1. An apparatus comprising: an interface control circuit configured to receive a message including a cryptographic keyword and a policy value, wherein the policy value includes one or more data bits indicative of one or more policies that define allowable usage of the cryptographic keyword; and a security circuit configured to: extract the cryptographic keyword and the policy value from the message; and apply at least one policy of the one or more policies to usage of the cryptographic keyword in response to a determination that an authentication of the message succeeded.