag = new byte[tagLength];

        // Use constant-time copy operations
        constantTimeCopy(encrypted, 0, ciphertext, 0, ciphertext.length);
        constantTimeCopy(encrypted, ciphertext.length, authTag, 0, tagLength);

        return new EncryptionResult(ciphertext, authTag);

	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

	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 {

* 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.

		Key: bytes,
	})
}

// EncryptKey Encrypts and authenticates a (small) plaintext with the cryptographic key
// The plaintext must not exceed 1 MB
func (c *kesConn) EncryptKey(keyID string, plaintext []byte, ctx Context) ([]byte, error) {
	ctxBytes, err := ctx.MarshalText()
	if err != nil {
		return nil, err
	}
	return c.client.Encrypt(context.Background(), keyID, plaintext, ctxBytes)
}

        printStream.accept("  init - wizard to configure encryption (interactive only)");
        printStream.accept("  encrypt - encrypts input");
        printStream.accept("  decrypt - decrypts encrypted input");
        printStream.accept("");
    }

    @Override
    protected CommonsCliEncryptOptions copy(

	// 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
	// the KMS.
	MetaDataEncryptionKey = "X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key"

	// MetaSsecCRC is the encrypted checksum of the SSE-C encrypted object.
	MetaSsecCRC = "X-Minio-Replication-Ssec-Crc"

                    }
                }
            }
        }
        return paramMap;
    }

    /**
     * Encrypts sensitive parameter values.
     *
     * @param value the parameter string
     * @return the encrypted parameter string
     */
    public static String encrypt(final String value) {
        final StringBuilder buf = new StringBuilder();