Known-IV Attacks on Triple Modes of Operation of Block Ciphers

With chosen-IV chosen texts, David Wagner has analyzed the multiple modes of operation proposed by Eli Biham in FSE'98. However, his method is too unrealistic. We use only known-IV chosen texts to attack many triple modes of operation which are combined with cascade operations. 123 triple modes are analyzed with complexities less than E. Biham's results. Our work shows that the securities of many triple modes decrease when the initial values are exposed.

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