Lotte Data Communication announced on September 18 that it showcased a blockchain-based fresh food distribution service at “Blockchain Seoul 2018,” which is held at COEX from September 17 to 19.
The event is sponsored by the Fourth Industrial Revolution Forum of the National Assembly, the Ministry of Science and ICT, and the Seoul Metropolitan Government. It is attended by a large number of officials from prospective blockchain countries such as Switzerland, Estonia and Lithuania.
“Blockchain-based Cold Chain Service” introduced by Lotte Data Communications can provide safe food to customers by clearly and reliably offering information on managing foods in the whole distribution process from fresh food production to consumption.
The service uses IoT sensors to generate information on food management and status at each stage, and delivers it to blockchain users in real time. So in case a problem occurs, it is possible to swiftly track down the cause and respond.
Because information on the manufacturing and distribution process is transparently displayed, consumers can receive safe and reliable food.
The service is based on post-quantum cryptography-based cryptography technology, which was developed in July in collaboration with a team led by professor Yeum Dae-hyun of Myongji University. It is a hash function-based password authentication system that cannot be hacked by even the most advanced quantum computers.
The post-quantum cryptography has four main areas. Lotte Data Communication has chosen a hash function among them and developed a digital signature and authentication protocol.
A hash function is a function that always outputs a fixed length of 64 hexadecimal digits, regardless of the type of input data, whether it being an image or a two-hour long image. Therefore, it is very difficult to know what kind of data was entered just by looking at the output value, and thus it is excellent in security. It is the first attempt in Korea to incorporate domestic technology into a hash function-based post-quantum cryptography protocol.
The “notarized employment evaluation result” is an example of combining blockchain with Lotte’s AI recruitment system. Fairness and transparency is very important not only for a recruiting process but the results. This technology blocks forgery and corruption, so guarantees the reliability and integrity of the evaluation.
"Lotte Data Communication has strengthened R&D on blockchain, which is a promising technology for the Fourth Industrial Revolution," said Ma Yong-deuk, CEO of Lotte Data Communications. "We will continue to lead the industry through continuous investment."