Side Channel Attack Based on Cache Behaviors
Chen Kai-yan · Jisuanji gongcheng · 2008
This paper presents a new type of side channel attack based on Cache behaviors.For the implementation of Data Encryption Standard(DES)which takes the operations of looking up tables,with the assistant of mathematical analysis,the search area of the secret key can be reduced effectively by discovering the Cache hit information daring the first 2 rounds of DES.The result from the experiment of Cache behaviors-based attack simulation shows that the DES key can be recovered with 2~6 chosen-plaintexts in 2~(30)times off-line DES encryption.Several countermeasures for attack of this type are introduced.