{"title":"A New Method for Impossible Differential Cryptanalysis of 7-Round AES-192","authors":"Z. He, Zhihua Hu","doi":"10.1109/IPTC.2011.62","DOIUrl":null,"url":null,"abstract":"Impossible differential cryptanalysis is an analysis method by constructing impossible differential path, eliminating the keys satisfying this path, and finally recovering the secret keys. This paper has utilized a new property of MixColumns Transformation, constructed a new 4-round impossible differential path, added 1-round and 3-round possible differential path before and behind this path respectively, and constructed a new 7-round impossible differential path. This path has been utilized to analyze 64-bit initial keys of 7-round AES-192, and this analysis method requires 271 pairs of selected plaintexts, about 272 memory cells and about 2135 encryption and decryption computation.","PeriodicalId":388589,"journal":{"name":"2011 2nd International Symposium on Intelligence Information Processing and Trusted Computing","volume":"32 13","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 2nd International Symposium on Intelligence Information Processing and Trusted Computing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IPTC.2011.62","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Impossible differential cryptanalysis is an analysis method by constructing impossible differential path, eliminating the keys satisfying this path, and finally recovering the secret keys. This paper has utilized a new property of MixColumns Transformation, constructed a new 4-round impossible differential path, added 1-round and 3-round possible differential path before and behind this path respectively, and constructed a new 7-round impossible differential path. This path has been utilized to analyze 64-bit initial keys of 7-round AES-192, and this analysis method requires 271 pairs of selected plaintexts, about 272 memory cells and about 2135 encryption and decryption computation.
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