Sign a JWS with a Certificate

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetSigningCert, which sets the certificate whose associated private key is used to create a signature.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

bool success = false;

Chilkat.Jws jws = new Chilkat.Jws();

//  Protected header specifying RSASSA-PKCS1-v1_5 with SHA-256 (RS256).
Chilkat.JsonObject header = new Chilkat.JsonObject();
header.UpdateString("alg","RS256");
success = jws.SetProtectedHeader(0,header);
if (success == false) {
    Debug.WriteLine(jws.LastErrorText);
    return;
}

bool bIncludeBom = false;
success = jws.SetPayload("This is the content to sign.","utf-8",bIncludeBom);
if (success == false) {
    Debug.WriteLine(jws.LastErrorText);
    return;
}

//  The file path is relative to the application's current working directory.  An absolute path
//  may also be used.  Supply the path appropriate to your own environment.
//  The PFX password should come from a secure source rather than being hard-coded.
string pfxPassword = "myPfxPassword";

//  Load a certificate that has an associated private key, then set it as the signing certificate for
//  signature 0.  The certificate's private key is used to create the signature.
Chilkat.Cert cert = new Chilkat.Cert();
success = cert.LoadPfxFile("qa_data/signer.pfx",pfxPassword);
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

success = jws.SetSigningCert(0,cert);
if (success == false) {
    Debug.WriteLine(jws.LastErrorText);
    return;
}

string jwsCompact = jws.CreateJws();
if (jws.LastMethodSuccess == false) {
    Debug.WriteLine(jws.LastErrorText);
    return;
}

Debug.WriteLine(jwsCompact);