(JavaScript) Create JWT Using HS256, HS384, or HS512
Demonstrates 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:
- nbf: Not Before Time
- exp: Expiration Time
- iat: Issue At Time
var success = false;
// 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.
var jwt = new CkJwt();
// Build the JOSE header
var jose = new CkJsonObject();
// Use HS256. Pass the string "HS384" or "HS512" to use a different algorithm.
success = jose.AppendString("alg","HS256");
success = jose.AppendString("typ","JWT");
// Now build the JWT claims (also known as the payload)
var claims = new CkJsonObject();
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.
var 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;
var strJwt = jwt.CreateJwt(jose.Emit(),claims.Emit(),"secret");
console.log(strJwt);
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