Abstract
Body area network (BAN) is a key technology of solving telemedicine, where protecting security of vital signs information becomes a very important technique requirement. The traditional encryption methods are not suitable for BANs due to the complex algorithm and the large consumption. This paper proposes a new encryption method based on the QRS complex of the ECG signal, which adopts the vital signs from the BAN system to form the initial key, utilizes the LFSR (Linear Feedback Shift Register) circuit to generate the key stream, and then encrypts the data in the BANs. This new encryption method has the advantages of low energy consumption, simple hardware implementation, and dynamic key updating.
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