(Go) 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.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // 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.

    cert := chilkat.NewCert()

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

    jwt := chilkat.NewJwt()

    // Build the JOSE header
    jose := chilkat.NewJsonObject()
    // 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)
    claims := chilkat.NewJsonObject()
    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.
    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.SetAutoCompact(true)

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

    fmt.Println(*token)

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

    cert.DisposeCert()
    jwt.DisposeJwt()
    jose.DisposeJsonObject()
    claims.DisposeJsonObject()