SamlKeyStore.java

@Bean
public KeyManager keyManager() {
    DefaultResourceLoader loader = new DefaultResourceLoader();
    Resource storeFile = loader.getResource("classpath:/saml/samlKeystore.jks");
    String storePass = "secure";
    Map<String, String> passwords = new HashMap<>();
    passwords.put("samuraj", "secure");
    String defaultKey = "samuraj";

    return new JKSKeyManager(storeFile, storePass, passwords, defaultKey);
}