public CipherService getCipherService() {
        return cipherService;
    }
Returns the {@code CipherService} to use for encrypting and decrypting serialized identity data to prevent easy
inspection of Subject identity data.
<p/>
Unless overridden by the {@link #setCipherService} method, the default instance is an {@link AesCipherService}.

@return the {@code Cipher} to use for encrypting and decrypting serialized identity data to prevent easy
inspection of Subject identity data
core/src/main/java/org/apache/shiro/mgt/AbstractRememberMeManager.java