Differential fault analysis about feistel block cipher

Abstract

Light-weight block cipher is the protection of RDIF label and smart card in communication of Internet of things.It's safty is very important..The article analyzes the fault propagation of the traditional light-weight block cipher with feistel structure and proposing a deep differential fault analysis straregy. The method based on half byte fault attack principle, for the feistel light-weight block cipher, can get the corresponding key information according to the fault and correct ciphertext's difference. establishing single round half byte fault injection model, multiple-rounds half byte fault injection model, multiple-rounds of two half byte fault injection model these three different attack models for specific cryptographic algorithms can obtain the most efficient way to attack algorithm. At the same time, giving the experimental results of the l feistel algorithms LBlock.