fork download
copy 
  1. // file XOR test 3
  2. #include <iostream>
  3. #include <string>
  4. #include <fstream>
  5. #include <boost/filesystem.hpp>
  6. void XOR(const std::string& filePath, const std::string& outputPath, const std::string& key)
  7. {
  8.     std::ifstream in(filePath, std::ios::binary);
  9.     std::ofstream out(outputPath, std::ios::binary);
  10.  
  11.     const int blocksize = 10240;
  12.     char buffer[blocksize];
  13.     const int keyBufSize=64;
  14.     char keyBuf[keyBufSize];
  15.  
  16.     for(int i=0; i<keyBufSize; i++)
  17.         keyBuf[i] = key[ i % key.size() ];
  18.  
  19.     while(in.read(buffer, blocksize), in.gcount() > 0)
  20.     {
  21.         int j=0;
  22.         for( ; j < blocksize - blocksize%keyBufSize; j += keyBufSize) {
  23.             for(int k=0; k<keyBufSize; k++)
  24.                 buffer[j+k] ^= keyBuf[k];
  25.         }
  26.  
  27.         for( ; j<blocksize; j++) // won't happen
  28.             buffer[j] ^= key[j%key.size()];
  29.         out.write(buffer, in.gcount());
  30.     }
  31. }
  32. int main()
  33. {
  34.     XOR("test.bin", "test.out", std::string(32, '*'));
  35.     std::cout << "File size: " << boost::filesystem::file_size("test.bin") << '\n';
  36.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp:5:32: fatal error: boost/filesystem.hpp: No such file or directory
compilation terminated.
stdout
copy 
Standard output is empty
https://ideone.com/0tkAg
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!