 vse, da je težko izročite, če je izročite. Nažalne motivacije je, sanje, že Shafi spravila lepovstveni spravil. Neljavna večga vsoga, kriptografa be delala v vse, načaljene vse, in ne več, da se je tako bravo, vse svoje programu. kriptosystems in kleptografija je početila, tudi 20 rov, je in atak na nostrih sestemi in imam nekaj o implementaciju atakov, hrvori in zelo. Zato je tudi klasiči kleptografiji atakov na sestemi. One involve biasing the randomness and another one is introducing hidden triggers that an adversary who knows about them exclusively can exploit. And I mainly will deal with this one. And here is an example. So we have a signature scheme. The system is asked to sign. There is a secret key generation sign. It is signed. And then the bad guy comes. You see there is a bug in the ant in the system. Ants are very prevalent in Santa Barbara. So it's okay. And as a result, the secret key, for example, is directly or indirectly, is leaked to the attacker. It can be also in notification. The bad guy asks to verify with the trigger. And it always will pass. Okay. And then people started after it was found out that, you know, Snowden revealed that this actually is being fielded. So we have to do something. So people, a few efforts started to deal with kleptografi. We called it kleptografi, clipping the power of kleptografic attack. And we can either do prevention or detection. There are different levels of detection. In order to change the crypto system, we have to change the architecture. So one of the architecture for detection is putting a component in your trust base, in your system that is called a watchdog or some judge that will be able to detect what's going on. And there are different levels of resources. And we measure the resources with the barking power of the watchdog. So omnis watchdog that has private state and it has access to all the transcript. It's like a dog that's barking loudly. It has a big barking capability. And online watchdog is barking all the time. And we can run. And we always want we care, we care less resources. It's a watchdog that comes bark at the beginning and fall asleep. And it's important when we design architecture and new architecture with a trusted component to minimize as much as possible the resources. So in previous, there have been a few before. One with an online watching dog, one with an active online. And some of the co-authors of the current paper did online watchdog with kind of modifying existing signatures. And the question is can we do it in offline watchdog? That comes inspect the system, checking the system in some sense. And then the system can go on and work without this active trusted component all the time putting an eye on it. And okay, yes, we can. We have one construction, again based on full domain hash. With, of course, new techniques. And uses also the paper that is going to be presented on Thursday. And the second construction, which is kind of a generic transformation. So, yes, we can. And we can build more trusted systems with certain assumptions on the architecture. We can minimize those assumptions. So, if we are there to help others, we should first help ourselves. Thank you.