Abstract: A microprocessor including random cache line refill ordering to lessen side channel leakage in a cache line and thus thwart cryptanalysis attacks such as timing attacks, power analysis attacks, and probe attacks. A random sequence generator is used to randomize the order in which memory locations are read when filling a cache line.

Abstract: A microprocessor including random cache line refill ordering to lessen side channel leakage in a cache line and thus thwart cryptanalysis attacks such as timing attacks, power analysis attacks, and probe attacks. A random sequence generator is used to randomize the order in which memory locations are read when filling a cache line.

Abstract: A random slip generator is provided to lessen side channel leakage and thus thwart cryptanalysis attacks, such as timing attacks and power analysis attacks. Random slip generation may be configurable so that the average frequency of random slips generated by the system may be set. Additional techniques are provided to make nullified instructions consume power like any other executing instruction.

Abstract: A microprocessor includes random cache line refill ordering to lessen side channel leakage in a cache line and thus thwart cryptanalysis attacks such as timing attacks, power analysis attacks, and probe attacks. A random sequence generator is used to randomize the order in which memory locations are read when filling a cache line.

Abstract: The invention relates to a cryptographic method wherein, in order to carry out a fully polynomial division of type Q(x)[U(x)/N(x)], wherein Q(x), N(x) and U(x) are polynomials, respectively a result, dividend and a divider, multiplication of the two polynomials is carried out followed by displacement of the bits of the result of the multiplication. The operation is performed on the body of polynomials Fp[x]. The invention enables more complex operations to be carried out, including modular operations. The invention is an alternative to the Montgomery method and does not need any correction. It is useful, in particular, for cryptographic methods wherein polynomial operations are carried out on the body F2[x]. The invention also relates to an appropriate coprocessor for carrying out the method.