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Patent Agency Ranking
1.发明授权公开(公告)号：US11329835B2
公开(公告)日：2022-05-10
申请号：US16855754
申请日：2020-04-22
Inventor： Byoung-Koo Kim , Seung-Yong Yoon , You-Sung Kang , Doo-Ho Choi , Ik-Kyun Kim , Tae-Sung Kim , Mi-Kyung Oh , Sang-Jae Lee
Abstract: Disclosed herein are an apparatus and method for authenticating an IoT device. The method, performed by the IoT device authentication apparatus, includes transmitting, by the IoT device authentication apparatus, a random number to the IoT device and encrypting, by the IoT device authentication apparatus, the random number using a previously registered first white-box cryptography value through a white-box cryptography method; generating, by the IoT device, a first device response value from a previously registered first device challenge value using a Physical Unclonable Function (PUF) and encrypting, by the IoT device, the random number, received from the IoT device authentication apparatus, using the first device response value; and performing, by the IoT device authentication apparatus, authentication of the IoT device by checking whether the random number encrypted using the white-box cryptography method matches the random number encrypted using the PUF, which is received from the IoT device.
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2.发明授权公开(公告)号：US11726668B2
公开(公告)日：2023-08-15
申请号：US17507727
申请日：2021-10-21
Inventor： Yong-Sung Jeon , Doo-Ho Choi , Ha-Young Seong , Mi-Kyung Oh , Sang-Jae Lee , Ik-Kyun Kim
IPC: G06F3/06
CPC classification number: G06F3/0619 , G06F3/0652 , G06F3/0659 , G06F3/0673
Abstract: Disclosed herein is a device equipped with flash memory, which includes memory in which at least one program is recorded and a processor for executing the program. The memory includes flash memory including a data area and a backup area, and the program divides data into two or more segments depending on whether the data can be stored in a single page and stores the same in the data area. The first segment is stored in a page along with a segment number, indicating the sequential position of the divided data, a segment offset, indicating the number of pages between the pages in which the current segment and the next segment are stored, the size of a data file name, the size of the data, and the file name. At least one additional segment may be stored in another page along with the segment number and segment offset thereof.
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公开(公告)号：US11336444B2
公开(公告)日：2022-05-17
申请号：US16940146
申请日：2020-07-27
Inventor： Yong-Sung Jeon , You-Sung Kang , Byoung-Koo Kim , Sang-Jae Lee , Seung-Kwang Lee , Doo-Ho Choi
Abstract: Disclosed herein are a hardware security module, a device having the hardware security module, and a method for operating the device. The method for verifying integrity of executable code in a device includes dividing, by a Micro-Control Unit (MCU), executable code into multiple blocks, generating, by the MCU, hash values corresponding to the blocks resulting from the division, storing, by a Hardware Security Module (HSM), the generated hash values, calculating, by the MCU, at least one hash value, among hash values of the multiple blocks when the executable code boots, and comparing, by the HSM, the calculated hash value with a hash value corresponding to the calculated hash value, among the hash values stored in the HSM.
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公开(公告)号：US12212670B2
公开(公告)日：2025-01-28
申请号：US17214588
申请日：2021-03-26
Inventor： Do-Young Chung , Doo-Ho Choi , Sok-Joon Lee , Seung-Kwang Lee
Abstract: Disclosed herein are an apparatus and method for calculating a multiplicative inverse. The apparatus for calculating a multiplicative inverse includes a data input unit for receiving input data, a multiplicative inverse calculation unit for dividing an input degree-8 finite field corresponding to the input data into two first degree-4 finite fields so as to perform Advanced Encryption Standard (AES) encryption on the input data, and for performing a multiplicative inverse calculation on the first degree-4 finite fields in consideration of a circuit depth value (T-Depth) and qubit consumption of quantum gates in a quantum circuit, and a data output unit for outputting result data obtained by performing the multiplicative inverse calculation.
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公开(公告)号：US09286474B2
公开(公告)日：2016-03-15
申请号：US14250950
申请日：2014-04-11
Inventor： Seung-Kwang Lee , Doo-Ho Choi
CPC classification number: G06F21/602
Abstract: Provided is an encoding apparatus including a communication unit configured to receive data from an outside, a memory configured to store an instruction for encoding the data, and a processor configured to encode the data according to the instruction, in which the instruction includes an instruction for encoding the data using a first table for looking up and calculating a result value obtained by encoding according to a predetermined pattern in an a-th round, and when among first to fourth data included in data obtained by encoding through the first table, an i-th bit of exclusive OR of the second to fourth data and a j-th bit of the first data are different, an instruction for encoding the data using a second table for looking up and calculating a result value calculated by performing additional encoding on exclusive OR of the first to fourth data.
Abstract translation: 提供了一种编码装置，包括被配置为从外部接收数据的通信单元，被配置为存储用于对数据进行编码的指令的存储器，以及被配置为根据指令对数据进行编码的处理器，其中该指令包括 使用用于查找的第一表来编码数据，并且计算根据第一轮中的预定模式进行编码获得的结果值，并且当包括在通过第一表编码获得的数据中的第一至第四数据中时，i 第二到第四数据的第二比特和第一数据的第j比特是不同的，使用第二表进行查找和计算通过对排他性进行附加编码而计算出的结果值进行编码的指令 OR为第一至第四数据。
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