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  1. #include <iostream>
  2. #include <boost/archive/iterators/binary_from_base64.hpp>
  3. #include <boost/archive/iterators/base64_from_binary.hpp>
  4. #include <boost/archive/iterators/transform_width.hpp>
  5. #include <boost/algorithm/string.hpp>
  6. using namespace std;
  7.  
  8. bool lambdaFunc(char c) {
  9.   return c == '\0';
  10. }
  11.  
  12. std::string decode64(const std::string& iEncodedVal) {
  13.   const short aBitsin = 6;
  14.   const short aBitsout = 8;
  15.   std::string oDecodedVal = boost::algorithm::trim_right_copy_if(
  16.       std::string(boost::archive::iterators::
  17.                       transform_width<boost::archive::iterators::binary_from_base64<std::string::const_iterator>, aBitsout, aBitsin>(
  18.                           iEncodedVal.begin()),
  19.                   boost::archive::iterators::
  20.                       transform_width<boost::archive::iterators::binary_from_base64<std::string::const_iterator>, aBitsout, aBitsin>(
  21.                           iEncodedVal.end())),
  22.       lambdaFunc);
  23.  
  24.       return oDecodedVal;
  25. }
  26.  
  27. std::string  encode64(const std::string& iDecoded) {
  28.   // convert to base64
  29.   const short aBitsin = 8;
  30.   const short aBitsout = 6;
  31.   std::string oEncodedVal =
  32.       std::string(boost::archive::iterators::base64_from_binary<
  33.                       boost::archive::iterators::transform_width<std::string::const_iterator, aBitsout, aBitsin> >(iDecoded.begin()),
  34.                   boost::archive::iterators::base64_from_binary<
  35.                       boost::archive::iterators::transform_width<std::string::const_iterator, aBitsout, aBitsin> >(iDecoded.end()));
  36.   // pad with '='
  37.   const int iSize = iDecoded.size();
  38.   oEncodedVal.append((3 - (iSize % 3)) % 3, '=');
  39.  
  40.   return oEncodedVal;
  41. }
  42. //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  43. int main() {
  44.  
  45. 	std::string decodedString = "8uDu84iOR0x5GlGZupB4FLUBZN3SpxqdP95CBKPyyhO0";  //input 
  46. 	std::string encodedString = ""; //input
  47.  
  48.     std::cout<<"Encoded key: "<<encode64(decodedString)<<std::endl;
  49.     std::cout<<"Decoded key: "<<decode64(encodedString)<<std::endl;
  50.  
  51. 	return 0;
  52. }
  53. //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  54.  
Success #stdin #stdout 0.01s 5408KB
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stdin
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Standard input is empty
stdout
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Encoded key: OHVEdTg0aU9SMHg1R2xHWnVwQjRGTFVCWk4zU3B4cWRQOTVDQktQeXloTzA=
Decoded key:
https://ideone.com/es7nQu
Encode/Decode Keys
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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