AES šifrovanie je jedným zo spôsobov zabezpečenia dát. Ide o tzv. symetrický algoritmus, čo znamená, že sa rovnaký šifrovací kľúč používa na zašifrovanie aj dešifrovanie. Dĺžka tohto kľúča môže byť 128 až 256 bitov a doba potrebná na prelomenie šifry je taká dlhá, že sa v súčasnosti považuje za prakticky neprelomiteľnú.
Dáta na šifrovanom flash disku zostanú nečitateľné, kým nezadáte svoje heslo. Šifrovací kľúč je ukrytý priamo na flashke a nevie o ňom tak nikto – ani majiteľ.
Ako je to možné? Pri dĺžke kľúča 128 bitov je počet možných kombinácií 2128. Otestovať toľko rôznych kľúčov by dnešným počítačom zabralo zhruba 150-násobok veku vesmíru. Navyše, pretože je AES šifrovanie veľmi rýchle, väčšinou sa používa hneď 256-bitový kľúč. Dá sa tak pokojne povedať, že vaše dáta budú na flashke alebo disku s AES šifrovaním v bezpečí.
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