Extract or Figure out the encryption/encoding algorithm from Sample Input/Output Datas

Hi, I have some sample data inputs and encoded/encrypted outputs. I want to know the exact algorithm used for obtaining the output and convert into PHP or C++ code that can do the same encryption/encoding. The same encoding or encryption is also used in a Windows application, So it might be easier to extract the algorithm by dissembling the binary file (.exe file) Please only bid if you are familiar with complex encryption methods. I will check your the portfolio and more details will be shared.