A novel elliptic curve password coprocessor

Abstract

An elliptic curve cryptographic processor, which is applied to an ECC public key cryptosystem composed of a main processor and a coprocessor, is characterized in that the main processor is composed of an embedded microprocessor, contains a point multiplication controller and a communication controller, It is connected with the elliptic curve cryptographic coprocessor through the bus and the coprocessor-specific interface. The coprocessor is a hardware controller, which contains a bus state follower, a decoding control circuit and a data path connected in a circuit, and implements the control of the main processor respectively. State tracking, to determine whether it is a coprocessor extension instruction and give a handshake signal with the main processor; translate the coprocessor extension instruction into microcode, and then translate it into a data path for data exchange and control signals for finite field operations . The invention has the advantages that it can cooperate with an embedded CPU to form an elliptic curve cryptographic system; it can flexibly realize system reconfiguration and reduce redevelopment cost; and it is easy to realize the optimal combination scheme of operation speed, chip area and power consumption.

Description

technical field [0001] The invention is mainly applied in the field of information security to ensure the confidentiality, integrity and non-repudiation of important and sensitive information. Background technique [0002] As an important problem in algebraic geometry, elliptic curve has been studied for more than 100 years, but it was not introduced into cryptography until 1986. In the early stage of its proposal, due to the lack of effective algorithms for generating the basic application parameters of elliptic curves, it has not attracted people's attention. It is worth noting that it was not until 1993 that this cryptographic system was effectively realized. Elliptic Curve Cryptosystem (ECC) is a public key cryptosystem whose security is based on the difficulty of finding discrete logarithms on elliptic curves. The reason why the ECC cryptographic algorithm has attracted people's attention is that, in addition to its theoretical significance, it also has the advantages ...

AI Technical Summary

Problems solved by technology

[0011] However, in the Elliptic Curve Cryptosystem (ECC), there are still imperfections about the optimization of the Elliptic Curve Cryptography Algorithm, the system architecture of the Elliptic Curve Cryptography Coprocessor, and the data path of the Elliptic Curve Cryptography Coprocessor. further improvement

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