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In the emergency broadcast system (or emergency alert system) which aims to broadcast a warning information immediately in time of emergency such as a natural or civil disaster, computational power-restricted devices such as, pocket terminals and sensors need to instantly and securely verify correctness and integrity of the received message packets. Though a lot of broadcast authentication systems were proposed, most of them require relatively high computation cost. In this paper, the authors propose a new lightweight broadcast authentication protocol McSBA based on McEliece signature. It can be quickly verified with a tiny computation cost, applicable on power-restricted devices.
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