File Activation Delphi 2016 May 2026

Signature := TNetEncoding.Base64.Decode(RSA_Sign(DataToSign, PrivateKey)); // pseudo Move(Signature[0], License.Signature, Length(Signature));

// Recreate the data that was signed DataToVerify := BytesOf(License.UserName) + BytesOf(License.ProductCode) + BytesOf(License.ExpirationDate) + BytesOf(License.FeatureMask) + BytesOf(License.HardwareIDHash); SetLength(StoredSignature, SizeOf(License.Signature)); Move(License.Signature, StoredSignature[0], SizeOf(License.Signature)); File Activation Delphi 2016

// Verify RSA Signature using embedded public key if not RSA_Verify(DataToVerify, StoredSignature, PublicKey) then Exit; Signature := TNetEncoding

Remember: No activation system is 100% unbreakable. Your goal is to raise the bar high enough that casual piracy is impractical. For Delphi 2016 developers, the tools are all in your hands— System.Hash , WMI, and strong file I/O give you everything you need. Signature := TNetEncoding.Base64.Decode(RSA_Sign(DataToSign