A Novel Design of Secure and Private Circuits

Abstract

Secure and tamper evident computing systems can be built by encrypting both code and data. Even such secure execution environments assume the existence of a trusted processor boundary inside which the data and code are decrypted before actually using them for computation. This leaves such secure systems vulnerable against side-channel attacks. In general there are two approaches to solve this problem. First approach is to design cryptographic algorithms which can tolerate some information leakage. Second approach is to remove the correlation between the leaked information and the secret. We propose a novel circuit design technique which uses the second approach.