AipGateway/AipExeApplication/AipApiManager/TWinCryptF.h

//---------------------------------------------------------------------------

#ifndef TWinCryptFH
#define TWinCryptFH
//---------------------------------------------------------------------------

#include <string>
#include <windows.h>
#include <wincrypt.h>
//---------------------------------------------------------------------------

//https://www.experts-exchange.com/articles/1193/Easy-String-Encryption-Using-CryptoAPI-in-C.html
class TWinCrypt
{
public:
    TWinCrypt();
    virtual ~TWinCrypt();

private:
    HCRYPTPROV  FProv;
    HCRYPTHASH  FHash;
    HCRYPTKEY   FKey;

    bool        FOk;
    DWORD       FLastErr;
    std::string FErrMsg;
    char       *FDefaultKeyRaw;

public:
    bool SetKey(LPCSTR szKey, LPCSTR szSalt=NULL);
    bool EncryptDecrypt(BYTE* pData, DWORD* dwDataLen, LPCSTR pKey, bool fEncrypt);
    std::string EncryptStrToHex(LPCSTR szText, LPCSTR pszKey = 0, LPCSTR pszSalt = 0);
    std::string EncodeToHex(BYTE* p, int nLen);
    std::string DecryptStrFromHex(LPCSTR szHex, LPCSTR pszKey = 0, LPCSTR pszSalt = 0);
    int DecodeFromHex(LPCSTR pSrc, BYTE* pDest, int nBufLen);

};
//---------------------------------------------------------------------------

#endif