*
     * ```java
     * TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
     * TrustManagerFactory.getDefaultAlgorithm());
     * trustManagerFactory.init((KeyStore) null);
     * TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
     * if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {

[[config_cache:secrets:configuring_encryption_key]]
=== Providing an encryption key via `GRADLE_ENCRYPTION_KEY` environment variable

By default, Gradle automatically generates and manages the encryption key as a Java keystore stored under the `<<directory_layout.adoc#dir:gradle_user_home,GRADLE_USER_HOME>>` directory.