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公开(公告)号：US20200233980A1
公开(公告)日：2020-07-23
申请号：US16742037
申请日：2020-01-14
Inventor： Sang-Jae LEE , You-Sung KANG , Keon-Woo KIM , Byoung-Koo KIM , Ik-Kyun KIM , Ju-Han KIM , Tae-Sung KIM , Mi-Kyung OH , Seung-Yong YOON , Seung-Kwang LEE , Yong-Sung JEON , Doo-Ho CHOI
Abstract: A secret information generation apparatus and a method for operating the secret information generation apparatus. The secret information generation apparatus includes a resistor-capacitor circuit, and a microcontroller unit including a first pin connected to an input terminal of the resistor-capacitor circuit and a second pin connected to an output terminal of the resistor-capacitor circuit, wherein the microcontroller unit is configured to transmit a digital value corresponding to a challenge to the resistor-capacitor circuit through the first pin, receive an output value of the resistor-capacitor circuit corresponding to the digital value through the second pin, convert the received value into a digital value using an analog-to-digital converter, extract one or more valid bits from the converted digital value, and then generate a response.
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2.发明申请公开(公告)号：US20210036873A1
公开(公告)日：2021-02-04
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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公开(公告)号：US20150127953A1
公开(公告)日：2015-05-07
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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4.发明申请公开(公告)号：US20220155974A1
公开(公告)日：2022-05-19
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
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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Patent Agency Ranking
公开(公告)号：US20150210175A1
公开(公告)日：2015-07-30
申请号：US14601638
申请日：2015-01-21
Inventor： You-Sung KANG , Yong-Je CHOI , Doo-Ho CHOI , Hyun-Sook CHO , Eun-Kyung JUN , Doo-Il PARK , Byeong-Gyu HYEON , Joon-Ho SHIN , Dong-Young SHIN
IPC: B60L11/18
CPC classification number: B60L11/1816 , B60L53/14 , B60L53/30 , B60L53/31 , B60L53/65 , H02J2007/0098 , Y02T10/7005 , Y02T10/7072 , Y02T90/121 , Y02T90/128 , Y02T90/14 , Y02T90/16 , Y02T90/163 , Y02T90/169 , Y04S30/14
Abstract: An electric vehicle and a device and method for charging the electric vehicle are disclosed. The device for charging an electric vehicle includes a charger cable communication unit, a charger security unit, and a control unit. The charger cable communication unit receives encrypted electric vehicle charging information from an electric vehicle. The charger security unit decrypts the encrypted electric vehicle charging information. The control unit determines whether the decrypted electric vehicle charging information is identical with charger charging information. The charger security unit encrypts the charger charging information if the control unit of the device for charging an electric vehicle determines that the decrypted electric vehicle charging information is not identical with the charger charging information. The charger cable communication unit sends the encrypted charger charging information to the electric vehicle. The control unit charges the electric vehicle when an acknowledgement message is received from the electric vehicle.
Abstract translation: 公开了一种用于对电动车辆充电的电动车辆和装置和方法。 用于对电动车辆充电的装置包括充电器电缆通信单元，充电器安全单元和控制单元。 充电器电缆通信单元从电动车辆接收加密的电动车辆充电信息。 充电器安全单元解密加密的电动车辆充电信息。 控制单元确定解密的电动车辆充电信息是否与充电器充电信息相同。 如果用于对电动车辆充电的装置的控制单元确定解密的电动车辆充电信息与充电器充电信息不相同，则充电器安全单元加密充电器充电信息。 充电器电缆通信单元将加密的充电器充电信息发送到电动车辆。 当从电动车接收到确认消息时，控制单元对电动车充电。
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公开(公告)号：US20210392004A1
公开(公告)日：2021-12-16
申请号：US17208212
申请日：2021-03-22
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 device authentication. The method for device authentication based on a certificate using a PUF, performed by an apparatus for device authentication based on a certificate using a PUF, includes acquiring previously stored first Challenge-Response-Pair (CRP) information corresponding to identification information received from a device that requests authentication and generating a certificate including a public key generated using the first CRP information; transmitting a message in which the certificate encrypted using the first response value of the first CRP information as a server secret key and the first challenge value of the first CRP information are included to the device; and authenticating the device by verifying an encrypted signature message received from the device through a secure channel.
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公开(公告)号：US20210390443A1
公开(公告)日：2021-12-16
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：US20210058249A1
公开(公告)日：2021-02-25
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：US20200167504A1
公开(公告)日：2020-05-28
申请号：US16552553
申请日：2019-08-27
Inventor： Mi-Kyung OH , Sang-Jae LEE , You-Sung KANG , Ik-Kyun KIM , Ju-Han KIM , Doo-Ho CHOI
Abstract: Disclosed herein are an apparatus and method for generating secret information. The apparatus includes a data communication unit for receiving a request to output a content value and outputting the content value; and a microcontroller unit for generating a Physically Unclonable Function (PUF) response based on the content value, calculating the characteristic value of the PUF response, and generating secret information using the PUF response, the error of which is corrected using the characteristic value.
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