A method for concealing of at least one key k in an encryption algorithm ek(x) for encryption of data present in the form of a data vector x, wherein the key k in the encryption algorithm ek(x) is embedded and said method comprising the steps of:– Disassembly of at least a portion of the encryption algorithm ek(x) with the at least one embedded key k into elementary operations ei(x), wherein the elementary operations ei(x) in each case only to a component of the data vector and– Replacing at least one elementary operation ei(x) by means of a on the basis of an inverted animal function s which can be formed, equivalents of elementary operation ei''(x).
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机译：一种用于在加密算法e k （x）中隐藏至少一个密钥k的方法，以加密以数据矢量x形式存在的数据，其中，加密算法e < Sub> k （x）被嵌入，并且所述方法包括以下步骤：–用至少一个嵌入密钥分解加密算法e k （x）的至少一部分k分为基本运算e i （x），其中基本运算e i （x）在每种情况下仅针对数据向量的一部分，并且–至少替换一个基本操作e i （x）通过基于可形成的反向动物函数s的基本操作e i ''（x）的等效项。
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