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What is Clustering Techniques in Cryptanalysis about?

This document summarizes a new technique that applies information retrieval (IR) clustering and categorization methods to cryptanalysis. Specifically, it develops a procedure to determine the keylength of polyalphabetic ciphers. The procedure involves 3 stages: 1) Hierarchical clustering is used to group ciphertexts encrypted with the same key; 2) the Kasiski index is calculated for each text to label each group; 3) k-Nearest Neighbor categorization is applied to determine the keylength for each group based

Author

Jose Antonio Moreira Xexeo

Language

EN