Method and device for generating white box library file

A technology for generating devices and library files, applied in secure communication devices, usage of multiple keys/algorithms, electrical components, etc., can solve problems such as key insecurity, simplify encryption process, improve security, and facilitate updating. Effect

Active Publication Date: 2018-06-08
BEIJING BANGCLE TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The embodiment of the present application provides a method and device for generating a white box library file to solve the problem of key insecurity in the prior art

Method used

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  • Method and device for generating white box library file
  • Method and device for generating white box library file
  • Method and device for generating white box library file

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Embodiment Construction

[0026] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0027] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0028] In this application, a dynamic white box technical solution is mainly introduced. The so-called dynamic white box means that the white box library file does not need to be ...

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Abstract

The invention relates to the technical field of terminal security protection, and in particular relates to a method and device for generating a white box library file, used for solving the problem that a key is unsafe in the prior art. The method comprises the steps of: according to a determined first parameter combination, determining a first code block matched with the first parameter combination; running the first code block, and randomly generating a lookup table source file; and, compiling the lookup table source file, so that a white box library file is obtained. Thereby, key updating isrelatively convenient; furthermore, when the key is updated, the white box library file does not need to be updated; therefore, a dynamic white box encryption process can be simplified; furthermore,the security of the key is improved; and thus, the security of decrypting a ciphertext and encrypting a plaintext by a user can be improved.

Description

technical field [0001] The present application relates to the technical field of terminal security protection, in particular to a method and device for generating a white box library file. Background technique [0002] With the development of terminal technology, more and more application programs are installed in the terminal. In the process of using these applications, users will generate some data that they do not want to be stolen by attackers, or users do not want the execution logic of the application itself to be reversely cracked by attackers. In order to protect the security of the application program and the data generated during its running, it is often necessary to encrypt these data. [0003] The traditional encryption technology is black-box encryption technology. Black-box encryption technology generally refers to the technology of encrypting plaintext data with an encryption algorithm in a black-box environment to obtain ciphertext data and keys. Among them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/16H04L9/00H04L29/06
CPCH04L9/002H04L9/16H04L63/0435H04L63/205H04L2209/16
Inventor 阚志刚陈彪王全洲卢佐华方宁
Owner BEIJING BANGCLE TECH CO LTD
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