White-box cryptography interleaved look-up table

Abstract

A method of generating a white-box implementation of a cryptographic function, comprising: creating, by a processor, a white-box implementation of a cryptographic function using a network of two-dimensional look-up tables; identifying the two-dimensional look-up table using a common index; The two-dimensional lookup table of is rewritten as a three-dimensional table.

Description

technical field [0001] Various exemplary embodiments disclosed herein relate generally to interleaved look-up tables used in white-box cryptography, wherein the interleaved look-up tables increase execution speed. Background technique [0002] The Internet provides users with convenient and widespread access to digital content. Because the Internet is a powerful distribution channel, many user devices strive to access the Internet directly. User devices may include personal computers, laptop computers, set-top boxes, Internet-enabled media players, mobile phones, smart phones, tablet computers, mobile wireless hotspots, or any other device capable of accessing the Internet. The use of the Internet as a distribution medium for copyrighted content presents powerful challenges to protecting the interests of content providers. User devices increasingly use processors loaded with appropriate software to render (play back) digital content such as audio and / or video. Control of ...

AI Technical Summary

Problems solved by technology

The idea behind this is that it becomes more difficult to extract information through code inspection alone

Therefore, it is more difficult to find and then change the code that handles access and admission control of a secure application, for example

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