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symmetric ciphers (RC4 (issues (one time key use, once an adversary can…

- - - - generate state array
        
        input of 256 elements containing values of 0,1,2, etc
        
        using variable secret key to turn array into a psuedo random order
    - - generate keystream
      - XOR keystream with data
        
        output byte is selected by looking up the values of s(i) and s(j) adding them together modulo 256 and then looking up the sum in s
  - - - generate key stream using KSA and PRGA