private static string CreateJwt()
{
DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
DateTime now = DateTime.UtcNow;
var claimset = new
{
iss = ISS,
sub = CLIENT_ID,
aud = "https://go.nexusgroup.com",
iat = (int)now.Subtract(UnixEpoch).TotalSeconds,
exp = (int)now.AddMinutes(55).Subtract(UnixEpoch).TotalSeconds
};
// header
var header = new { typ = "JWT", alg = JsonWebKeySignatureAlgorithm.RS256, kid = KEY };
// encoded header
var headerSerialized = JsonConvert.SerializeObject(header);
var headerBytes = Encoding.UTF8.GetBytes(headerSerialized);
var headerEncoded = System.Convert.ToBase64String(headerBytes);
// encoded claimset
var claimsetSerialized = JsonConvert.SerializeObject(claimset);
var claimsetBytes = Encoding.UTF8.GetBytes(claimsetSerialized);
var claimsetEncoded = System.Convert.ToBase64String(claimsetBytes);
// input
var input = String.Join(".", headerEncoded, claimsetEncoded);
var inputBytes = Encoding.UTF8.GetBytes(input);
var signatureEncoded = KeyVaultUtil.Sign(inputBytes);
// jwt
return(String.Join(".", headerEncoded, claimsetEncoded, signatureEncoded));
}
