Dynamic key password authentication

Bolstering user authentication

“…Petrovsky [25] demonstrated that a search for a fuzzy cluster in a feature Hilbert space, as we suggested above, results into the following fuzzy clustering problem (4) where H is the feature space containing vectors representing authorization attempts; c is the center of the fuzzy cluster in the feature space corresponding to legitimate user authorization attempts; D is the function of the membership degree vector; N is the number of legitimate authorization attempts used for training; d i ∈[0,1] is the membership degree of image f(x i ) with respect to the fuzzy cluster in the feature space, and, accordingly, the typicalness degree of object xi; m is the fuzziness degree, and eta (η) is the distance from the cluster center, where the typicalness degree of the object is considered to be 0.5.…”

“…The user authentication problem can be tackled in many ways. In modern information systems, passwords remain the most common digital authentication method [1][2][3][4]. Passwords are typically a string of characters used to confirm a user's identity during the authentication process.…”

“…A dictionary attack can be used to pick up the passphrase. Password hash can be leaked directly from their storage location to be cracked offline [4]. Digital signature systems (DSSs), also used for authentication, are free from dictionary attacks [5].…”