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(Delphi ActiveX) Get Base64 Public Key from Private KeyDemonstrates how to get the public key in base64 format from a private key.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB; ... procedure TForm1.Button1Click(Sender: TObject); var bd: TChilkatBinData; success: Integer; privKey: TPrivateKey; pubKey: IPublicKey; pubKeyBase64: WideString; begin // Load a private key from base64. bd := TChilkatBinData.Create(Self); success := bd.AppendEncoded('MHQCA....n0Q==','base64'); privKey := TPrivateKey.Create(Self); success := privKey.LoadAnyFormat(bd.ControlInterface,''); if (success = 0) then begin Memo1.Lines.Add(privKey.LastErrorText); Exit; end; pubKey := privKey.GetPublicKey(); if (privKey.LastMethodSuccess = 0) then begin Memo1.Lines.Add(privKey.LastErrorText); Exit; end; pubKeyBase64 := pubKey.GetEncoded(1,'base64'); Memo1.Lines.Add(pubKeyBase64); end; |
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