Method and device for protected transmission of data words
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Abstract
Method for protected transmission of data words includes providing a first data word, transforming the first data word into a sequence including at least one second data word using a first transformation rule, transforming at least one of the second data words into a third data word using a second transformation rule, and checking whether a prescribed relationship exists between the third data word and a comparison data word.
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Citations
47 Claims
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1-21. -21. (canceled)
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22. A method for protected transmission of data words, comprising:
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providing a first data word;
transforming the first data word into a sequence comprising at least one second data word using a first transformation rule, transforming at least one of the second data words into a third data word using a second transformation rule; and
checking whether a prescribed relationship exists between the third data word and a comparison data word. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A circuit arrangement for protected transmission of data words, comprising:
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a data input connected to a first transformation device, which is configured to transform a first data word applied to the data input into a sequence of data words which comprises at least one second data word;
a second transformation device, which is coupled to the first transformation device, is configured to transform at least one of the second data words into a third data word; and
a checking device, which has the third data word and a comparison data word supplied thereto, is configured to check whether the third data word and the comparison data word are in a prescribed relationship. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification