A kind of AES mask encryption methods of anti-high-order power consumption analysis

A kind of AES mask encryption methods of anti-high-order power consumption analysis

  • CN 107,070,633 A
  • Filed: 03/20/2017
  • Published: 08/18/2017
  • Est. Priority Date: 03/20/2017
  • Status: Active Grant
First Claim
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1. a kind of AES mask encryption methods of anti-high-order power consumption analysis, it is characterised in that the anti-high-order differential power analysis of designMask protectiving scheme, mainly comprises the following steps:

  • Step 1, S boxes invert nonlinear operation high-order mask scheme initialization:

    (1) it is the sensitive data for needing to carry out inversion operation to assume a, and it is domain F to make a=g (k), b=h (k), g (*) and h (*)2'"'"'sLinear relationship, b and k are domainRandom number;

    (2) it is random to splitWithi∈

    [0;

    D], meetWithaiIt is a d+1 share, and each share is not equal to 0;

    Wherein, for a be 0 when, S boxes are askedThe problem of inverse nonlinear operation can not resist zero-value attack, then carry out taking precautions against the processing of zero-value attack;

    Step 2, according to defining 1, random number variate-value k is introduced, formula is derived:

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