Data security is an important issue in the digital and big data era as it is today. Many large companies have important data that contains many secrets. Leakage of these data can result in the collapse of the company. The solution that appears to secure this data is to utilize data encryption. The encryption process is changing data encoded with certain keys. To know what data is encrypted we need the key. The process of returning encrypted data so that we can see it is called decryption. This downstream combines stream keys encryption using graph labeling. These keys are then applied to modify Vigenere's encryption mechanism.

This time the Colloquium was filled by Drs. Antonius Cahya Prihandoko, M.App.Sc., Ph.D. which explains about stream keys generation using graph labeling (27/10). He is a lecturer at the Faculty of Computer Science, University of Jember. "The field of cryptography is closely related to abstract algebra. There are modulo calculations that are commonly used in abstract algebra," explained the man who graduated from Information Technology James Cook Australia. Antonius' research idea arose because of the complexity of making key combinations if done manually. So by bringing these keys into graph form, we can label a number of vertices so that the process of finding this key combination becomes easier. In the future, Antonius also hopes to be able to join research again with PUI PT Combinatorics and Graph in the field of Graph Neural Networks.

Link youtube webinar: (312) Colloquium with Drs. Antonius Cahya P., M.App.Sc, Ph.D - YouTube