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