Computer-processable communication authentication and validation methods and apparatuses are described according to various embodiments. In one embodiment, an authentication and validation method comprises encapsulating an untrusted payload with a header and an authenticator. The header can comprise a unique identifier and the authenticator can comprise at least a portion of a keyed-hash message authentication (HMAC) value based on the content of the header, the content of the payload, and a unique key maintained for each of one or more receiving devices.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with Government support under Contract DE-AC05-76RL01830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.