Korea Internet & Security Agency

Yonsei University

Sa Rang Na

Hwan Mook Kim

Eun Jung Ko

Tae Eun Kim

Dae Il Jang

Jee Soo Jurn

Eun Byul Lee

Tae Kyoung Kwon

Provided is an Internet protocol (IP) generation method. The method is performed by an IP generation apparatus comprising one or more processors and memory and includes: forming a plurality of initialized partial numbers by dividing a decimal number indicating a count of IP addresses that can be generated; changing the partial numbers according to a predetermined rule; generating an IP decimal number by linking the changed partial numbers; generating a random IP address from the IP decimal number; and generating a plurality of different random IP addresses with improved time efficiency, by sequentially repeating the changing of the partial numbers, the generating of the IP decimal number and the generating of the random IP address.

Random IP generation method and apparatus

The present disclosure discloses a pattern input apparatus and a pattern input method for user authentication. According to the present disclosure, differently from the pattern function of the related art, the user does not directly input a pattern through a pattern lock interface, but inputs the pattern using a virtual manipulation interface which is separately provided. Therefore, it is strong to a smudge attack. The pattern input method of the present disclosure includes providing a virtual manipulation interface to input the pattern on the screen of the device to the user, separately from a pattern lock interface; and receiving the pattern through the virtual manipulation interface.

Pattern input apparatus and method, and recording medium using the same

Provided are a method and an apparatus for identifying computer system information which process banner information of an open port of a computer system, create a CPE tree by analyzing a CPE dictionary, and search keywords of respective levels of the CPE tree in a banner and generate one or more CPEs based on the CPE tree observing a format of the CPE dictionary to select CPEs which most match information of an operating system or an application program of a specific computer system among various CPE candidates and rapidly and easily identify CPE type vulnerability information which can interlock with CVE vulnerability information.

Method and apparatus for identifying vulnerability information using keyword analysis for banner of open port

A device information gathering method is provided. The device information gathering method includes: allowing a device information gathering apparatus to transmit a packet to a randomly generated Internet Protocol (IP) address and to receive a syn-ack packet as a response; allowing the device information gathering apparatus to parse the syn-ack packet and thus to extract Transmission Control Protocol (TCP)/IP fields; and allowing the device information gathering apparatus to compare the TCP/IP fields and an OS fingerprint rule, which is in JavaScript Object Notation (JSON) format, and thus to generate an OS fingerprint of the randomly generated IP address, wherein the OS fingerprint rule stores Operating Systems (OSs) and TCP/IP field values corresponding to versions of the OSs as attribute-value pairs.

Rule-based fingerprint generation methods and apparatus

Provided is an Internet protocol (IP) generation method. The method is performed by an IP generation apparatus and includes: forming a plurality of initialized partial numbers by dividing a decimal number indicating a count of IP addresses that can be generated; changing the partial numbers according to a predetermined rule; generating an IP decimal number by connecting the changed partial numbers; generating a random IP address from the IP decimal number; and generating a plurality of different random IP addresses by sequentially repeating the changing of the partial numbers, the generating of the IP decimal number and the generating of the random IP address.

Growing community of inventors

Seoul, South Korea

Sa Rang Na