National Yang Ming Chiao Tung University

Yu-Jia Chen

Li-Chun Wang

Shu Wang

Li Chun Wang

Wan-Ling Ho

The present invention provides a method for high-security data transmission of a blockchain. First, a source node device broadcasts a data packet to at least one destination node device and at least two cooperative node devices in the blockchain. The data packet includes a random variable and a transmission data. The cooperative node devices further forward the data packet to the destination node device. When the number of data packets received by the destination node device is equal to the random variable, the cooperative node device sends a report signal to the source node device, and the source node device broadcasts a stop broadcasting request to the blockchain, then the other node devices stop forwarding data packets to the destination node device, and finally the destination node device compares the transmission data of the data packet and selects the data packet with the same transmission data packet to store.

Method for high-security data transmission of blockchain

A method for retransmitting packet, a data server using the same and a packet retransmitting system are provided. The packet retransmitting system includes a control server, a network switch, a plurality of upper nodes, and the data server. Terminal nodes download data packets provided by the data server through the upper nodes, respectively. The data server receives missing packet reports in which the data packets correspond to the terminal nodes via the network switch, obtains network topology information related to the terminal nodes from the control server, encodes missing packets in the data packets according to the missing packet reports and the network topology information, and transmits encoded packets encoded from the missing packets to the terminal nodes via the network switch and each of the upper nodes.

Method for retransmitting packet, data server using the same, and packet retransmitting system

A location-based service system and method, which allows a location-based service server connected with a communication device and a cloud data server to perform registration authorization procedures and service authorization procedures using an international mobile subscriber identity of the communication device that cannot be easily modified or forged in the registration and service modes, so that a user may obtain a specific location-based service result via the communication device, and this distributed authentication technique reduces the risk of data theft while increasing the flexibility and convenience in obtaining services.

Growing community of inventors

Hsinchu, Taiwan

Yu-Jia Chen