public static bool Verify(PolicyObjectSigned policy, byte[] cer)
{
if (policy == null)
{
return(false);
}
if (policy.Policy == null)
{
return(false);
}
if (policy.Policy.TimeStampCheck > DateTime.Now.ToUniversalTime().AddMinutes(TimeStampPlusMinus) &&
policy.Policy.TimeStampCheck < DateTime.Now.ToUniversalTime().AddMinutes(-TimeStampPlusMinus))
{
Debug.WriteLine("Timestamp missmatch -+" + TimeStampPlusMinus.ToString() + " minutes");
return(false);
}
string JSON = JsonConvert.SerializeObject(policy.Policy, Formatting.None);
if (Verify(Encoding.UTF8.GetBytes(JSON), policy.Signature, cer) == false)
{
Debug.WriteLine("Verify failed");
return(false);
}
return(true);
}
public static bool Sign(PolicyObjectSigned policy, string CN)
{
if (policy == null)
{
return(false);
}
if (policy.Policy == null)
{
return(false);
}
policy.Policy.TimeStampCheck = DateTime.Now.ToUniversalTime();
string JSON = JsonConvert.SerializeObject(policy.Policy, Formatting.None);
policy.Signature = Sign(Encoding.UTF8.GetBytes(JSON), CN, StoreLocation.LocalMachine);
if (policy.Signature == null)
{
return(false);
}
return(true);
}