Patents by Inventor Hyo Jin Yoon

Hyo Jin Yoon 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: 20220198551
    Abstract: A method for controlling a live content broadcast includes receiving, on a first online platform, information on a first set of products registered as products for sale of a user account associated with the user terminal, and receiving from a user, as a first user input, a selection of a second set of products to sell in the live content broadcast on a second online platform among the first set of products.
    Type: Application
    Filed: July 12, 2021
    Publication date: June 23, 2022
    Inventors: Jaehoon SONG, Soo Ha PARK, Mulgyeol KANG, Seung Hye LEE, Yi Seul GA, Soo Ryun SHIN, Kyung Hee YOON, Eunyoung SEO, Jee Won NAM, Hyo Jin KIM, Jun Young JANG, Nakyung LIM
  • Patent number: 11352260
    Abstract: The present invention relates to a bundle-type carbon nanotube which has a bulk density of 25 to 45 kg/m3, a ratio of the bulk density to a production yield of 1 to 3, and a ratio of a tap density to the bulk density of 1.3 to 2.0, and a method for preparing the same.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: June 7, 2022
    Assignee: LG CHEM, LTD
    Inventors: Sung Jin Kim, Jae Keun Yoon, Dong Hyun Cho, Hyun Joon Kang, Byung Yul Choi, Duk Ki Kim, Hyun Woo Park, Hyo Sang You
  • Publication number: 20220164791
    Abstract: A method for distributing collectable ownership based on blockchain networks, including steps of: (a) an online transaction server, in response to acquiring a distribution request for a collectable from an owner, (i) generating an ownership token contract, (ii) generating a contract registering transaction, and (iii) broadcasting the contract registering transaction to a blockchain network, to thereby instruct the blockchain nodes to (iii-1) verify the contract registering transaction, (iii-2) register the ownership token contract, included in the contract registering transaction in the blockchain network, and (iii-3) transfer an ownership token contract ID corresponding to the ownership token contract registered in the blockchain network to the online transaction server.
    Type: Application
    Filed: October 26, 2021
    Publication date: May 26, 2022
    Inventors: Yeo Jin Yoon, Jung Bong Lee, Sang Hoon Hyun, Jae Do Kim, Hyo Won Cho
  • Publication number: 20220147961
    Abstract: A method for distributing collectable ownership by using multi-signatures based on blockchain networks, including steps of: (a) an online transaction server, in response to acquiring a distribution request for a collectable from an owner, (i) generating an ownership token contract, (ii) generating a contract registering transaction, and (iii) broadcasting the contract registering transaction to a blockchain network, to thereby instruct the blockchain nodes to (iii-1) verify the contract registering transaction, (iii-2) register the ownership token contract, included in the contract registering transaction in the blockchain network, and (iii-3) transfer an ownership token contract ID corresponding to the ownership token contract registered in the blockchain network to the online transaction server.
    Type: Application
    Filed: November 1, 2021
    Publication date: May 12, 2022
    Inventors: Yeo Jin Yoon, Jung Bong Lee, Sang Hoon Hyun, Jae Do Kim, Hyo Won Cho
  • Patent number: 11329798
    Abstract: An apparatus for set intersection operation according to an embodiment includes a ciphertext acquisition unit configured to acquire a ciphertext for a first vector corresponding to a first subset of a universal set including a plurality of elements from an encryption apparatus, a transform unit configured to generate a second vector corresponding to a second subset of the universal set, a computation unit configured to generate a ciphertext for a third vector corresponding to an intersection of the first subset and the second subset, based on the ciphertext for the first vector and the second vector, and a ciphertext providing unit configured to provides the ciphertext for the third vector to the encryption apparatus.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: May 10, 2022
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Jin Hyuck Jeong, Joo Hee Lee, Eun Kyung Kim, Kyu Young Choi, Duk Jae Moon, Hyo Jin Yoon
  • Publication number: 20220129547
    Abstract: A method for preventing side-channel attack according to an embodiment includes generating an order table which includes a position index value for each bit value of a bit string that is secret information to be generated through a decryption algorithm of an Nth Degree Truncated Polynomial Ring Units (NTRU) LPRime algorithm, shuffling a sort order of the position index value for the each bit value in the order table based on a random number, determining a generation order for the each bit value according to the sort order of the position index value for the each bit value in the order table, and generating the secret information through the decryption algorithm. The secret information is generated by generating the each bit value according to the determined generation order.
    Type: Application
    Filed: February 1, 2021
    Publication date: April 28, 2022
    Inventors: Ji Hoon KWON, Joo Hee LEE, Hyo Jin YOON, Ji Hoon CHO, Dong Guk HAN, Bo Yeon SIM, Il Ju KIM, Tae Ho LEE, Jae Seung HAN
  • Publication number: 20220116199
    Abstract: An apparatus for generating synthetic data according to an embodiment includes a synthetic data generator configured to generate synthetic data corresponding to combined data obtained by combining original data held by each of a plurality of data providing apparatuses, and a synthetic data provider configured to provide the synthetic data to a data using apparatus.
    Type: Application
    Filed: October 13, 2021
    Publication date: April 14, 2022
    Inventors: Min Jung KIM, Ji Hoon CHO, Hyo Jin YOON, Young Hyun KIM, Kyoo Hyung HAN
  • Patent number: 11277257
    Abstract: A method for performing an operation according to one embodiment includes performing a homomorphic operation using one or more ciphertexts that are homomorphically encrypted based on an encryption key, determining a count value for a ciphertext generated through the homomorphic operation based on count values for each of the one or more ciphertexts, requesting a key management apparatus, which holds the encryption key and a decryption key corresponding to the encryption key, to re-encrypt the generated ciphertext based on the determined count value, acquiring, from the key management apparatus, a ciphertext generated by re-encrypting the generated ciphertext through decryption based on the decryption key and encryption based on the encryption key; and determining a count value for the acquired ciphertext to be a preset initial value.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: March 15, 2022
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Eun Kyung Kim, Duk Jae Moon, Hyo Jin Yoon, Jung Hoon Sohn, Jang Hyuk Ahn, Jin Hyuck Jeong, Ji Hoon Kwon, Young Hyun Kim
  • Patent number: 11277256
    Abstract: A ciphertext comparison method uses homomorphic encryption. An apparatus performs the ciphertext comparison method using the homomorphic encryption. The ciphertext comparison method using homomorphic encryption includes acquiring a first ciphertext obtained by encrypting first real-number data using a homomorphic evaluation algorithm and a second ciphertext obtained by encrypting second real-number data using the homomorphic evaluation algorithm, and generating a ciphertext for a result for comparison in size between the first real-number data and the second real-number data using homomorphic evaluation for the first ciphertext, the second ciphertext, and an approximation function for approximating a signum function.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: March 15, 2022
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Eun-Kyung Kim, Hyo-Jin Yoon, Young-Hyun Kim, Hee-Hyeon Park
  • Publication number: 20210326752
    Abstract: A method for training an analysis model according to an embodiment includes receiving synthetic data for original data from a client apparatus, determining a hyperparameter value for analysis model training using the synthetic data, receiving a ciphertext for the original data from the client apparatus, and training the analysis model using the determined hyperparameter value and the received cipher text.
    Type: Application
    Filed: October 27, 2020
    Publication date: October 21, 2021
    Inventors: Eun Kyung KIM, Hyo Jin YOON, Ji Hoon CHO, Min Jung KIM, Young Seon LEE
  • Publication number: 20210328764
    Abstract: A method for data analysis according to an embodiment includes acquiring, from a client device, a ciphertext for a precomputation result generated by applying some of a plurality of operations for performing an analysis algorithm based on target data to the target data, and generating an encrypted computation result for remaining operations of the plurality of operations by using the ciphertext.
    Type: Application
    Filed: May 27, 2020
    Publication date: October 21, 2021
    Inventors: Eun Kyung KIM, Young Hyun KIM, Jin Hyuck JEONG, Duk Jae MOON, Hyo Jin YOON, Jung Hoon SOHN, Ki Hyo MOON, Seung Hyun KANG, Seung Ro JOO
  • Publication number: 20210328765
    Abstract: A method for encryption according to an embodiment includes generating a ciphertext for a secret key that is an integer vector by using an integer-based first homomorphic encryption algorithm, generating a key stream that is the integer vector from a nonce and the secret key by using a key stream generator, encoding the key stream by using a message encoding function of the first homomorphic encryption algorithm, encoding a message that is a real vector by using a message encoding function of a real number-based second homomorphic encryption algorithm, generating a ciphertext for the message by using a result of the encoding of the key stream and a result of the encoding of the message, and transmitting the nonce, the ciphertext for the secret key, and the ciphertext for the message to an apparatus for converting a ciphertext.
    Type: Application
    Filed: October 27, 2020
    Publication date: October 21, 2021
    Inventors: Joo Hee LEE, Duk Jae MOON, Hyo Jin YOON, Ji Hoon CHO, Eun Kyung KIM, Seong Kwang KIM, Joo Young LEE, Jin Cheol HA, Won Seok CHOI
  • Publication number: 20210297232
    Abstract: A method for performing an operation according to one embodiment includes performing a homomorphic operation using one or more ciphertexts that are homomorphically encrypted based on an encryption key, determining a count value for a ciphertext generated through the homomorphic operation based on count values for each of the one or more ciphertexts, requesting a key management apparatus, which holds the encryption key and a decryption key corresponding to the encryption key, to re-encrypt the generated ciphertext based on the determined count value, acquiring, from the key management apparatus, a ciphertext generated by re-encrypting the generated ciphertext through decryption based on the decryption key and encryption based on the encryption key; and determining a count value for the acquired ciphertext to be a preset initial value.
    Type: Application
    Filed: May 27, 2020
    Publication date: September 23, 2021
    Inventors: Eun Kyung KIM, Duk Jae MOON, Hyo Jin YOON, Jung Hoon SOHN, Jang Hyuk AHN, Jin Hyuck JEONG, Ji Hoon KWON, Young Hyun KIM
  • Patent number: 11102241
    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.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Kyu-Young Choi, Duk-Jae Moon, Hyo-Jin Yoon, Ji-Hoon Cho
  • Patent number: 11101994
    Abstract: A method of provisioning key information and a device using the method are provided. The method of provisioning key information according to one embodiment of the present disclosure includes generating key information for encryption and decryption from seed information using a key information generation algorithm and deleting code that corresponds to the key information generation algorithm from the device based on the generation of the key information.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Hyo-Jin Yoon, Kyu-Young Choi, Duk-Jae Moon, Ji-Hoon Cho
  • Publication number: 20210203474
    Abstract: A method for performing an operation according to an embodiment includes assigning an error value to encrypted data; and performing a homomorphic operation for an approximation function, which is obtained by approximating a target function, by using, as an input value, the encrypted data to which the error value is assigned.
    Type: Application
    Filed: May 27, 2020
    Publication date: July 1, 2021
    Inventors: Eun Kyung KIM, Young Hyun KIM, Hyo Jin YOON, Duk Jae MOON, Jung Hoon SOHN, Jin Hyuck JEONG, Seung Ro JOO, Seung Hyun KANG, Ki Hyo MOON
  • Publication number: 20210194671
    Abstract: An apparatus for set intersection operation according to an embodiment includes a ciphertext acquisition unit configured to acquire a ciphertext for a first vector corresponding to a first subset of a universal set including a plurality of elements from an encryption apparatus, a transform unit configured to generate a second vector corresponding to a second subset of the universal set, a computation unit configured to generate a ciphertext for a third vector corresponding to an intersection of the first subset and the second subset, based on the ciphertext for the first vector and the second vector, and a ciphertext providing unit configured to provides the ciphertext for the third vector to the encryption apparatus.
    Type: Application
    Filed: October 26, 2020
    Publication date: June 24, 2021
    Inventors: Jin Hyuck JEONG, Joo Hee LEE, Eun Kyung KIM, Kyu Young CHOI, Duk Jae MOON, Hyo Jin YOON
  • Patent number: 11042954
    Abstract: A system and method for communication between devices are provided. According to the embodiments of the present disclosure, it is possible to easily authenticate a counterpart device using a one-time key HN(T) for a D2D communication between a first device and a second device, without using a separate secure channel (e.g., secure sockets layer (SSL), transport layer security (TLS), or the like) in an environment where it is difficult to synchronize the first device with the second device without intervention of a server.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: June 22, 2021
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Hyo-Jin Yoon, Kyu-Young Choi, Duk-Jae Moon, Ki-Young Kim, Jang-Hyuk Ahn, Ji-Hoon Cho
  • Patent number: 11012424
    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.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: May 18, 2021
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Kyu-Young Choi, Ji-Hoon Cho, Hyo-Jin Yoon, Duk-Jae Moon
  • Patent number: 10999056
    Abstract: An apparatus and method for performing operation being secure against side channel attack are provided. The apparatus and method generate values equal to values obtained through an exponentiation operation or a scalar multiplication operation of a point using values extracted from previously generated parameter candidate value sets and an operation secure against side-channel attack, thereby improving security against side-channel attack without degrading performance.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: May 4, 2021
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Kyu-Young Choi, Duk-Jae Moon, Hyo-Jin Yoon, Ji-Hoon Cho