Security co-processor of bank smart card chip based on domestic algorithms

Abstract

The invention disclosed a security co-processor of a bank smart card chip based on domestic algorithms. The security co-processor comprises a storage unit, a control module, an SM1 algorithm module, an SM2 algorithm module, an SM3 algorithm module, and a modular multiplication module, wherein the storage unit is used for enabling and controlling the SM1 algorithm module, the SM2 algorithm module, the SM3 algorithm module, and the modular multiplication module, and inputting and outputting data. When one function module of the SM1 algorithm module, the SM2 algorithm module, the SM3 algorithm module, and the modular multiplication module is enabled, a data and address output end is used as an input end of the control module, and data is written into a specified address space of the storage unit through the output end of the control module according to an address. A comprehensive hardware solidification of state encryption SM1, SM2, SM3 and sub-functions is completed by adopting the security co-processor of the invention which has the characteristics of faster speed and higher security compared with a software method and a software-hardware combination method.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a security coprocessor of a bank smart card chip based on domestic algorithms SM1, SM2 and SM3. Background technique [0002] At present, domestic bank cards mainly use magnetic stripe cards, but they have obvious shortcomings: small amount of information storage, easy to read and forge magnetic stripes, poor confidentiality, and criminals can easily steal the data on the magnetic stripes and copy them at the same time. The low cost of counterfeiting cards has led to frequent occurrence of various crimes involving the security of magnetic stripe cards, and the security issues of bank cards have increasingly aroused the concern of cardholders. [0003] The National Secret SM1 SM2 SM3 algorithm is an algorithm independently developed by the State Cryptography Administration to ensure national information security. The National Secret SM1 algorithm is a symmetric algor...

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Problems solved by technology

[0002] At present, domestic bank cards mainly use magnetic stripe cards, but they have obvious shortcomings: small amount of information storage, easy to read and forge magnetic stripes, poor confidentiality, and criminals can easily steal the data on the magnetic stripes and copy them at the same time. The low cost of counterfeit cards has led to frequent occurrence of various crimes involving the security of magnetic stripe cards, and bank card security issues have increasingly aroused cardholders' concerns

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