C#

Create JWT using a Certificate's Private Key

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using a certificate's private key. C#

bool success = false;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  Demonstrates how to create a JWT using an certificate's private key.

Chilkat.Cert cert = new Chilkat.Cert();

//  Load an ECC private key from a PEM file.
success = cert.LoadPfxFile("c:/temp/myPfx.pfx","pfxPassword");
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

Chilkat.Jwt jwt = new Chilkat.Jwt();

//  Build the JOSE header
Chilkat.JsonObject jose = new Chilkat.JsonObject();
//  Note: The IsEcdsa function was added in Chilkat v10.1.0
if (cert.IsEcdsa() == true) {
    //  Use ES256.  Pass the string "ES384" or "ES512" to use ECC with SHA-384 or SHA-512.
    jose.AppendString("alg","ES256");
}
else {
    //  Probably RSA...
    //  Use RS256.  Pass the string "RS384" or "RS512" to use RSA with SHA-384 or SHA-512.
    jose.AppendString("alg","RS256");
}

jose.AppendString("typ","JWT");

//  Now build the JWT claims (also known as the payload)
Chilkat.JsonObject claims = new Chilkat.JsonObject();
claims.AppendString("iss","http://example.org");
claims.AppendString("sub","John");
claims.AppendString("aud","http://example.com");

//  Set the timestamp of when the JWT was created to now.
int curDateTime = jwt.GenNumericDate(0);
claims.AddIntAt(-1,"iat",curDateTime);

//  Set the "not process before" timestamp to now.
claims.AddIntAt(-1,"nbf",curDateTime);

//  Set the timestamp defining an expiration time (end time) for the token
//  to be now + 1 hour (3600 seconds)
claims.AddIntAt(-1,"exp",curDateTime + 3600);

//  Produce the smallest possible JWT:
jwt.AutoCompact = true;

//  Create the JWT token.
string token = jwt.CreateJwtCert(jose.Emit(),claims.Emit(),cert);

Debug.WriteLine(token);

//  Example output:
//  eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwOi8vZXhhbXBsZS5vcmciLCJzdWIiOiJKb2huIiwiYXVkIjoiaHR0cDovL2V4YW1wbGUuY29tIiwiaWF0IjoxNDg1NzA4NzkyLCJuYmYiOjE0ODU3MDg3OTIsImV4cCI6MTQ4NTcxMjM5Mn0.wqsuyJpxJ073ox-lOiLFqG1lQocXe4hGf2XGZJRrO3qn0UusxI_bu3Gzky8gBsH4sA4u9TWZn5M-1wYMMIJk6Q