public Task <CertificateSignResponse> CertificateSign(string sessionToken, RSACryptoServiceProvider rsa, TimeSpan duration)
{
RSAParameters keyInfo = rsa.ExportParameters(false);
string n = BinaryHelper.BigIntegerFromBigEndian(keyInfo.Modulus).ToString();
string e = BinaryHelper.BigIntegerFromBigEndian(keyInfo.Exponent).ToString();
CertificateSignRequest signRequest = new CertificateSignRequest();
signRequest.PublicKey = new PublicKey()
{
Algorithm = "RS", E = e, N = n
};
signRequest.Duration = (long)duration.TotalMilliseconds;
return(Post <CertificateSignRequest, CertificateSignResponse>("certificate/sign", signRequest, sessionToken, "sessionToken", 2 * 32));
}