Delphi DLL

Set the JWS Payload from a StringBuilder

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetPayloadSb, which sets the payload to be signed from a StringBuilder.

Background. JWS (JSON Web Signature) integrity-protects a payload with a signature or MAC. The header alg names the algorithm; this example uses HMAC-SHA256 (HS256) with a symmetric MAC key.

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Delphi DLL

var
success: Boolean;
jws: HCkJws;
sbPayload: HCkStringBuilder;
bIncludeBom: Boolean;

begin
success := False;

jws := CkJws_Create();

//  Set the payload from a StringBuilder.
sbPayload := CkStringBuilder_Create();
CkStringBuilder_Append(sbPayload,'This is the content to sign.');

bIncludeBom := False;
success := CkJws_SetPayloadSb(jws,sbPayload,'utf-8',bIncludeBom);
if (success = False) then
  begin
    Memo1.Lines.Add(CkJws__lastErrorText(jws));
    Exit;
  end;
Memo1.Lines.Add('Payload set.');

CkJws_Dispose(jws);
CkStringBuilder_Dispose(sbPayload);