Patent application number | Description | Published |
20090037508 | METHOD FOR IMPLEMENTING MONTGOMERY MODULAR MULTIPLICATION AND DEVICE THEREFORE - Device for implementing modular multiplication, characterized in that it comprises at least one computation cell comprising a multiplier-adder comprising p pipelined logic-register pairs, receiving several digits to be added together and multiplied, at least two outputs corresponding to the low order and to the high order, an adder receiving the two outputs of the multiplier-adder, the number p being chosen in such a way that the maximum frequency of the multiplier-adder is greater than or equal to the maximum frequency of the adder. | 02-05-2009 |
20090086961 | MONTGOMERY MASKED MODULAR MULTIPLICATION PROCESS AND ASSOCIATED DEVICE - This invention concerns a Montgomery masked modular multiplication process and the associated device. The modular multiplication, in congruence n, includes at least a stage generating a pseudo-random number z and a stage adding to the result the product of the said number by n. The invention applies in particular to the securing of processors dedicated to cryptographic calculations. | 04-02-2009 |
20090089350 | MODULAR REDUCTION OPERATOR - This invention concerns an improved modular reduction device. The modular reduction device includes a multiplier using an alternative of the Montgomery multiplication process using a high numeration base r with r being equal to or greater than 4. It applies more particularly to the calculation components used for asymmetrical cryptography. | 04-02-2009 |