Method and system for authentication

摘要: An entity such as a smart card includes microprocessor means, input/output and PROM storage means which stores set of transformations S i (i=1, . , n) corresponding public factors F 1 n), where =F d (mod N), being the secret key counterpart e associated with modulus N, is product two primes. authentication device values N e, generates an n bit random vector v=v transmitted to Y selected according bits v computed computes X act =Y N) also ref v. If are equal, then authenticated within certain probability. analogous method disclosed for certifying messages be transmitted. In further embodiments, higher degree security achieved by arranging authenticated, or entity, select additional factor plurality factors.