Question
The key size of the ideal block cipher is 2 bits. However, if there are 2! possible mappings, the key length should be log2 2!
The key size of the ideal block cipher is 2 bits. However, if there are 2! possible mappings, the key length should be log2 2! bits the key is able to discriminate among the different mappings. Explain the discrepancy, noting that log2 2! < 2.
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Database Systems For Advanced Applications 23rd International Conference Dasfaa 2018 Gold Coast Qld Australia May 21 24 2018 Proceedings Part 2 Lncs 10828
Authors: Jian Pei ,Yannis Manolopoulos ,Shazia Sadiq ,Jianxin Li
1st Edition
331991457X, 978-3319914572
