Packet transmission device, packet reception device, packet transmission program, and packet reception program

摘要

The edit data generation unit (240) generates the Xth edit data by connecting the message authentication code of the X-1th data block to the message authentication code of the Xth data block. The additional data generation unit (250) generates a message authentication code of the Xth edit data, and extracts a part of the message authentication code of the Xth edit data as the Xth additional data. A packet generator (260) generates an Xth packet including the Xth data block and the Xth additional data. The packet transmission unit (270) transmits the Xth packet.