@Override
    public String getEncryptionKeySetting() {
        return "cas.authn.saml-idp.metadata.redis.crypto.encryption.key";
    }
This is {@link RedisSamlIdPMetadataCipherExecutor}.

@author Misagh Moayyed
@since 6.4.0
support/cas-server-support-saml-idp-metadata-redis/src/main/java/org/apereo/cas/support/saml/idp/metadata/RedisSamlIdPMetadataCipherExecutor.java