Protection API - SDP_SetRegistrationKey

SDP_SetRegistrationKey

The SDP_SetRegistrationKey passes the registration key to SDProtector. This function allows to keep registration keys in any place and in any format.

  For C++:

        LPSTR __declspec(dllexport)  SDP_SetRegistrationKey();
  For Delphi:
       function  SDP_SetRegistrationKey: PChar;stdcall;
       exports   SDP_SetRegistrationKey;

Parameters

lpdwNum

This function has no parameters.

Return Values

Points to the buffer that holds registration key

Remarks

The string passed to SDProtector should not contain more than 192 character.

Example

for C/C++

    // This sample reads the key from key.txt file, which is located in the application folder.

extern "C" LPSTR __declspec(dllexport)  SDP_SetRegistrationKey()
{
   
   HANDLE hFile;
   DWORD dFileSize;
   DWORD dReadSize;
   char  *p;
   static char szKey[192];
   char szFileName[MAX_PATH];
    
    if(!GetModuleFileName(NULL,szFileName,MAX_PATH))
    {
      return NULL;
    }
    p=strrchr(szFileName,'\\');
    if(!p)
    {
      return NULL;
    }
    *p='\0';
    strcat(szFileName,"\\key.txt");
    memset(szKey,0,192);
    hFile=CreateFile(szFileName,GENERIC_READ,FILE_SHARE_READ|FILE_SHARE_WRITE
  	              ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);   
    if(hFile == INVALID_HANDLE_VALUE) 
    { 
       return NULL;
    }
    dFileSize=GetFileSize(hFile, NULL);
    if(dFileSize==-1||dFileSize>=192)
    {
       CloseHandle(hFile);
       return NULL;
    }
    if(!ReadFile(hFile,szKey,dFileSize,&dReadSize,NULL))
    {
       CloseHandle(hFile);
       return NULL; 
    }  
    CloseHandle(hFile);
    if(dFileSize!=dReadSize)
    {
       return NULL;
    }

    
    return (LPSTR)szKey;
}

for Delphi

    // This sample reads the key from key.txt file, which is located in the application folder.

var
  Key : Pointer;
function  SDP_SetRegistrationKey: PChar;stdcall;
var
  FileName : String;
begin
  Result := '';
  try
    FileName := ExtractFilePath(ParamStr(0))+'key.txt';
    with TFileStream.Create(FileName, fmOpenRead) do
    try
      GetMem(szKey, Size+1);
      FillChar(szKey^, Size+1, 0);
      Read(szKey^,Size);
    finally
      Free;
    end;
    Result := szKey;
  except
  end;
end;
exports SDP_SetRegistrationKey;