| 摘要 |
Method for realizing a binary counter that changes a partly permuted data word stored in a non-volatile memory and including a counter and a working memory and storing a data word in the form of memory words in the non-volatile memory. The method further comprises reading the memory words of the data word and storing the memory words in the working memory while performing an inverse reordering of k permutation bits of the data word, applying an inverse bijective mapping function to the k permutation bits of the data word, altering the data word, applying a bijective mapping function to the k permutation bits of the data word, performing a reordering of the k permutation bits, and checking each memory word for deviations from the memory word stored in the non-volatile memory and storing only those memory words in the non-volatile memory again for which this is the case.
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