File Activation Delphi 2016 -

Result := True; finally Lines.Free; end; end; In your project source (or main form’s OnCreate ):

Here’s a simplified example using Base64 encoding (not secure alone – always use encryption in real apps): file activation delphi 2016

uses Winapi.Windows, System.SysUtils, System.Classes; function GetMachineID: string; var VolumeSerial: DWORD; MaxCompLen, FileSysFlags: DWORD; RootPath: string; ComputerName: array[0..MAX_COMPUTERNAME_LENGTH + 1] of Char; Size: DWORD; begin RootPath := 'C:'; GetVolumeInformation(PChar(RootPath), nil, 0, @VolumeSerial, MaxCompLen, FileSysFlags, nil, 0); Size := MAX_COMPUTERNAME_LENGTH + 1; GetComputerName(ComputerName, Size); Result := Format('%d-%s', [VolumeSerial, string(ComputerName)]); end; ⚠️ Note: For production, combine multiple identifiers (MAC address, processor ID) to avoid false positives. On your server (or within an admin tool), encrypt the machine ID along with expiration date and features. Use System.NetEncoding and a strong cipher (e.g., Delphi's TCipher_AES from System.Encryption ). Result := True; finally Lines

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

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.

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