LAYOUT-OPTIMIZED RANDOM MASK DISTRIBUTION SYSTEM AND METHOD

摘要

A data processing system includes a module for generating and distributing random masks to a number of cryptographic accelerators while providing for fewer total interconnects among the components generating the random masks. The module segments the tasks associated with generating random masks across a number of modules and blocks such that routing and timing problems can be minimized and layout can be optimized. A method for generating and distributing random masks to a number of cryptographic accelerators is also provided. The random masks are utilized by cryptographic accelerators to protect secret keys, and data associated with those keys, from discovery by unauthorized users.

主权项

1. A method of distributing random masks in a cryptographic system, comprising the steps of:
providing a new random number to a first random number distribution circuit from a random number source via a bus; transmitting the random number to a first mask generating circuit; generating random masks in the first mask generating circuit using the random number; and distributing the random masks from the first mask generating circuit to a first cryptographic accelerator.