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The alternation of substitution from the S-boxes , and permutation of bits from the P-box and E-expansion provides so-called " confusion and diffusion " respectively , a concept identified by Claude Shannon in the 1940 s as a necessary condition for a secure yet practical cipher .
 person: Claude Shannon
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Claude Shannon 
Answer:
 person: Claude Shannon