Sung-Kyoung
Sung-Kyoung Kim, Seoul KR
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20100067690 | SPA-RESISTANT LEFT-TO-RIGHT RECODING AND UNIFIED SCALAR MULTIPLICATION METHODS - Provided is a scalar multiplication method unified with a simple power analysis (SPA) resistant left-to-right recording in a crypto system based on an elliptic curve and a pairing. The scalar multiplication method includes: recording an L-digit secret key k′ from a radix-r n-digit secret key k by comparing two successive elements with each other from the most significant digit with duplication allowed in order to generate the L-digit secret key k′; and performing scalar multiplication between the secret key k and a point P on an elliptic curve to output a scalar multiplication value Q=kP using the secret key k′. | 03-18-2010 |
20120111049 | REFRIGERATOR - Provided is a refrigerator. The refrigerator includes a main body having a storage space; a door that is connected to the main body to selectively shield the storage space; a water supply container disposed in the storage space in a state where the door shields the storage space; an ice-maker disposed in a predetermined position of the storage space above the water supply container in a state where the door shields the storage space; a dispenser that is provided to a predetermined position of the door above the water supply container, to receive water or ice; a water supply passage extending from the water supply container to the ice-maker and the dispenser; a pump that is provided on the water supply passage to forcedly direct the water stored in the water supplying container to the ice-maker or the dispenser; and a valve that is provided on a predetermined position of the water supply passage near an outlet side of the pump to selectively supply the water to the ice-maker or the dispenser, wherein the pump is located at a height lower than the water supply container, and the valve is located at a height identical to or higher than the pump. | 05-10-2012 |
Sung-Kyoung Kim, Hwaseong-Si KR
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20150222434 | CRT-RSA ENCRYPTION METHOD AND APPARATUS - CRT-RSA encryption methods and apparatuses are disclosed. The CRT-RSA encryption method includes: calculating first parameter information and second parameter information used in a modular exponential calculation process based on a modular calculation result of a secret key that is obtained using Euler's phi function with respect to two different prime numbers calculated from the public key; performing a modular exponential calculation with respect to a next block based on calculation information of a previous block, in a block unit divided respectively from the first parameter information and the second parameter information; and calculating an encryption process based on a CRT calculation by using the modular exponential calculation results. | 08-06-2015 |
Sung-Kyoung Lee, Seoul KR
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20120076954 | CYCLIC OLEFIN COMPOUND, PHOTOREACTIVE POLYMER, AND ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction. | 03-29-2012 |
Sung-Kyoung Lee, Daejeon KR
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20150093520 | CYCLIC OLEFIN COMPOUND, PHOTOREACTIVE POLYMER, AND ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction. | 04-02-2015 |
20150210792 | PHOTO-ALIGNMENT POLYMER, ALIGNMENT LAYER AND LIQUID CRYSTAL RETARDATION FILM COMPRISING THE SAME - Disclosed herein is a photo-alignment polymer, which can be preferably applied to an alignment layer or the like of a three-dimensional display device because its alignment direction is easily changed depending on the polarization direction, and an alignment layer and liquid crystal retardation film including the same. The photo-alignment layer includes a cyclic olefin repeating unit substituted with one or more photoreactive groups, and has an absorbance ratio of 0.02 or more, the absorbance ratio being defined by Mathematical Formula 1 above, when the photo-alignment polymer is exposed to first polarized UV radiation having a wavelength of 280 to 315 nm and a first polarization direction at an exposure intensity of 60 mJ/cm | 07-30-2015 |