public static bool Verify(PolicyObjectListSigned policylist, byte[] cer)
{
if (policylist == null)
{
return(false);
}
if (policylist.Items == null)
{
return(false);
}
if (policylist.TimeStampCheck > DateTime.Now.ToUniversalTime().AddMinutes(TimeStampPlusMinus) &&
policylist.TimeStampCheck < DateTime.Now.ToUniversalTime().AddMinutes(-TimeStampPlusMinus))
{
Debug.WriteLine("Timestamp missmatch -+" + TimeStampPlusMinus.ToString() + " minutes");
return(false);
}
string JSON = policylist.TimeStampCheck.ToString("s") + "-" + policylist.Items.ToString();
if (Verify(Encoding.UTF8.GetBytes(JSON), policylist.Signature, cer) == false)
{
Debug.WriteLine("Verify failed");
return(false);
}
return(true);
}
public static bool Sign(PolicyObjectListSigned policylist, string CN)
{
if (policylist == null)
{
return(false);
}
if (policylist.Items == null)
{
return(false);
}
policylist.TimeStampCheck = DateTime.Now.ToUniversalTime();
string JSON = policylist.TimeStampCheck.ToString("s") + "-" + policylist.Items.ToString();
policylist.Signature = Sign(Encoding.UTF8.GetBytes(JSON), CN, StoreLocation.LocalMachine);
if (policylist.Signature == null)
{
return(false);
}
return(true);
}
