Synopsys, Inc.

Nimisha Limaye

Michael Bowler

A method includes: receiving an input message; computing values based on the input message; initializing an accumulator value; iterating, by a processor, through bits of a secret key, each iteration including: selecting a specified number of next most significant bits (MSBs) of the secret key as a bitstring of selected bits; selecting, randomly, one of the values computed from the input message; in a case where all bits of the bitstring of selected bits of the secret key have values of zero: updating the accumulator value based on the specified number of the next MSBs; and performing a dummy operation based on the accumulator value and the randomly selected one of the values computed from the input message; generating an output message based on a value stored in the accumulator value after iterating through the bits of the secret key.

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Jersey City, NJ, United States of America

Nimisha Limaye