With modern password analysis level,chip processing power unceasing enhancement,the advanced encryption standard AES algorithm can be widely used in various fields.This paper introduces the development of AES encryption algorithm and realization process,and discusses its application in information security.

licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract: Supervisory control and data acquisition systems (SCADAs) play an important role in supervising and controlling industrial production with the help of programmable logic controllers (PLCs) in industrial control systems (ICSs). A PLC receives the control information or program from a SCADA to control the production equipment and feeds the production data back to the SCADA. Once a SCADA is controlled by an attacker, it may threaten the safety of industrial production. The lack of security protection, such as identity authentication and encryption for industrial control protocols, increases the potential security risks. In this paper, we propose a PLC protection system combined with a monitor between a SCADA and a PLC and a physically separated monitoring station. By using the PLC protection system, identity verification and command verification are separated, and both the identity of the operator and the corresponding commands are recorded. Experiments show that even if the SCADA is controlled by an attacker, our system could still protect the PLC in the field and record the identity of the key command operator, which facilitates the tracing and forensics of malicious activities.

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AES Encryption Algorithm Analysis and the Application in Information Security

PLC Protection System Based on Verification Separation

With the continuous development of the Internet and the popularization of storage devices, network disk storage is increasingly favored by many enterprises and individual users due to its simplicity and convenience. At the same time, With the increase of data stored on the network disk, its data security and reliability also become an important issue. In the research of the secure storage system based on multi-network disk, we propose a block-based file encryption method and a block-based erasure code-based coding method to ensure the security and reliability of data stored in the network disk. Finally, the improved multi-cloud storage-based block erasure coding algorithm is experimentally tested and compared with related experiments.

Research on Multiple Network Disk Storage

With the high integration of informatization and industrialization, the degree of intelligence and automation of the secondary system of substations has been continuously enhanced. While enjoying the convenience, we also need to face the challenges and threats brought by the Internet. Given the confidentiality, integrity, and other security threats that the secondary system applications or tools may face during the calculation and transmission process, the safety reinforced terminal protection technology based on the USB interface has become a research hotspot. Although traditional safety reinforced equipment is easy to produce, the algorithms in it have been specified by the manufacturer and downloaded to the corresponding equipment. Considering that the security requirements of different scenarios are quite different, and different users have multi-level security requirements, the AVR microcontroller is programmed through the Arduino IDE platform, and a safety-reinforced terminal device with a customizable encryption algorithm is designed and implemented, which not only realizes functions such as identity authentication and content encryption, but also meets the personalized needs of users’ independent choices, and improves the security and controllability of the entire secondary system. After the test, the usability and robustness of the terminal are preliminarily proved.

AES Encryption Algorithm Analysis and the Application in Information Security

Citations

PLC Protection System Based on Verification Separation

Research on Multiple Network Disk Storage

Realization of Safety Reinforced Terminal Equipment for Secondary System of Substation

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