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(Delphi ActiveX) RSA Encrypt with Modulus and ExponentDemonstrates how to RSA encrypt with a given modulus and exponent. Note: This example requires Chilkat v11.0.0 or greater.
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 success: Integer; rsa: TChilkatRsa; modulus: WideString; exponent: WideString; xml: TChilkatXml; pubKey: TPublicKey; usePrivateKey: Integer; plainText: WideString; encryptedStrBase64: WideString; begin success := 0; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. rsa := TChilkatRsa.Create(Self); // Assuming you already have a base64 modulus and exponent, // wrap it in XML like this: modulus := 'qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM='; exponent := 'AQAB'; xml := TChilkatXml.Create(Self); xml.Tag := 'RSAPublicKey'; xml.NewChild2('Modulus',modulus); xml.NewChild2('Exponent',exponent); pubKey := TPublicKey.Create(Self); success := pubKey.LoadFromString(xml.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(pubKey.LastErrorText); Exit; end; success := rsa.UsePublicKey(pubKey.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(rsa.LastErrorText); Exit; end; usePrivateKey := 0; plainText := 'message in a bottle'; rsa.EncodingMode := 'base64'; encryptedStrBase64 := rsa.EncryptStringENC(plainText,usePrivateKey); Memo1.Lines.Add(encryptedStrBase64); end; |
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