Abstract: Provided is a radiation therapy apparatus on which quality management is performed. The radiation therapy apparatus includes: a body unit; a gantry coupled to one side of the body unit and formed to be rotatable in at least one direction with regard to the body unit; a radiation irradiating head formed at one side of the gantry to irradiate a radiation; and a level control module formed at one side of the radiation irradiating head to measure a rotation angle of the gantry or the radiation irradiating head, compare the measured rotation angle with a rotation angle indicated by an angle indicator of the radiation therapy apparatus, and correct an error of the angle indicator.

Abstract: An encrypting apparatus includes a storage unit and a controller. The storage unit stores an encryption algorithm including an internal function outputting a second value from a first value and an inversion mode encryption algorithm including an inversion mode internal function outputting a complement of the second value from a complement of the first value. The controller selects one of an inversion mode and a non-inversion mode. The controller outputs a cipher text from a plain text using the encryption algorithm when the non-inversion mode is selected.

Abstract: Provided are an operation method and a secure terminal for performing the method. The operation method may include receiving, from a user terminal, a plain text on which an external encoding operation is to be performed, performing the external encoding operation on the plain text, and transmitting the external encoding operated plain text to the user terminal, and the operation method may include receiving, from a user terminal, a cryptogram in which a white-box cryptography operation is performed on an external encoding operated plain text; performing an external decoding operation on the cryptogram; and transmitting the external decoding operated cryptogram to the user terminal.

Abstract: Disclosed is a function masking apparatus in a symmetric cryptographic algorithm for preventing side channel attacks, including: a controller creating lookup tables for one or more internal functions included in a high security and light weight (HIGHT) algorithm, respectively based on a plurality of non-linear functions, a plurality of linear functions, and a plurality of constants which are randomly generated; and a storage unit storing the lookup tables for one or more internal functions included in the generated HIGHT algorithm.

Abstract: A side channel analysis apparatus based on a profile includes a waveform collection unit configured to collect leaked information from a target device of a side channel analysis; and a preprocessing unit configured to preprocess a waveform data correspond to the leaked information collected from the waveform collection unit before analyzing same. Further, the side channel analysis apparatus includes an analysis unit configured to analyze the waveform data preprocessed in the preprocessing unit; and a profile configuration unit configured to make each process of the waveform collection unit, the preprocessing unit, and the analysis unit into a process and configure a profile for managing each process by connection of each process.

Abstract: A system for manufacturing a patient-specific applicator reconstructs a three-dimensional (3D) image by using a medical image of a patient, models an applicator structure for irradiating radiation onto a tumor tissue, based on a 3D image, generates printing data for 3D printing for manufacturing the patient-specific applicator based on the modeled applicator structure, and manufactures the patient-specific applicator based on the generated printing data.

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: Disclosed are a side channel analysis system that may facilitate to perform side channel analysis on a device whose dedicated side channel analysis board does not exist such as a smartphone, and a side channel analysis method using the same.

Abstract: A white box encryption device is provided. The device included in a second device among a first device and the second device performing wired or wireless communication, and performing an encryption/decryption operation using a white box encryption table consisting of a look-up table set, includes, a non-volatile memory configured to store an incomplete look-up table set in which at least one look-up table or a portion of entire look-up table is removed, a volatile memory configured to store the incomplete look-up table set received from the non-volatile memory and the at least one look-up table received from the first device at a time of the encryption/decryption operation, and construct a complete look-up table set, and an encryption/decryption operation unit configured to perform the encryption/decryption operation using the complete look-up table set.

Abstract: Disclosed is a function masking apparatus in a symmetric cryptographic algorithm for preventing side channel attacks, including: a controller creating lookup tables for one or more internal functions included in a high security and light weight (HIGHT) algorithm, respectively based on a plurality of non-linear functions, a plurality of linear functions, and a plurality of constants which are randomly generated; and a storage unit storing the lookup tables for one or more internal functions included in the generated HIGHT algorithm.

Abstract: Disclosed are a white box encryption apparatus and method. The white box encryption method includes performing an encryption operation using a plurality of white box encryption tables for each of a plurality of rounds, and mixing arrangement of result tables output for each round.

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.

Abstract: In accordance with an embodiment, the logical exclusive operation on the random number RAND and the OPc value are performed several times, the logical operation and encryption processing using a random number RAND and logical operation and encryption processing using a random number S are done in any order, which brings an increase of an attack complexity as to whether to calculate the correlation coefficient from the power consumption waveform at any point when analyzing the correlation power, whereby it is possible to defend the CPA attack effectively.

Abstract: Disclosed is a dual conversion apparatus for preventing a side channel analysis, including: a microcontroller which converts one-bit expression, which is expressed by zero and one, into one of two four-bit transitions, reconstructs a cryptographic algorithm, and applies the four-bit converted dual conversion to the reconstructed cryptographic algorithm; and a storing unit which stores the four-bit converted dual conversion which is converted by the microcontroller.

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: A communication data protection method based on symmetric key encryption, and an apparatus for enabling the method are provided. A communication data protection method using a Radio Frequency Identification (RFID) reader, the method including: receiving, from a tag, tag information including security parameter information and an encrypted Unique Item Identifier (UII); extracting the UII based on the security parameter information; transmitting, to the tag, a request message including a challenge value for replay prevention; and performing a tag authentication by receiving, from the tag, a response message including a handle and the challenge value.

Abstract: A method for a key establishment in RFID system using an adaptive Q anti-collision algorithm, the method comprising:generating group key between a reader and a number of tags using values of Q that are changed under the adaptive Q anti-collision algorithm; and creating session keys between the reader and the tags using unique IDs of the respective tags.

Abstract: Disclosed herein are a method of preventing fault-injection attacks on Chinese Remainder Theorem (CRT)-Rivest Shamir Adleman (RSA) cryptographic operations, and a recording medium for storing a program implementing the same. First, the method receives first and second primes, that is, different primes, and a randomly selected prime, that is, a random prime, which are used for CRT-RSA cryptographic operations. Thereafter, a cumulative value is calculated by performing an XOR (Exclusive OR) operation on the first prime, the second prime, and the random prime using a push function. Thereafter, the first prime, the second prime, and the random prime are loaded by performing an XOR operation on the cumulative value using a pop function corresponding to the push function. Finally, CRT-RSA operations are executed by computing modulo operations based on the first prime and the second prime.

Abstract: In accordance with an embodiment, the logical exclusive operation on the random number RAND and the OPc value are performed several times, the logical operation and encryption processing using a random number RAND and logical operation and encryption processing using a random number S are done in any order, which brings an increase of an attack complexity as to whether to calculate the correlation coefficient from the power consumption waveform at any point when analyzing the correlation power, whereby it is possible to defend the CPA attack effectively.

Abstract: A masking addition operation apparatus for prevention of a side channel attack, includes a random value generation unit generating a first random value for a first input, second random value for a second input, and a summation random value. The masking addition operation apparatus includes an operation part performing an operation on the first and second random values, a previous carry input, and first and second masked random values generated based on the first and second random values. The masking addition operation apparatus includes a carry generator generating a carry input using a result of the operation part; and a summation bit generator generating a summation bit using the summation random value, the first and second random values, the previous carry input and the first and second masked random values.