How to use

org.keycloak.adapters.rotation.HardcodedPublicKeyLocator

constructor

  /**
   * Finds the keycloak deployment bean and applies a hardcoded public key locator using the 
   * provided public key.
   */
  private void applyHardcodedPublicKey(PublicKey publicKey)
  {
    KeycloakDeployment deployment  = (KeycloakDeployment)childApplicationContextFactory.getApplicationContext().
          getBean(DEPLOYMENT_BEAN_NAME);
    HardcodedPublicKeyLocator publicKeyLocator = new HardcodedPublicKeyLocator(publicKey);
    deployment.setPublicKeyLocator(publicKeyLocator);
  }
}

try {
  realmKey = PemUtils.decodePublicKey(realmKeyPem);
  HardcodedPublicKeyLocator pkLocator = new HardcodedPublicKeyLocator(realmKey);
  deployment.setPublicKeyLocator(pkLocator);
} catch (Exception e) {