Access Control System Pair* Safety Protection

The supervision area is an important place for detaining criminals. Therefore, the access control system in the supervision area is an extremely important part of the prison security system. It has changed passive monitoring methods such as TV monitoring and anti-theft alarms, and it has been verified by active identity through the main channel. Controlling and preventing unauthorized persons such as criminals from entering and exiting through the normal channels effectively improved the efficiency of the managers and the safety of the supervision areas.

The prison access control system is composed of two parts, the AB gate system at the entrance and exit of the supervision area and the department prohibition system at the supervision area. It adopts the CPU algorithm network access control system of the country secret algorithm and can be managed through the internal LAN of the prison and can be operated independently.

Due to the serious security loopholes existing in the common IC card access control systems that are currently widely used, the National Password Administration issued a “Letter to assist with the IC card system password management work” to the central and state agencies and sent them to the provinces. (District, City) Password Management Department issued the "Circular on Strengthening the IC Card System Password Management Work" and the "Guidance on the Application of Key Access System Passwords" to transform and upgrade the important access control systems that have been built, and the safety of new important electronic access control systems. The specific requirements were put forward, and related password application methods and method guides were provided for achieving this safety requirement.

Under the guidance of the National Cryptography Administration, the company has put forward specific technical solutions for the prison access control system, and the important access control system that meets the national password management requirements adopts the CPU card secret algorithm security scheme.

The key products of the technical solution are the non-contact logic encryption card chip supporting the SM7 block cipher algorithm and the SM7/SM1 security module in the access control.

System Configuration The technical solution uses a non-contact logical encryption card based on the SM7 algorithm as the access control card.

Overview of cryptosystems An important access control system based on China's SM7 cryptographic algorithm involves the application subsystem, key management, and card issuance subsystems.

The SM7 block encryption algorithm specified by the National Cryptography Administration Bureau is used for key distribution to realize one-card-one secret; the SM7 block encryption algorithm specified by the National Cryptography Administration Bureau is used to identify the identity between the access control card and the access control reader.

The application subsystem subsystem consists of an access control card, an access control reader, and a back-end management system. The password security protection is provided to the system through the cryptographic modules in each device.

A PSAM card is placed in each access control card reader, and a security algorithm is used to encrypt the card and the reader. The PSAM card is used to store keys and encryption algorithms and can complete mutual authentication, password verification and encryption in transactions. Decryption operation. When the card is issued, the master key is stored in the PSAM card. The master key in the SAM card is used to encrypt the feature byte of the user card to generate a subkey, and the subkey is injected into the user card. Make the subkeys in each user card different.

Key management is the key to system security. Key management systems include key generation, distribution, use, storage, backup, and destruction. The prison management department can generate and manage application keys through the key management software and complete the initialization of the CPU card on its own, ensuring that the prison party has key management and card issuing autonomy.

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