Patent ID: 11907690
Assignee: TOBESOFT CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. The operating method of an electronic terminal apparatus of claim 9, wherein the user authentication server stores the p+1 hash functions in the memory, separates the disposable authentication number into the front p/2-digit first part number and the rear p/2-digit second part number based on the central axis when the confirmation request command is received while the encrypted first identification code and the disposable authentication number are received from the electronic terminal apparatus, and then performs the modulo-2 operation for each p/2 numbers constituting the first part number to create the first partial code, performs the modulo-2 operation for each of p/2 numbers constituting the second part number to create the second partial code, and then performs the exclusive OR for the first partial code and the second partial code to create the operation code, and computes the sum of the Hamming weights for the first partial code and the second partial code, respectively, and then extract the first hash function in which the sum of the Hamming weights is allocated as the unique number among the p+1 hash functions, creates the first hash value by applying the operation code as the input to the first hash function, and then decodes the encrypted first identification code into the first hash value to restore the first identification code.