WIRELESS SENSOR NETWORK AND CENTRAL NODE DEVICE THEREOF

摘要

The invention is directed to a wireless sensor network system. The wireless sensor network system is adapted for a medication information security environment, and the wireless sensor network system comprising a first sensor node, a second sensor node and a central node. The first sensor node sends a request for registration and a user identification. The central node generates and stores a first set of random number and a second set of random number when receiving the request for registration and the user identification. The central node sends the first set of random number and the second set of random number to the first sensor node and the second sensor node respectively.

主权项

1. A central node device that encodes and decodes data in a wireless sensor network system, the central node device comprising:
a key generation circuit receiving a first cover-coded message, a password and a user identification, producing a plurality of pad keys by using a Padgen function operation, and outputting the pad keys, wherein the first cover-coded message is comprising a first least-bit cover-coded message and a first most-bit cover-coded message; a password decoder circuit decoding a cover-coded password to generate the password by using part of the pad keys; and a XOR operation circuit performing a XOR operation for decoding the first most-bit cover-coded message and the first least-bit cover-coded message to obtain a first most-bit message and a first least-bit message, encoding the first most-bit message and the first least-bit message, and outputting a second most-bit cover-coded message and a second least-bit cover-coded message.