Our lives are dazzling and colorful due to technology, and in the smart industry, because of the cards used by consumers, they also look different. With the development of smart IC card technology, there is a higher requirement for the storage and encryption characteristics of the card body itself. The traditional MIFARE1 card has been gradually replaced by a smart IC card with a higher encryption technology, and the CPU card is one of the typical representatives. Applying the CPU card to the "one card" system can make the system have higher function scalability and greatly improve the security of use. And the card body itself has a larger storage space and a faster reading speed. Then upgrade the existing system software to complete the integration of the system and the CPU card.
I. CPU card overview
The CPU card, also called a smart card, is an IC card with a microprocessor chip, and the card structure is similar to a microcomputer system. The integrated circuit inside the card is like a computer motherboard. It integrates a central processing unit (CPU), EEPROM, random access memory (RAM), read-only memory (ROM), and has an on-chip operating system in the read-only memory, which is COS. . Some in-card chips also integrate an encryption computing coprocessor to improve security and speed.
The CPU card user storage space adopts a directory and file management mode similar to the computer operating system, and is more flexible when the function is expanded, and the storage space can be allocated as needed. When the microprocessor of the card body runs with its own operating system, it can perform hierarchical encryption and decryption. The user needs to perform multiple password authentication when performing card operation, which improves the security of the system. Regardless of the storage capacity of the user space or the security encryption feature, the CPU card can adapt to the needs of current development. The CPU card can be applied to many fields such as finance, insurance, police, government, etc. It has the characteristics of multi-card use and has been certified by the People's Bank of China and the State Commerce Commission.
2. Comparison of MIFARE1 card and CPU card characteristics
For the CPU card, it makes up for many of the shortcomings of MIFARE1. What is the difference between it and the MIFARE1 card? What advantages does the CPU card have? Here is a brief introduction:
(1). Storage space and partition
The MIFARE1 card has very limited storage space and adopts fixed sector and block management.
The CPU card storage space is several times that of the MIFARE1 card, which fully meets the current storage needs. It uses a file storage method similar to the operating system, and the design is very flexible.
(2). Key length
The MIFARE1 card uses a 6-byte password and is sector-controlled.
The CPU card uses a 16-byte key, and can establish multi-level partitions according to actual needs, realizes combined control of multi-level partition multi-level keys, and improves security in use.
(3). Encryption authentication algorithm
The MIFARE1 card uses a proprietary, undisclosed hardware logic algorithm that has been cracked.
The CPU card uses universal open software or hardware acceleration algorithms and is customizable and meets financial standards.
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