Method for achieving symmetric cipher service based on intelligent card chip operating system (COS)

Abstract

The invention provides a method for achieving symmetric cipher service based on an intelligent card chip operating system (COS). The symmetric cipher service in the intelligent card COS is packaged into an application interface layer of cipher service, an algorithm call parameter mapping layer and an algorithm software and hardware interface layer, wherein the application interface layer of the cipher service transfers corresponding data to be processed and control parameters, and the algorithm call parameter mapping layer is used for transferring corresponding cipher service parameters and performing secure environment detection. Corresponding working processes of the algorithm software and hardware interface layer are started, detection on whether cipher service processes are completed is performed, and the intelligent card operation system obtains results of the current cipher service through the application interface layer of the cipher service if crypto-operation is completed. According to the method, the object-oriented programming design concept is adopted, the symmetric cipher service in the COS is packaged, seamless transplantation and extension of the symmetric cipher service on different hardware platforms can be achieved, efficiency of the cipher service is improved, centralized safety control is performed on symmetric cipher algorithm, and safety in using of the cipher algorithm is improved.

Description

technical field [0001] The present invention relates to the field of chip technology, in particular to a method for implementing a symmetric cryptographic service based on an operating system (ChipOperating System, COS) in a smart card. Background technique [0002] At present, with the advancement of microelectronics technology and the popularization and application of SoC chip design technology, a variety of cryptographic algorithm IP cores can be integrated in a single smart card chip. At the same time, with the continuous increase of storage capacity and CPU computing speed in smart card chips. , it is also possible to implement a specific newly added symmetric encryption algorithm by software. Since the application of smart cards has strong industry access, and the cryptographic algorithms specified in the smart card operating system of each industry are different, such as the social security card stipulates that the symmetric cryptographic algorithm adopts the domestic...

AI Technical Summary

Problems solved by technology

With the increase of multi-purpose cards, the interfaces of symmetric cryptographic algorithms will also increase accordingly, which not only takes up valuable storage resources of smart cards, but also brings about low efficiency of cryptographic services, and also hinders the seamlessness of COS between different hardware platforms. Transplantation and expansion of new cryptographic algorithms bring security risks in algorithm management to COS systems where multiple cryptographic algorithms are applied

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