| Summary: | 碩士 === 國防大學 === 資訊管理學系 === 107 === In modern society, nearly every aspect of modern life is performed in remote connection environments, and this includes public transportation, shopping, healthcare, homes, and games. In order to make the participants in the network can legally access the service according to its authority, the identity authentication mechanism plays an important role in the connection and communication protocol. Common identity authentication mechanisms are verified by factors such as authentication tables, smart cards, dynamic IDs, and biometrics. The smart cards are widely used in identity authentication due to its characteristic of lightweight and increasing computational capabilities. During the secret communication process of accessing service, the session key is the only tool for communication and shared in an insecure environment. This research will design a mechanism that the session key can be shared without network and enabling the two parties can obtain the same key to enhance identity authentication and secret communication. The contributions of this research are as follows: we (1) improved the unpredictability of encryption and decryption systems, (2) constructed a highly elastic encryption mechanism that meets the requirements of information security management, and (3) created a synchronous encryption system.
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