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AssigneeIdemia France
InventorsGuillaume Barbu, Alberto Battistello, Luk Bettale, Nicolas Debande, Christophe Giraud, Sarah Lopez, Franck Rondepierre
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A cryptographic processing method comprises the following steps: obtaining a second number determined by adding to a first number the order of a finite group or a multiple of this order; determining a quotient and a remainder by dividing the second number by a random number; obtaining a third element equal to the combination of elements equal to a first element of the finite group and in number equal to the product of the quotient and the random number; obtaining a fourth element equal to the combination of elements equal to the first element and in number equal to the remainder; determining a second element by combining the third element and the fourth element.
A cryptographic processing method comprising the determination, in a finite order group provided with an operation and from a first element (M) of this group, of a second element (Sp;
An electronic device (2) comprising a processor (4) and a storage module (6) storing computer program instructions suitable for, when these instructions are executed by the processor (4), determining, in a finite order group provided with an operation and from a first element (M) of this group, a second element (Sp;
Dependencies are inferred from the claim text.