1. A hardware countermeasure for a cryptographic hardware module of a computing device, the hardware countermeasure comprising: a non-Gaussian noise-sample generator, wherein the noise-sample generator is operable to accept as input data samples to be processed by the cryptographic hardware module and to generate as output a non-Gaussian noise-sample for each of the input data samples, and wherein the non-Gaussian noise-sample is a binary number associated with a power level that corresponds to one or more buffers of the distributed buffer network; and, a distributed buffer network co-located with the cryptographic module, wherein the distributed buffer network is operable to accept as input the non-Gaussian noise-samples and to emit, for each of the noise-samples, a noise output power proportional to the power level associated with that noise-sample by activating, for each bit of the binary number, one or more buffers corresponding to a significance of that i th bit, such that the activated one or more buffers emit a noise power proportional to 2 i .