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Method of testing the resistance of a circuit to a side channel analysis of second order or more
Method of testing the resistance of a circuit to a side channel analysis of second order or more
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机译:测试电路对二阶或更高阶次侧通道分析的电阻的方法
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摘要
A test method can include: acquiring a plurality of value sets including measurements or signals corresponding with activity of a circuit when executing a set of cryptographic operations on secret data, for each value set, selecting at least two subsets of values, computing combined values and counting occurrence numbers of values transformed by a first surjective function applied to the combined values, for each operation and each possible value of a part of the secret data, computing a partial operation result, computing cumulative occurrence number sets by adding the occurrence number sets corresponding to the operations of the operation set, which when applied to a same value of the possible values of the part of the secret data, provide a partial operation result having a same transformed value by a second surjective function, and determine the part of the secret data from the cumulative occurrence number sets.
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