public string CalculateSignature(string base64UrlEncodedHeader, string base64UrlEncodedPayload)
{
var input = $"{base64UrlEncodedHeader}{DefaultJwt.Separator}{base64UrlEncodedPayload}";
var hmac = new HmacGenerator(this.signingKey, Encoding.UTF8).ComputeHmac(input);
return Base64.EncodeUrlSafe(hmac);
}
private static byte[] SignHmac256(string data, byte[] key, Encoding encoding)
{
try
{
var hmac = new HmacGenerator(key, encoding);
return hmac.ComputeHmac(data);
}
catch (Exception e)
{
throw new RequestAuthenticationException("Unable to calculate a request signature.", e);
}
}