A method, an apparatus, and a computer program product for wireless communication are provided in connection with providing additional security for communication of sensitive information within a LTE based WWAN. In one example, a communications device is equipped to generate a keystream based on a mobility management entity-user equipment (MME-UE) key, a non-access stratum (NAS) message count value, and a contextual string associated with an informational element, and the contextual information, and cryptographically process the informational element using the generated keystream. In such an example, the communications device may be a UE, a MME, etc.