An electronic device includes: a radio for reception of a broadcasted signal having a message, at least a part of the message has been encrypted with a first key, wherein the first key has been encrypted with a second key to result in an encrypted first key; an authenticator configured for authentication of the message by decrypting the encrypted first key with a third key, and decrypting the at least a part of the message with the first key; and a processing unit coupled to the radio; wherein the second key has a value that is different from a value of the third key; and wherein the message comprises (1) a first payload broadcasted with the encrypted first key, and (2) a second payload broadcasted without the encrypted first key.