protected override IObservable <byte[]> BeforeWriteToDiskFilter(byte[] data, IScheduler scheduler)
{
try
{
var ret = Observable.Return(DataProtectionApi.Encrypt(DataProtectionApi.KeyType.UserKey, data, null, null));
// NB: MemoizedRequests will be null as we're disposing
if (MemoizedRequests != null)
{
lock (MemoizedRequests) MemoizedRequests.InvalidateAll();
}
return(ret);
}
catch (Exception ex)
{
return(Observable.Throw <byte[]>(ex));
}
}
protected override IObservable <byte[]> AfterReadFromDiskFilter(byte[] data, IScheduler scheduler)
{
try
{
string dontcare;
var ret = Observable.Return(DataProtectionApi.Decrypt(data, null, out dontcare));
// NB: MemoizedRequests will be null as we're disposing
if (MemoizedRequests != null)
{
lock (MemoizedRequests) MemoizedRequests.InvalidateAll();
}
return(ret);
}
catch (Exception ex)
{
return(Observable.Throw <byte[]>(ex));
}
}
protected override IObservable <byte[]> AfterReadFromDiskFilter(byte[] data, IScheduler scheduler)
{
try
{
string dontcare;
#if SILVERLIGHT
var ret = Observable.Return(ProtectedData.Unprotect(data, null));
#else
var ret = Observable.Return(ProtectedData.Unprotect(data, null, DataProtectionScope.CurrentUser));
#endif
// NB: MemoizedRequests will be null as we're disposing
if (MemoizedRequests != null)
{
lock (MemoizedRequests) MemoizedRequests.InvalidateAll();
}
return(ret);
}
catch (Exception ex)
{
return(Observable.Throw <byte[]>(ex));
}
}
