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Delphi ActiveX

Get the JWS Payload into a StringBuilder

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.GetPayloadSb, which writes the payload of a loaded JWS as text into a StringBuilder, decoded using the given charset.

Background. In practice, validate the signature before trusting the payload.

Chilkat Delphi ActiveX Downloads

Delphi ActiveX
var
success: Integer;
jws: TChilkatJws;
jwsCompact: WideString;
sbPayload: TChilkatStringBuilder;

begin
success := 0;

jws := TChilkatJws.Create(Self);

//  Load the JWS compact serialization.
jwsCompact := 'eyJhbGciOiJIUzI1NiJ9.VGhpcyBpcyB0aGUgY29udGVudCB0byBzaWduLg.<signature>';
success := jws.LoadJws(jwsCompact);
if (success = 0) then
  begin
    Memo1.Lines.Add(jws.LastErrorText);
    Exit;
  end;

//  Get the JWS payload as text into a StringBuilder, decoded using the given charset.
sbPayload := TChilkatStringBuilder.Create(Self);
success := jws.GetPayloadSb('utf-8',sbPayload.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(jws.LastErrorText);
    Exit;
  end;
Memo1.Lines.Add(sbPayload.GetAsString());