A method for implementing symmetric cryptographic services based on smart card cos

Abstract

The present invention provides a smart card COS-based symmetric cryptographic service implementation method, which encapsulates the symmetric cryptographic service in the smart card COS system into an application interface layer of the cryptographic service, an algorithm call parameter mapping layer, and an algorithm software and hardware interface layer, wherein the cryptographic service application The interface layer transmits the corresponding data to be processed and control parameters, passes the corresponding cryptographic service parameters through the algorithm call parameter mapping layer and performs security environment detection, starts the corresponding workflow of the cryptographic algorithm software and hardware interface layer, and detects whether the cryptographic service process is completed. After completing the cryptographic operation, the smart card operating system obtains the result of this cryptographic service through the application interface layer of the cryptographic service. The present invention encapsulates the symmetric cryptographic service interface in COS by adopting the idea of ​​object-oriented programming, realizes the seamless transplantation and expansion of the symmetric cryptographic service on different hardware platforms, improves the efficiency of cryptographic services, and performs centralized security management and control on the symmetric cryptographic algorithm , to enhance the security of the cryptographic algorithm used.

Description

Technical field [0001] The present invention relates to the field of chip technology, in particular to a method for implementing symmetric cryptographic services based on an operating system (Chip Operating 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, multiple cryptographic algorithm IP cores can be integrated in a single smart card chip. At the same time, with the continuous increase of the storage capacity in the smart card chip and the increase of CPU computing speed It is also possible to use software methods to implement specific newly added symmetric cryptographic algorithms. Since the application of smart cards has strong industry accessibility, and the cryptographic algorithms specified in the smart card operating system of each industry are different, for example, the social security card specifies that the symmetric cryptog...

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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