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Vulnerabilities of a word-level substitution cipher

TL;DR: Word based substitution is not strong, given modern computational capabilities. If you have a dictionary of common words, you can to do frequency analysis either on a word basis or on a global ...
kodlu's user avatar
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What's the difference between these two attacks?(Lim Lee and Sub group) I am a beginner can someone explain in detail?

In the first instance we have two legitimate users $A$ and $B$ attempting to establish an ephemeral one-time shared secret key using their both static long term public private pairs $(x_A,y_A=g^{x_A})$...
Daniel S's user avatar
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