[ alokin_n @ 20.07.2011. 21:15 ] @
| Da li neko moze da mi kaze sta tacno ovo znaci i gde se koristi? In practical cryptography, a Physical Unclonable Function or PUF is a function that is embodied in a physical structure and is easy to evaluate but hard to predict. Further, an individual PUF device must be easy to make but practically impossible to duplicate, even given the exact manufacturing process that produced it. A PUF is a (partly) disordered physical system S that can be challenged with so-called external stimuli or challenges Ci, upon which it reacts with corresponding responses termed RCi . Contrary to standard digital systems, a PUF’s responses shall depend on the nanoscale structural disorder present in the PUF. This disorder cannot be cloned or reproduced exactly, not even by its original manufacturer, and is unique to each PUF. Taj PUF prakticno predstavlja funkciju koja je hardverski implementirana i ideja osnovna je da ne moze da se napravi njen duplikat a da on vrlo brzo daje odgovor na postavljeno pitanje ili challange? U tu svrhu se koristi? Unapred hvala |