CYCLIC REDUNDANCY CHECK METHOD WITH PROTECTION FROM SIDE CHANNEL ATTACKS

The invention relates to a method for processing a binary data item (D), comprising a step of calculating cyclic redundancy check code for the data item by means of a generator polynomial (PC), in which the step of calculating the cyclic redundancy check code comprises steps consisting in: masking t...

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Bibliographic Details
Main Authors VERNEUIL, VINCENT, ROUSSELLET, MYLENE
Format Patent
LanguageEnglish
Published 01.05.2015
Subjects
BASIC ELECTRONIC CIRCUITRY
CALCULATING
CODE CONVERSION IN GENERAL
CODING
COMPUTING
COUNTING
DECODING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:The invention relates to a method for processing a binary data item (D), comprising a step of calculating cyclic redundancy check code for the data item by means of a generator polynomial (PC), in which the step of calculating the cyclic redundancy check code comprises steps consisting in: masking the data item with a random binary mask (R2) that is a multiple of the generator polynomial, and generating the cyclic redundancy check code for the data item from the masked data item (D2), the masking process consisting in adding the random binary mask (R2) to the binary data item.
Bibliography:Application Number: IN2014KOLNP2283