Patents by Inventor Sang-gyoo Sim

Sang-gyoo Sim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200242081
    Abstract: Provided are a device and method for sharing big data using a blockchain. The method of sharing big data using a blockchain includes receiving a search condition from a user terminal, searching a blockchain network for metadata meeting the received search condition and acquiring found metadata, acquiring shared data stored in a distributed storage using the acquired metadata, and transmitting the acquired shared data to the user terminal.
    Type: Application
    Filed: January 30, 2019
    Publication date: July 30, 2020
    Inventors: Seok Woo Lee, Duk Soo Kim, Sang Gyoo Sim, Min Woo Nam, Kwon Koo Kwak, Jae Yeon Yoon
  • Publication number: 20200228552
    Abstract: Disclosed is a method of detecting whether a groupware user's behavior is an abnormal behavior. The method includes acquiring a uniform resource identifier (URI) from the user's behavior, generating a URI sequence from the URI on the basis of a predetermined time interval, preprocessing the URI sequence to generate a primitive URI sequence, calculating a log probability value from the primitive URI sequence, and detecting whether the user's behavior is an abnormal behavior on the basis of the log probability value and a predetermined threshold value.
    Type: Application
    Filed: February 15, 2019
    Publication date: July 16, 2020
    Inventors: Seung Young PARK, Sang Gyoo SIM, Duk Soo KIM, Seok Woo LEE, Myung Jin KIM
  • Publication number: 20200213107
    Abstract: Provided are a method and device for performing authentication using a hardware security module (HSM) in a one machine-to-machine (oneM2M) environment. The method of performing authentication using an HSM in a oneM2M environment includes extracting a symmetric key stored in the HSM using a security application programming interface (API), generating a first value and a second value using the extracted symmetric key, and performing mutual authentication with an M2M enrolment function (MEF) server through transport layer security pre-shared key ciphersuites (TLS-PSK) using the first value and the second value.
    Type: Application
    Filed: June 5, 2019
    Publication date: July 2, 2020
    Inventors: Sung Ok CHOI, Young In PARK, Sang Gyoo SIM, Duk Soo KIM, Seok Woo LEE
  • Publication number: 20200202160
    Abstract: Disclosed herein are a method and an apparatus for detecting abnormal traffic based on a convolutional autoencoder (CAE). The method of detecting abnormal traffic based on the CAE may include converting a character string of normal traffic into an image, learning the converted image using the CAE, and detecting abnormal traffic by inputting target traffic to the learned CAE.
    Type: Application
    Filed: December 24, 2018
    Publication date: June 25, 2020
    Inventors: Seung Young PARK, Sang Gyoo SIM, Duk Soo KIM, Seok Woo LEE, Myung Jin KIM
  • Publication number: 20200169420
    Abstract: A method for managing an enrollment certificate in an SCMS for V2X communication may comprise receiving a message requesting an authority for generating a CSR from a DCM; updating device certification data through a certification laboratory that manages performance and requirements of an EE, and verifying the EE that requested issuance of an enrollment certificate to the DCM by using the updated device certification data; transmitting response data indicating the authority for generating a CSR to the DCM based on a result of the verification; receiving a CSR generated according to the response data from the DCM; and verifying the received CSR, and requesting response data for the CSR to an ECA based on a result of the verification.
    Type: Application
    Filed: August 30, 2019
    Publication date: May 28, 2020
    Inventors: Seok Woo LEE, Duk Soo KIM, Eui Seok KIM, Sang Gyoo SIM, Jong Guk LEE, Dong Hoon KO, Jung Ook KIM, Sang Won SEO, Jeong Eun KI, Seung Hoon LEE
  • Patent number: 10432653
    Abstract: Disclosed is a method for detecting anomaly traffic using an autoencoder based on an inception-residual network-v2 which is one type of machine learning methods, the method including generating a plurality of encoders on the basis of traffic data for learning; generating a plurality of pieces of image data on the basis of traffic data for each session, which is a detection target; and determining whether the traffic data for each session is abnormal using at least one among the traffic data for learning, the plurality of encoders, and the plurality of pieces of image data.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: October 1, 2019
    Assignee: PENTA SECURITY SYSTEMS INC.
    Inventors: Sang Gyoo Sim, Seok Woo Lee, Seung Young Park, Duk Soo Kim
  • Patent number: 10382835
    Abstract: Provided are an apparatus and method for verifying the integrity of a video file. The method includes receiving a video file and model information of a video recording device which is claimed to have recorded a verification-target video, extracting a header structure and a header value of the video file, extracting characteristic information according to the received model information of the video recording device from a characteristic database, and determining whether the extracted characteristic information according to the model information of the video recording device corresponds to the header structure and the header value of the video file.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: August 13, 2019
    Assignee: Penta Security Systems Inc.
    Inventors: Sang Gyoo Sim, Eui Seok Kim, Duk Soo Kim, Seok Woo Lee, Wan Yeon Lee
  • Publication number: 20190095301
    Abstract: Provided is a method for detecting an abnormal session including a request message received by a server from a client and a response message generated by the server, the method including transforming at least a part of messages included in the session into data in the form of a matrix, transforming the data in the form of the matrix into a representation vector a dimension of which is lower than a dimension of the matrix of the data using a convolutional neural network, and determining whether the session is abnormal by arranging the representation vectors obtained from the messages in an order in which the messages are generated to compose a first representation vector sequence, and analyzing the first to representation vector sequence using an long short term memory (LSTM) neural network.
    Type: Application
    Filed: February 28, 2018
    Publication date: March 28, 2019
    Inventors: Sang Gyoo SIM, Duk Soo KIM, Seok Woo LEE, Seung Young PARK
  • Publication number: 20190050728
    Abstract: Provided is a method of machine learning for a convolutional neural network (CNN). The method includes: receiving input target data; determining whether to initiate incremental learning on the basis of a difference between a statistical characteristic of the target data with respect to the CNN and a statistical characteristic of previously used training data with respect to the CNN; determining a set of kernels with a high degree of mutual similarity in each convolution layer included in the CNN when the incremental learning is determined to be initiated; and updating a weight between nodes to which kernels included in the set of kernels with a high degree of mutual similarity are applied.
    Type: Application
    Filed: February 28, 2018
    Publication date: February 14, 2019
    Inventors: Sang Gyoo SIM, Seok Woo LEE, Seung Young PARK, Duk Soo KIM
  • Publication number: 20190036952
    Abstract: Disclosed is a method for detecting anomaly traffic using an autoencoder based on an inception-residual network-v2 which is one type of machine learning methods, the method including generating a plurality of encoders on the basis of traffic data for learning; generating a plurality of pieces of image data on the basis of traffic data for each session, which is a detection target; and determining whether the traffic data for each session is abnormal using at least one among the traffic data for learning, the plurality of encoders, and the plurality of pieces of image data.
    Type: Application
    Filed: December 5, 2017
    Publication date: January 31, 2019
    Inventors: Sang Gyoo SIM, Seok Woo Lee, Seung Young Park, Duk Soo Kim
  • Publication number: 20180332364
    Abstract: Provided are an apparatus and method for verifying the integrity of a video file. The method includes receiving a video file and model information of a video recording device which is claimed to have recorded a verification-target video, extracting a header structure and a header value of the video file, extracting characteristic information according to the received model information of the video recording device from a characteristic database, and determining whether the extracted characteristic information according to the model information of the video recording device corresponds to the header structure and the header value of the video file.
    Type: Application
    Filed: May 10, 2018
    Publication date: November 15, 2018
    Inventors: Sang Gyoo SIM, Eui Seok KIM, Duk Soo KIM, Seok Woo LEE, Wan Yeon LEE
  • Patent number: 9972147
    Abstract: A smart badge of the present invention comprises a communication unit capable of performing wireless communication, an OTP (one-time password) storage unit configured to store therein OTP information for generating one-time password (OTP), a display unit configured to display information, an image storage unit configured to store therein at least two images to be displayed on the display unit, a personal information storage unit configured to store therein user's personal information, an input unit that is to be used for selecting an image to be displayed on the display unit, and a control unit configured to control the respective constitutional elements.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 15, 2018
    Assignee: Penta Security Systems Inc.
    Inventors: Seok Woo Lee, Duk Soo Kim, Sang Gyoo Sim, Kyung Moon Nam, Yeon Tae Kim
  • Patent number: 9853953
    Abstract: A method of transferring a rights object (RO) and an electronic device are provided. The method includes generating a secure RO by encrypting an RO including usage rights information regarding digital content and transferring the secure RO from a first device to a second device.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: December 26, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yeo-Jin Kim, Yun-Sang Oh, Sang-Gyoo Sim, Kyung-im Jung, Ji-Soo Kim
  • Patent number: 9817969
    Abstract: There are provided a device for detecting a cyber attack and a method thereof. The device for detecting a cyber attack includes an event receiving unit configured to receive an event generated in at least one user terminal according to a behavior of a user who accesses a web server and uses web services provided from a web page, a model generating unit configured to generate an event model by extracting an event pattern corresponding to a behavior of the user based on the received event, and an attack detecting unit configured to detect whether access of the web server by a specific user terminal is an attack by comparing the event model with an event received from the specific user terminal. Therefore, various forms of cyber attacks are rapidly and accurately detected, and it is possible to provide a security service having high availability and reliability.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: November 14, 2017
    Assignee: PENTA SECURITY SYSTEMS INC.
    Inventors: Seok Woo Lee, Sang Gyoo Sim, Duk Soo Kim
  • Patent number: 9621546
    Abstract: Disclosed is a technology related to a method of generating an OTP and an apparatus for performing the same. The method includes receiving user secret information that is input according to execution of a process of providing an OTP; authenticating the user secret information by generating a response value based on the received user secret information and a challenge value received from a user verification apparatus, and transmitting the response value to the user verification apparatus; and generating an OTP using at least one of the user secret information, the challenge value and the response value as the user secret information is authenticated, thereby effectively dealing with loss or appropriation of a user terminal and also improving the security of an OTP.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 11, 2017
    Assignee: PENTA SECURITY SYSTEMS INC.
    Inventors: Seok Woo Lee, You Sik Lee, Sang Gyoo Sim, Duk Soo Kim, Gi Young Joo
  • Patent number: 9525556
    Abstract: A method for issuing a certificate signing request (CSR) certificate in a vehicle-to-anything (V2X) communication environment includes: receiving, at a first server, a certificate issuance request message including vehicle identification information transmitted from a communication module of the vehicle; determining, by a second server, whether a CSR certificate corresponding to the vehicle identification information has already been issued with reference to a database; and determining, by the second server, whether to issue the corresponding CSR certificate or whether to generate an error message, based on the determination of whether the corresponding CSR certificate has already been issued.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: December 20, 2016
    Assignees: Hyundai Motor Company, Penta Security System Inc.
    Inventors: Jong Rok Park, Cho Rong Ryu, Dae Sung Hwang, Su Lyun Sung, Dong Gyu Noh, Hahk Rel Noh, Duk Soo Kim, Sang Gyoo Sim, Eun Ho Shin, Jung Bai Kim, Byung Gwan Kim, Seok Woo Lee, You Sik Lee
  • Publication number: 20160197891
    Abstract: A method of transferring a rights object (RO) and an electronic device are provided. The method includes generating a secure RO by encrypting an RO including usage rights information regarding digital content and transferring the secure RO from a first device to a second device.
    Type: Application
    Filed: March 11, 2016
    Publication date: July 7, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yeo-Jin KIM, Yun-Sang OH, Sang-Gyoo SIM, Kyung-im JUNG, Ji-Soo KIM
  • Publication number: 20160119151
    Abstract: A method for issuing a reliable certificate to a vehicle for a vehicle-to-anything (V2X) communication in a server on a network comprises receiving a certificate issue request including vehicle identification information and road-side unit (RSU) identification information from an RSU. Log information for the certificate issue request is extracted from a database. Normality or abnormality is determined according to whether a predetermined certificate issue criteria is satisfied by analyzing the certificate issue request and the log information. The certificate is issued and the certificate is transmitted to a vehicle communication module according to determination of normality, or certificate revocation information is registered according to determination of abnormality.
    Type: Application
    Filed: March 12, 2015
    Publication date: April 28, 2016
    Inventors: Jong Rok PARK, Cho Rong RYU, Dae Sung HWANG, Su Lyun SUNG, Dong Gyu NOH, Hahk Rel NOH, Duk Soo KIM, Sang Gyoo SIM, Eun Ho SHIN, Jung Bai KIM, Byung Gwan KIM, Seok Woo LEE, You Sik LEE
  • Publication number: 20160087804
    Abstract: A method for issuing a certificate signing request (CSR) certificate in a vehicle-to-anything (V2X) communication environment includes: receiving, at a first server, a certificate issuance request message including vehicle identification information transmitted from a communication module of the vehicle; determining, by a second server, whether a CSR certificate corresponding to the vehicle identification information has already been issued with reference to a database; and determining, by the second server, whether to issue the corresponding CSR certificate or whether to generate an error message, based on the determination of whether the corresponding CSR certificate has already been issued.
    Type: Application
    Filed: December 15, 2014
    Publication date: March 24, 2016
    Inventors: Jong Rok Park, Cho Rong Ryu, Dae Sung Hwang, Su Lyun Sung, Dong Gyu Noh, Hahk Rel Noh, Duk Soo Kim, Sang Gyoo Sim, Eun Ho Shin, Jung Bai Kim, Byung Gwan Kim, Seok Woo Lee, You Sik Lee
  • Patent number: 9152772
    Abstract: A device and a portable storage device which are capable of transferring a rights object (RO) and a method of transferring an RO are provided. The method includes enabling a device to transmit an installation request message to a portable storage device for installing a copy of an original RO present in the device in the portable storage device, enabling the device to install the copy of the original RO in the portable storage device, and enabling the device to receive an installation response message indicating that the copy of the original RO has been successfully installed in the portable storage device from the portable storage device.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-Sang Oh, Sang-Gyoo Sim, Yeo-Jin Kim