(Delphi ActiveX) Everyware API RSA Encrypt JSON

See more RSA Examples

For more information, see https://docs.everyware.com/docs/access-iframe#sample-json--encrypted-payload

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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;
json: TChilkatJsonObject;
dt: TCkDateTime;
sb: TChilkatStringBuilder;
bCrlf: Integer;
pubkey: TPublicKey;
rsa: TChilkatRsa;
encryptedJson: WideString;
sbUrl: TChilkatStringBuilder;

begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// First build the JSON to be encrypted.
json := TChilkatJsonObject.Create(Self);
json.UpdateString('provider_key','USER GUID HERE');
json.UpdateString('menu_item','payment');
dt := TCkDateTime.Create(Self);
dt.SetFromCurrentSystemTime();
json.UpdateString('date_time',dt.GetAsUnixTimeStr(0));

// This build JSON like the following:

// {
//     "provider_key": "USER GUID HERE",
//     "menu_item": "payment",
//     "date_time": "1588163411"
// }

// When we sign, we'll want to sign the most compact JSON possible
json.EmitCompact := 1;

// Everyware's RSA public key is at:  https://docs.everyware.com/docs/everyware-public-rsa-key
sb := TChilkatStringBuilder.Create(Self);
bCrlf := 1;
sb.AppendLine('-----BEGIN PUBLIC KEY-----',bCrlf);
sb.AppendLine('MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxNbflxUSWQ3XJ1N9dAoh',bCrlf);
sb.AppendLine('k+uaiFsg3wkPi9LGS/mH8DtHBgZxKyz+oQBDtnDd9FDEo0ql7MMgCMsTAv27W5vk',bCrlf);
sb.AppendLine('Pu0rm6zhcTeYquWEuVCS7VtVsyTATr0Z9WhqNeZlIRurovJAXl2jRDX6QeY5dayC',bCrlf);
sb.AppendLine('ubwyG4lBWE4fCakGY6zlh+oaElK0rvblqjYoEg3dn4KPRCYGof8OFxLptHThD4cE',bCrlf);
sb.AppendLine('T30j+utVafhO0HRyJ4iR3Pigb4GXdWBtJEEEWddZJizMkjFQkyUAoYLOT8EJ2TW3',bCrlf);
sb.AppendLine('Tz8SvAuHBUEFcPWTSTMAG/bSp5wrYBTXaeEhx+wrYa60OruHuzgmhzKyQVuYlCNJ',bCrlf);
sb.AppendLine('HdbnassuIRjjSNo25o4AdSlWwpGfBZjAiyEInR+KGpHdhKTxSekJxiwiXUS0UfSG',bCrlf);
sb.AppendLine('prOpd5PzWaAR7DvjLsdmR9XffxvJCVxC735gLK7hDJKjCajDPHVDr8FSL8xMlrq0',bCrlf);
sb.AppendLine('nKxtsHeRl1yzoGrRr12+9MiQnHtpqROTNXcXdwe3v+Vh8V5k8v8oIrcgh1+/N7Bd',bCrlf);
sb.AppendLine('NiRsy1gFHBdu/he/KcDRT/9/acQFMPLQueGfZxUvU5As6pEONjtKX2MUg2fMF6Rc',bCrlf);
sb.AppendLine('sQVVrLzg0g7EcuHGfuPeKfD/716MvS8NU7rX+2soijCSQv/e18PJPMVDlcMXjnup',bCrlf);
sb.AppendLine('PPx1tStemesavFlj1okhS6UCAwEAAQ==',bCrlf);
sb.AppendLine('-----END PUBLIC KEY-----',bCrlf);

pubkey := TPublicKey.Create(Self);
success := pubkey.LoadFromString(sb.GetAsString());
if (success = 0) then
  begin
    Memo1.Lines.Add(pubkey.LastErrorText);
    Exit;
  end;

rsa := TChilkatRsa.Create(Self);
success := rsa.ImportPublicKeyObj(pubkey.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(rsa.LastErrorText);
    Exit;
  end;

// We probably need a base64Url encoded encrypted key.
// Using straight-up base64 would potenially include chars that are not URL safe (i.e. have special meanings in URLs)
rsa.EncodingMode := 'base64url';

encryptedJson := rsa.EncryptStringENC(json.Emit(),0);

// Build the URL
// Such as:  https://portal.everyware.com/Account/LoginMenu?data={Base64Url_encrypted_JSON}
sbUrl := TChilkatStringBuilder.Create(Self);
sbUrl.Append('https://portal.everyware.com/Account/LoginMenu?data=');
sbUrl.Append(encryptedJson);

Memo1.Lines.Add(sbUrl.GetAsString());
end;