Device for authenticating user's access rights to resources and method

摘要: Both of a user side and protect such as programmer an application need not handle large number inherent information authentication keys. An access ticket generation device generates from unique identifying rights feature information. As security characteristic information, there is used secret key elliptic curve encryption or ElGamal encryption. A proof data receives the ticket, converts received verification into by use returns resultant to device. The decrypts above-mentioned verifies correct only when combination in correct.