Delphi DLL

Set the JWS Payload

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetPayload, which sets the content to be signed. The charset converts the text to bytes, and a flag controls whether a byte-order mark is included.

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

begin
success := False;

jws := CkJws_Create();

//  Set the payload (the content to be signed).  The 2nd argument is the charset used to convert the
//  text to bytes, and the 3rd controls whether a byte-order mark is included.
bIncludeBom := False;
success := CkJws_SetPayload(jws,'This is the content to sign.','utf-8',bIncludeBom);
if (success = False) then
  begin
    Memo1.Lines.Add(CkJws__lastErrorText(jws));
    Exit;
  end;
Memo1.Lines.Add('Payload set.');

CkJws_Dispose(jws);