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

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