COUNTERMEASURE TO POWER ATTACK AND TIMING ATTACK ON CRYPTOGRAPHIC OPERATIONS

摘要

A cryptography circuit provides secure processing of data by utilizing countermeasures that combat timing and power attacks. Superfluous operations such as multiplication operations, modular reductions by an integer, storage of data to memory are available for use by a processor to disguise the amoun t of power usage and the amount of time required to perform a cryptographic operation. A cryptographic key is available for use in order to trigger when these emulated operations occur. The occurrences of the emulated operations in controlled by the user to provide the preferred tradeoff between security an d use of resources.