CPU card reader-writer and system authentication method based on full-dimensional public key authentication

Abstract

The invention belongs to the technical field of authentication security, and provides a CPU (central processing unit) card reader-writer based on full-dimensional public key authentication and a system authentication method. The CPU card reader-writer comprises a USB (universal serial bus) interface, a signal processing module, a public key module, an encryption module, a control unit and a digital signature module, wherein the signal processing module is respectively connected with the USB interface, the public key module, the digital signature module and the control unit, and the encryption module is connected with the public key module, the digital signature module and the signal processing module. The system authentication method comprises the following steps that programs are solidified in the public key module through the USB interface; a CPU card is put in a radio frequency part of the control unit; the control unit reads the user identification and the card number of the CPU card; the public key module calculates a CPU card public key; the encryption module encrypts the CPU card public key; the control unit carries out card writing on the CPU card. The CPU card reader-writer and the system authentication method have the characteristics that a full-dimensional public key authentication method is used, the secret key transmission is not needed, the security requirement in the communication process is not high, the use security is high, and the large-scale popularization and use are favorably realized.

Description

technical field [0001] The invention belongs to the technical field of authentication safety, and in particular relates to a CPU card reader-writer and a system authentication method based on full-dimensional public key authentication in the fields of insurance, traffic police, government industry, finance, transportation, commerce, aviation and the like. Background technique [0002] In the prior art, the most commonly used reader is a non-contact IC card reader, the theme of which is radio frequency identification technology as the core, and the reader mainly uses a dedicated read-write processing chip, which is used for read / write operations. The core device, its functions include modulation, demodulation, radio frequency signal generation, safety management and anti-collision mechanism; its internal structure is divided into radio frequency area and interface area: the radio frequency area contains a modem and power supply circuit, directly connected to the antenna; the i...

AI Technical Summary

Problems solved by technology

[0007] When the symmetric encryption system is used, the encryption key and the decryption key are the same or related, so the security requirements for its storage and transmission are very high. Although the security of the key system can be greatly improved, the hardware used The device performs encryption processing, and special hardware devices are used to store and transmit keys, which is not convenient for large-scale promotion and use

Moreover, the security of the key during transmission is difficult to guarantee, especially for services based on mobile communications, such as mobile payment, etc. Others can easily obtain the key during transmission through wireless technology.

Images