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公开(公告)号：US11509460B2
公开(公告)日：2022-11-22
申请号：US16664825
申请日：2019-10-26
发明人： Kyu-Young Choi , Duk-Jae Moon , Ji-Hoon Cho , Dong Guk Han , Bo Yeon Sim , Jae Geun Moon , Ae Sun Park
摘要： A method for performing a matrix multiplication operation being secure against side-channel attacks according to one embodiment, which is performed by a computing device comprising one or more processors and a memory storing one or more programs to be executed by the one or more processors, includes shuffling an order of execution of multiplication operations between elements of a first matrix and elements of a second matrix for a matrix multiplication operation between the first matrix and the second matrix; and performing the matrix multiplication operation based on the shuffled order of execution.
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公开(公告)号：US11101994B2
公开(公告)日：2021-08-24
申请号：US16118102
申请日：2018-08-30
发明人： Hyo-Jin Yoon , Kyu-Young Choi , Duk-Jae Moon , Ji-Hoon Cho
摘要： 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.
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公开(公告)号：US10341104B2
公开(公告)日：2019-07-02
申请号：US14994687
申请日：2016-01-13
发明人： Duk-Jae Moon , Ji-Hoon Cho , Kyu-Young Choi
摘要： 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.
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公开(公告)号：US10903975B2
公开(公告)日：2021-01-26
申请号：US16101711
申请日：2018-08-13
发明人： Kyu-Young Choi , Duk-Jae Moon , Hyo-Jin Yoon , Ji-Hoon Cho
摘要： 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.
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公开(公告)号：US10469258B2
公开(公告)日：2019-11-05
申请号：US15610813
申请日：2017-06-01
发明人： Duk-Jae Moon , Kyu-Young Choi , Ji-Hoon Cho
摘要： Disclosed are an encryption apparatus and method. The encryption apparatus includes a storage configured to store a static key table, and at least one processor configured to implement an authenticator configured to perform authentication with an external apparatus and acquire authentication information and a key table generator configured to generate a dynamic key table using authentication information acquired through the authentication.
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公开(公告)号：US10411880B2
公开(公告)日：2019-09-10
申请号：US15050930
申请日：2016-02-23
发明人： Duk-Jae Moon , Ji-Hoon Cho , Kyu-Young Choi , Nathan Keller , Orr Dunkelman , Itai Dinur
摘要： 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.
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公开(公告)号：US20170118021A1
公开(公告)日：2017-04-27
申请号：US14994687
申请日：2016-01-13
发明人： Duk-Jae Moon , Ji-Hoon Cho , Kyu-Young Choi
CPC分类号： H04L9/16 , H04L9/0822 , H04L63/0457 , H04L2209/16
摘要： 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.
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公开(公告)号：US09515821B2
公开(公告)日：2016-12-06
申请号：US14576727
申请日：2014-12-19
发明人： Kyu-Young Choi , Ji-Hoon Cho , Hyo-Jin Yoon
CPC分类号： H04L9/0819 , H04L9/0637 , H04L9/0822 , H04L9/0825 , H04L2209/16 , H04L2209/24
摘要： Provided is an apparatus for encrypting data including a key determiner configured to determine a cipher key for white-box cryptography (WBC)-based encryption and a symmetric key different from the cipher key and an encrypter configured to generate a ciphertext of the data using the WBC-based encryption and symmetric-key-based encryption with the symmetric key.
摘要翻译： 提供了一种用于加密数据的装置，包括密钥确定器，其被配置为确定用于基于白盒密码术（WBC）的加密的密码密钥和与密码密钥不同的对称密钥，加密器被配置为使用所述加密密钥生成密文的密文 基于WBC的加密和基于对称密钥的加密与对称密钥。
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公开(公告)号：US11042954B2
公开(公告)日：2021-06-22
申请号：US15968146
申请日：2018-05-01
发明人： Hyo-Jin Yoon , Kyu-Young Choi , Duk-Jae Moon , Ki-Young Kim , Jang-Hyuk Ahn , Ji-Hoon Cho
摘要： 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.
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公开(公告)号：US11012424B2
公开(公告)日：2021-05-18
申请号：US16171986
申请日：2018-10-26
发明人： Kyu-Young Choi , Ji-Hoon Cho , Hyo-Jin Yoon , Duk-Jae Moon
摘要： 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.
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