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(Mono C#) Create JWT Using HS256, HS384, or HS512Demonstrates how to create a JWT using HS256, HS384, or HS512. (HS256 is JWT's acronym for HMAC-SHA256.) When HMAC is used, the secret is a shared secret (i.e. password) that both client and server know beforehand. This example also demonstrates how to include time constraints:
// Demonstrates how to create an HMAC JWT using a shared secret (password). // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.Jwt jwt = new Chilkat.Jwt(); // Build the JOSE header Chilkat.JsonObject jose = new Chilkat.JsonObject(); // Use HS256. Pass the string "HS384" or "HS512" to use a different algorithm. bool success = jose.AppendString("alg","HS256"); success = jose.AppendString("typ","JWT"); // Now build the JWT claims (also known as the payload) Chilkat.JsonObject claims = new Chilkat.JsonObject(); success = claims.AppendString("iss","http://example.org"); success = claims.AppendString("sub","John"); success = claims.AppendString("aud","http://example.com"); // Set the timestamp of when the JWT was created to now. int curDateTime = jwt.GenNumericDate(0); success = claims.AddIntAt(-1,"iat",curDateTime); // Set the "not process before" timestamp to now. success = claims.AddIntAt(-1,"nbf",curDateTime); // Set the timestamp defining an expiration time (end time) for the token // to be now + 1 hour (3600 seconds) success = claims.AddIntAt(-1,"exp",curDateTime + 3600); // Produce the smallest possible JWT: jwt.AutoCompact = true; string strJwt = jwt.CreateJwt(jose.Emit(),claims.Emit(),"secret"); Debug.WriteLine(strJwt); |
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