File Activation Delphi 2016 May 2026

// Optional: Check expiration date if StrToDateDef(Parts[2], 0) < Now then Exit;

On activation, your server returns this encoded string as a .key or .lic file. When your application starts, locate the activation file and validate it. file activation delphi 2016

function ValidateActivationFile(const FileName: string): Boolean; var Lines: TStringList; Decoded, MachineIDPart, HashPart, CalculatedHash: string; Parts: TArray<string>; begin Result := False; if not FileExists(FileName) then Exit; Lines := TStringList.Create; try Lines.LoadFromFile(FileName); if Lines.Count = 0 then Exit; Decoded := TNetEncoding.Base64.Decode(Lines[0]); Parts := Decoded.Split(['|']); if Length(Parts) < 3 then Exit; Now then Exit

if CalculatedHash <> HashPart then Exit; var Lines: TStringList

// Rebuild the original data without the hash SetLength(Parts, Length(Parts) - 1); CalculatedHash := THashSHA2.GetHashString(string.Join('|', Parts), SHA256);

MachineIDPart := Parts[0]; HashPart := Parts[High(Parts)];