关键词: 侧信道攻击, 风险评估, 风险量化, 评估模型, 层次化

Abstract: As the side channel attacks diversification, the crypto-chip safety risk assessment and select optimal attack and defense tactics become the present study blind spot on many side channel leak conditions. In view of many side channel leaks, from the side channel information leak angle, using the information entropy to quantitative side channel information of the crypto-chip, mutual information as safety risk measure, a hierarchy-based risk evaluation model is presented. This model uses “bottom-up, first local then the whole” analysis method, divides the different of side channel leak and attack, and uses mutual information as the quantitative indexes of side channel leaks risk, evaluates safety risk effectively through the fuzzy comprehensive analysis method.

Key words: side-channel attack, risk assessment, risk quantitative, evaluation model, hierarchy