Chilkat • HOME • Android™ • AutoIt • C • C# • C++ • Chilkat2-Python • CkPython • Classic ASP • DataFlex • Delphi DLL • Go • Java • Node.js • Objective-C • PHP Extension • Perl • PowerBuilder • PowerShell • PureBasic • Ruby • SQL Server • Swift • Tcl • Unicode C • Unicode C++ • VB.NET • VBScript • Visual Basic 6.0 • Visual FoxPro • Xojo Plugin
(Delphi ActiveX) Generate an RSA Key and Get as Base64 DERDemonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB; ... procedure TForm1.Button1Click(Sender: TObject); var rsa: TChilkatRsa; success: Integer; pubKey: IPublicKey; bChoosePkcs1: Integer; pubKeyBase64Der: WideString; privKey: IPrivateKey; privKeyPkcs1: WideString; privKeyPkcs8: WideString; begin // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. rsa := TChilkatRsa.Create(Self); // Generate a 2048-bit key. Chilkat RSA supports success := rsa.GenerateKey(2048); if (success <> 1) then begin Memo1.Lines.Add(rsa.LastErrorText); Exit; end; // Get the public part of the key. pubKey := rsa.ExportPublicKeyObj(); // There are two possible formats for representing the RSA public key // in ASN.1 (DER). The possible formats are PKCS1 and PKCS8. // We can get either by setting bChoosePkcs1 to 1 or 0. bChoosePkcs1 := 1; pubKeyBase64Der := pubKey.GetEncoded(bChoosePkcs1,'base64'); Memo1.Lines.Add('Public Key Base64 DER:'); Memo1.Lines.Add(pubKeyBase64Der); // Now get the private key as Base64 DER: // Get the private part of the key. // (Note: A public key is actually just a subset of the private key. // If you have the private key, you also have the public key. // Thus Chilkat provides a method to get the public key from the private key.) privKey := rsa.ExportPrivateKeyObj(); // Again, we can get PKCS1 or PKCS8, but with different methods: privKeyPkcs1 := privKey.GetPkcs1ENC('base64'); Memo1.Lines.Add('Private Key PKCS1 Base64 DER:'); Memo1.Lines.Add(privKeyPkcs1); privKeyPkcs8 := privKey.GetPkcs8ENC('base64'); Memo1.Lines.Add('Private Key PKCS8 Base64 DER:'); Memo1.Lines.Add(privKeyPkcs8); end; |
© 2000-2025 Chilkat Software, Inc. All Rights Reserved.