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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. typedef unsigned char byte;
  5.  
  6. byte calc_iv(std::vector<byte> buffer)
  7. {
  8.     int iv = 0;
  9.     for(int i = 0; i < buffer.size(); i++) {
  10.         byte I = buffer[i];
  11.         iv += I;
  12.         iv *= I + 1;
  13.     }
  14.     return iv / buffer.size();
  15. }
  16.  
  17.  
  18. int main(){
  19.     std::vector<byte> buf = {41, 32, 16};
  20.     byte iv = calc_iv(buf);
  21.     std::cout<<(int)iv<<std::endl;
  22.  
  23.     return 0;
  24. }
  25.  
Success #stdin #stdout 0s 4400KB
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https://ideone.com/oHvZOA
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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