public bool ValidateCanary(string canaryString)
{
byte[] userContextIdBinary;
byte[] timeStampBinary;
byte[] a;
if (!Canary.ParseCanary(canaryString, out userContextIdBinary, out timeStampBinary, out a))
{
return(false);
}
if (Canary.IsExpired(timeStampBinary))
{
return(false);
}
byte[] b = Canary.ComputeHash(userContextIdBinary, timeStampBinary, this.LogonUniqueKey);
return(Canary.AreEqual(a, b));
}
public static Canary RestoreCanary(string canaryString, string logonUniqueKey)
{
byte[] userContextIdBinary;
byte[] timeStampBinary;
byte[] b;
if (Canary.ParseCanary(canaryString, out userContextIdBinary, out timeStampBinary, out b))
{
if (Canary.IsExpired(timeStampBinary))
{
return(null);
}
byte[] a = Canary.ComputeHash(userContextIdBinary, timeStampBinary, logonUniqueKey);
if (Canary.AreEqual(a, b))
{
return(new Canary(userContextIdBinary, timeStampBinary, logonUniqueKey));
}
}
return(null);
}