They dont crack the cypher they go around it using liguistic patern analysis, if you dont pre encrypt with a symetric filter prior to encoding. Also an algorithim that constantly shifts like three card monty and uses multiple layers of encrption that are all changing encoding keys thousands of times a second like frequency hopping radio encoding. Harder no crack multiple moving targets.
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They dont crack the cypher they go around it using liguistic patern analysis, if you dont pre encrypt with a symetric filter prior to encoding. Also an algorithim that constantly shifts like three card monty and uses multiple layers of encrption that are all changing encoding keys thousands of times a second like frequency hopping radio encoding. Harder no crack multiple moving targets.