Elliptic curve encryption coprocessor suitable for RFID security communication

Abstract

The invention discloses an elliptic curve encryption coprocessor suitable for RFID security communication. The elliptic curve encryption coprocessor comprises a register array, a modular arithmetic logic unit and an ECC coprocessor instruction controller. The register array is used for storing elliptic curve parameters, the private key, calculation process data and the calculation result in the elliptic curve encryption calculation process. The modular arithmetic logic unit comprises a summing circuit, a multiplying circuit, a squaring circuit, a control unit and a register T and is used for completing add operation, multiplication and squaring operation. The ECC coprocessor instruction controller is used for sending an add operation instruction, a multiplication instruction, a squaring operation instruction and a moving instruction to the modular arithmetic logic unit, receiving the calculation result obtained through the modular arithmetic logic unit, and conducting dot doubling and dot calculation according to the result so as to complete elliptic curve point multiplication calculation. The elliptic curve encryption coprocessor has the advantages of being small in area, low in power consumption and high in security, and is suitable for an RFID tag chip.

Description

technical field [0001] The invention belongs to the technical field of radio frequency communication security encryption, and in particular relates to an elliptic curve encryption coprocessor suitable for RFID security communication. Background technique [0002] Radio frequency identification technology RFID (Radio Frequency Identification), as the most important part of the Internet of Things, not only has the fast, convenient and low-cost identification technologies such as bar codes and two-dimensional codes, but also has large data storage capacity, data re-readable, With the advantages of high efficiency, adaptability to harsh environments, and ability to identify moving targets, it can be applied to intelligent identification, positioning, tracking, and management of items. With the in-depth development and promotion of RFID technology, issues such as data interaction process security and information privacy protection have gradually attracted widespread attention fro...

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Problems solved by technology

[0006] At home and abroad, many scholars have designed elliptic encryption coprocessors. However, most of the designs only emphasize the calculation and realization of point products, without considering the actual use environment and resource requirements, such as RFID tag chips. The problem of data transmission, and the existing ellipse secret co-processing chip area and power consumption are large, which is not applicable in the actual RFID field

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