Method for realizing cloud locking of sensitive data on basis of reconstruction technology
A sensitive data, cloud technology, applied in the direction of code reconstruction, digital data protection, electronic digital data processing, etc., can solve the problems that can not completely avoid various attacks of malicious applications, data storage in the terminal, data leakage, mobile phone loss, etc. , to achieve the effect of solving sensitive data leakage
Active Publication Date: 2016-02-03
PEKING UNIV
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Problems solved by technology
This type of technology only solves the problem of data loss caused by lost or damaged mobile phones, but does not solve the problem of data leakage caused by data stored in the terminal
Even if the existing data isolation is used for protection, since the data is still stored on the mobile phone, no matter how good the data encryption and isolation mechanism is, it cannot completely avoid various attacks from malicious applications
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[0042] This section presents the implementation of cloud-terminal data fusion in Android applications. The following takes a piece of code as an example to introduce an example of the refactoring process and an example of the refactored runtime architecture.
[0043] Such as image 3 As shown in (a), the above code is the code before refactoring, and a total of three file-related objects are generated: one is that newFile(paramString) generates a File object; the other is that the File object is passed as a parameter to open() to generate A ParcelFileDescriptor object is obtained; the third is to use the getFileDescriptor() operation of the ParcelFileDescriptor object to generate a FileDescriptor object. The first of these three objects is created by the new keyword, the second is generated by the factory ParcelFileDescriptor.open function; the third is generated by the normal operation getFileDescriptor of the framework layer object ParcelFileDescriptor.
[0044] The refact...
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The invention relates to a method for realizing cloud locking of sensitive data on the basis of a reconstruction technology. According to the method, the binary byte codes of a mobile application are modified and reconstructed, and an application program interface (API) related to the file operation used by the mobile application is replaced, so that a sub-file system appointed by the cloud is fused with a terminal file system, the constructed application is capable of transparently reading and writing cloud data and then the aim of realizing the cloud locking of the sensitive data is achieved. The method comprises the following steps: carrying out programmed analysis on the existing mobile application; finding out a computational logic related to the file operation and carrying out corresponding reconstruction; and finally re-generating an application with direct cloud data reading / writing capability. The method provided by the invention is conducive to improving the security of the mobile phone sensitive data, and particularly has very important significance for the users that need to protect the sensitive data and do not hope to store the sensitive data on the terminals.
Description
technical field [0001] The invention is a method for realizing cloud locking of sensitive data by using program analysis and reconstruction technology to integrate files in multiple devices in an existing application, belonging to the technical field of software, and applicable to software maintenance. Background technique [0002] With the development of smart phones, more and more users use mobile office and mobile business to improve the efficiency of life and work. At the same time, more and more user sensitive data is stored on mobile phones. However, there are still various threats to these sensitive data: such as loss of mobile phone, data loss due to damage, malicious applications, mobile phone viruses causing sensitive data leakage and other issues. In response to data loss and data leakage, cloud storage data isolation and protection technologies represented by network disks have emerged. However, for various current network disks, when users need to read and wri...
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IPC IPC(8): G06F21/62G06F21/60
CPCG06F21/6218G06F8/72G06F16/16G06F16/1774G06F16/1794G06F2221/2147G06F21/602G06F2221/2107G06F2221/2141
Inventor 梅宏黄罡张颖蔡华谦
Owner PEKING UNIV