Dynamic configurable secret key authentication system based on system-on-a-programmable-chip (SoPC)

Abstract

The purpose of the present invention is to provide a dynamic configurable key authentication system based on SoPC for the deficiencies of the prior art. This invention is mainly used in the security field, especially the system key authentication in the electronic information field. The main feature is that, using the completely self-developed SoPC chip and the development board based on the chip design, an innovative key authentication system is proposed, the key cannot be physically cloned, and the PUF circuit part combines the two current mainstream methods , and the PUF code can be changed by using the dynamic configuration of the CPU to the FPGA, giving full play to the cooperation between the CPU and the FPGA, and all the incentives can only be used once, making the key authentication extremely safe and reliable. This method has been approved by the development board. Physical verification proves that it is completely feasible and has great reference significance for the current certification system.

Description

technical field [0001] The invention is applicable to the field of information security and the field of integrated circuits, and is a brand-new system aimed at the key authentication system. Background technique [0002] In recent years, with the widespread application of physical entities such as smart cards, radio frequency identification tags, and sensor network nodes, how to effectively authenticate these physical entities is a key factor to ensure system security. However, due to the common problems of poor computing power and limited resources in such entities, there are great obstacles in the application of traditional cryptography-based authentication methods. Drawing on the currently commonly used idea of ​​personal authentication based on the unique characteristic fingerprint or iris of the human body, people have proposed a method based on the internal physical structure of the physical entity to uniquely identify a single physical entity and realize effective au...

AI Technical Summary

Problems solved by technology

However, this method has great limitations, and there will be the following problems: 1. At present, most of them use PUF circuits based on delay circuits and ring oscillators. The circuit principle is simple, and the generated keys are relatively simple.

2. By dissecting the chip, the principle of the circuit can still be found, and the attacker can reversely extract the key of the chip according to the process documents of the semiconductor manufacturer, so this method still has certain risks

3. The response of the current PUF circuit to the same stimulus is fixed. In the long run, the key may be completely copied

4. The system is simple and has poor flexibility

[0007] (1) The FPGA-based PUF circuit of this patent is complex in design and consumes a lot of resources

[0008] (2) Only FPGA is used, and key authentication is performed on FPGA, which is not safe

[0009] (3) The key has not been verified by ECC

[0010] (4) The key cannot be updated and there is a risk of being cracked

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