Abstract: An apparatus and method for performing an operation which are secure against side-channel attack are provided. According to one embodiment of the present disclosure, the apparatus includes a first outputter configured to output a first output value corresponding to a seed value using a first parameter candidate value set, a second outputter configured to output a second output value using a second parameter candidate value set wherein the second output value corresponds to the seed value and is capable of being generated using the first output value, a third outputter configured to output a third output value using the seed value and the first output value, and a fourth outputter configured to output a fourth output value using the second output value and the third output value, wherein the fourth output value is capable of being generated using the seed value.

Abstract: An apparatus and method for performing an operation which are secure against side-channel attack are provided. According to one embodiment of the present disclosure, the apparatus includes a first extractor configured to extract one or more first parameter candidate values corresponding to a seed value from a first parameter candidate value set, a first outputter configured to output a first output values using the extracted first parameter candidate values, a second extractor configured to extract one or more second parameter candidate values corresponding to the seed value from a second parameter candidate value set, and a second outputter configured to output a second output value using the extracted second parameter candidate values wherein the second output value is capable of being generated using the first output value.

Abstract: Disclosed are a system and method for key exchange based on user authentication information. The system for key exchange based on user authentication information includes a client configured to generate ciphertext corresponding to authentication information of a user of the client using a random number for the client and server identification information, and a server configured to decrypt the ciphertext received from the client using a private key for the server corresponding to the server identification information to restore the authentication information, authenticate the client using the restored authentication information, and generate a session key for the server corresponding to the authenticated client.

Abstract: A message server and a message processing apparatus including the same are provided. According to the embodiments of the present disclosure, when the device management module is not available to be used, a message is directly delivered to the application client through the third party message server so that the reliability of the message forwarded between a sender side and a receiver side can be ensured.

Abstract: There is provided a wireless communication device capable of providing two-way communication while minimizing the consumption of power so as to be continuously operable for a long period of time simply with battery power, without the aid of a constant power source. The wireless communication device includes: a wireless network interface connected to an access point (AP), which provides wireless local area network (WLAN) access; and a session maintenance packet transmission controller controlling the wireless network interface to repeatedly transmit a session maintenance packet, wherein the session maintenance packet includes a MAC keep-alive message, an address resolution protocol (ARP) response message, and a hole punching message.

Abstract: An apparatus and method for detecting a container rootkit are provided. The apparatus for detecting a container rootkit according to one example embodiment of the present disclosure includes a detection target acquirer configured to acquire, as a detection target, a copy of a kernel module program configured to be executed on a host computer system, wherein the host computer system is configured to run one or more containers; and a rootkit detector configured to detect whether a rootkit is present in the detection target based on whether the detection target contains program code for modifying operation of a pre-defined kernel function.

Abstract: Disclosed are an apparatus and a method for encryption. The apparatus includes, a key table generation unit configured to generate random values derived from a seed value and generate a key table including the generated random values, and an encryption unit configured to encrypt a plain text data block by generating an encryption algorithm by repeatedly combining the generated key table with a permutation function in a crossing manner, and using the generated encryption algorithm.

Abstract: There are provided a message communication device and method. A message communication device according to an exemplary embodiment includes a header modifying unit configured to modify a message header by adding additional information used together with an identity when a public key corresponding to the identity of a recipient is generated to be the message header, and a message transmitting unit configured to transmit a message including data encrypted based on the public key and the modified message header.

Abstract: Provided are a method of synchronizing state information, the method comprises receiving first state information from a first terminal among a plurality of terminals, setting first synchronization identification information in the received first state information, transmitting the first state information and the first synchronization identification information set in the first state information to the terminals, receiving second state information and second synchronization identification information set in the second state information from a second terminal among the terminals, determining whether the received second state information is a synchronization target by judging whether the received first synchronization identification information matches the received second synchronization identification information and not transmitting the received second state information to the terminals when determining that the received second state information is not the synchronization target.

Abstract: Provided is a method for generating a foreground in a foreground generating apparatus, the method including: extracting a plurality of foregrounds by applying a plurality of background models to an image, the plurality of background models having different ranges of a pixel variance value; generating an intersection foreground based on an intersection region among the extracted plurality of foregrounds; generating a union foreground based on a union region among the extracted plurality of foregrounds; and generating a final foreground based on the intersection foreground and the union foreground.

Abstract: An encryption apparatus includes a table generator configured to generate a key table based on each of a plurality of encryption keys, the plurality of encryption keys having different attributes, generate a key-independent table independent of the plurality of encryption keys, and generate an encryption algorithm based on the key table and the key-independent table; and a transmitter configured to transmit the key table and the key-independent table to a client terminal, wherein the table generator and the transmitter are implemented by using at least one hardware processor.

Abstract: Method and apparatus for security checking of image for container are provided, one of methods comprises, receiving an image for creating a container, wherein the container is an isolation region for an application executable on a host operating system, identifying one or more layers composing the image by parsing the image, collecting a path of a security configuration file, a security check object, from the one or more layers, and searching the collected path and checking whether a security configuration file violating a predetermined security policy is present.

Abstract: Provided are an authentication system and method, and a user terminal, an authentication server, and a service server for performing the authentication method. According to embodiments of the present invention, a complex authentication procedure carried out in the conventional FIDO authentication technology is simplified using a second public key of which the integrity has been checked, so that a transaction occurring in an authentication procedure can be minimized. Such an authentication method is advantageously suitable to provide a service requiring fast authentication, such as security buying and selling or futures trading.

Abstract: An authentication system and method are provided. According to the embodiments of the present disclosure, it is possible to provide a secure authentication service capable of maintaining personal privacy by enabling authentication while preventing personal information used for personal authentication, such as biometric information, from being exposed in the authentication process.

Abstract: Provided is a video analysis (VA) method comprises calculating, by a VA apparatus, a size of each of a plurality of frames by summing sizes of a plurality of packets constituting each of the plurality of frames, analyzing, by the VA apparatus, the size of each of the plurality of frames constituting a video to determine a pattern of the sizes of the plurality of frames and determining, by the VA apparatus, whether there is a motion in the video based on the size pattern.

Abstract: Provided are a conference system and a method for controlling bandwidth thereof. According to embodiments of the present disclosure, the conference system enables a bandwidth pattern obtained from one terminal to be shared with other terminals connected to the conference in the same area as the terminal, such that a process of identifying bandwidths of users connected to the conference in the area may be omitted, thereby reducing a time required for stabilizing a service quality.

Abstract: A conference system and a method of switching a connection terminal in the conference system are provided. The conference system according to one embodiment of the present disclosure includes a web conference server configured to receive a request for switching a connection terminal from a first terminal and acquire identification information of a second terminal included in the request for switching a connection terminal; and an audio conference server configured to process a connection of the second terminal to an audio conference and transmit identification information of the second terminal to the web conference server, wherein the web conference server compares the identification information of the second terminal acquired from the first terminal with the identification information of the second terminal received from the audio conference server and updates participant information of the audio conference, which is mapped with participant information of the web conference.

Abstract: A conferencing apparatus and a method for switching an access terminal therein are provided. The conferencing apparatus according to one embodiment of the present disclosure includes: a conference information management module configured to generate mapping information for terminal identification information of a first terminal and access information of a conference participant who is accessing a conference through the first terminal; and an access switch module configured to provide a token corresponding to the mapping information to the first terminal according to an access terminal switch request from the first terminal and, when the token is received from a second terminal, switch a terminal of the conference participant from the first terminal to the second terminal according to validity of the received token.

Abstract: A method of determining an optimal statistical model that can best show the statistical characteristics of given data and an apparatus performing the method are provided. The method acquires target data to be analyzed, where the target data consists of a plurality of independent variables and a dependent variable. Then, the method determines one or more independent variables based on variances in the target data, establishes a first statistical model that shows the relationship between the m independent variables and the dependent variable, and calculates first error of the first statistical model. The method generates a plurality of first statistical models by repeatedly performing the steps of establishing the first statistical model and calculating the first error while changing the value of m, and selects a statistical model with minimum error as an optimal statistical model for the target data.

Abstract: Provided are an apparatus and a method of compositing vehicle periphery images. The method of compositing vehicle periphery images includes selecting an object of interest from a rear image, adjusting a view area of the rear image based on the object of interest, and compositing a left image, the rear image, and a right image by reflecting a composite reference line according to the view area.