Smart card and safety protection method thereof

Abstract

The invention discloses a smart card and a safety protection method of the smart card. The smart card comprises a smart card clock module, a data random sampling module, an attack analysis and judgment module and an attack processing module, wherein the smart card clock module is used for timing according to a received external level signal; the data random sampling module is used for determining the data statistics beginning time and the data statistics terminating time at random, and sampling the received data according to the data statistics beginning time and the data statistics terminating data; the attack analysis and judgment module is used for judging whether the smart card is attacked according to the obtained data sampled by the data random sampling module, and the corresponding data statistics beginning time and data statistics terminating time; and the attack processing module is used for carrying out anti-attack treatment when the attack analysis and judgment module judges the smart card is attacked. According to the safety protection method of the smart card, whether the smart card is attached can be more effectively judged.

Description

technical field [0001] The invention relates to the network security field of data communication, in particular to a smart card and a smart card safety protection method. Background technique [0002] With the development of e-commerce, smart cards are increasingly being applied to the field of identity authentication. A smart card is a chip card with a microprocessor, which has the advantages of safe data storage, high reliability, and easy portability. However, since smart cards are mostly passive devices, it is impossible to judge the correctness of the information source, and the existing smart cards do not have a clock function, so it is difficult to judge behaviors such as frequency and interval of use, so it is difficult to distinguish between normal behavior and abnormal behavior. There are potential security risks during business use. Contents of the invention [0003] The embodiment of the present invention provides a smart card and a security protection method...

AI Technical Summary

Problems solved by technology

However, since smart cards are mostly passive devices, it is impossible to judge the correctness of the information source, and the existing smart cards do not have a clock function, so it is difficult to judge behaviors such as frequency and interval of use, so it is difficult to distinguish between normal behavior and abnormal behavior. There are security risks in the course of business use

Images