}

    private
    fun newEncryptionSession(): EncryptionAlgorithm.Session =
        encryptionAlgorithm.newSession(secretKey)

    private
    fun secretKeySource(kind: EncryptionKind): SecretKeySource =
        when (kind) {
            EncryptionKind.KEYSTORE ->
                KeyStoreKeySource(
                    encryptionAlgorithm = encryptionAlgorithm.algorithm,