Samsung Electronics Co., Ltd.

Seoul National University

Dong-hoon Yoo

Soojung Ryu

Hee Seok Kim

Jeongwook Kim

Soo Jung Ryu

Jieun Eom

Jeong Wook Kim

Dong Kwan Suh

Bernhard Egger

Jeong-joon Yoo

Rakyong Choi

Andrey Kim

Jong Myon Kim

Su-Rim Oh

Younghyun Cho

Il Han Park

Youngsam Shin

Young-sam Shin

Yongwoo Lee

Kyoung June Min

Sunmin Kwon

Maksim Deriabin

Whan Ghang

Jun Jin Kong

YongWoo Lee

Jung Park

Jae Don Lee

Hong-Seok Kim

Chae Seok Im

Jeong Joon Yoo

Suk Jin Kim

Keun Soo Yim

Jun-whan Ahn

Taek-hyun Kim

Yeon Gon Cho

Ki-Young Choi

Nam-Hyung Kim

Deriabin Maksim

Young-Hwan Heo

A homomorphic encryption apparatus and method are disclosed. The homomorphic encryption apparatus includes one or more processors, and memory storing instructions configured to, when executed by the one or more processors, cause the one or more processors to receive a blind rotation key for performing a blind rotation operation and receive an operand ciphertext of the blind rotation operation, generate a first ciphertext by performing addition of a polynomial representation based on the blind rotation key and the operand ciphertext, and generate a target ciphertext by performing key switching and accumulative multiplication based on the first ciphertext.

Homomorphic encryption apparatus and method

An encryption key generating method and apparatus based on homomorphic encryption, and a ciphertext operation method and apparatus using the generated encrypt key are disclosed. The method of generating an encryption key for performing encryption based on homomorphic encryption includes receiving data, generating a first encryption key and a second encryption key used for encrypting the data based on a secret key, and transmitting the first and second encryption keys.

Encryption key generating method, apparatus, ciphertext operation method and apparatus using the generated encryption key

A crypto processor, a method of operating a crypto processor, and an electronic device including a crypto processor. A method of operating a crypto processor for performing a polynomial multiplication of lattice-based texts includes transferring coefficients of polynomials for the polynomial multiplication to multipliers, performing multiplications for a portion of the coefficients in parallel using the multipliers, performing an addition for a portion of results of the multiplications using an adder, and determining a result of the polynomial multiplication based on another portion of the results of the multiplications and a result of the addition.

Crypto processor, method of operating crypto processor, and electronic device including crypto processor

A method and device for comparing movement paths based on homomorphic encrypted is disclosed, where a server includes a processor configured to collect first encrypted movement path information of a comparison target encrypted by a common key, receive, from a user device, second encrypted movement path information of a user of the user device encrypted by a private key, compare the first encrypted movement path information and the second encrypted movement path information, decrypt a portion of a result of the comparison by the common key to generate a partially decrypted comparison result, and provide the partially decrypted result of the comparison to the user.

Method and device for comparing movement paths based on homomorphic encryption

Disclosed is a method and apparatus for modulus refresh, where the method for modulus refresh of a ciphertext in homomorphic encryption includes receiving a first ciphertext corresponding to a first modulus, generating a second ciphertext by performing a blind rotation on the first ciphertext, and generating a target ciphertext corresponding to a second modulus greater than the first modulus based on the first ciphertext and the second ciphertext.

Method and apparatus for modulus refresh in homomorphic encryption

Provided are computing devices, each including a plurality of cores, and methods of allocating power to the plurality of cores. The computing device includes: a control core group including a plurality of control cores, the control core group configured to allocate a power budget to processing cores according to an energy management policy and state information of the processing cores, and transmit the allocated power budget to at least one of a lower control core and the processing cores; and a processing core group including at least one or more of the processing cores, the processing core group configured to perform computations based on the power budget allocated by the control core group, and transmit state information of the processing cores to the control core group, the state information of the processing cores having been modified based on the computations performed.

Computing devices and methods of allocating power to plurality of cores in each computing device

A computing system is provided. The computing system includes: a memory configured to store a shader program; and a graphics processing unit (GPU) configured to obtain the shader program stored in the memory in a profile mode, the GPU being configured to perform: inserting, into the shader program, one or more monitor associative codes; compiling the shader program, into which the one or more monitor associative codes are inserted, into a language that is capable of being processed by a plurality of cores; and obtaining a runtime performance characteristic of the shader program by executing the compiled shader program and the one or more monitor associative codes.

Graphics processing unit for deriving runtime performance characteristics, computer system, and operation method thereof

An apparatus configured to render an object including a path includes a storage circuit, an arithmetic circuit configured to determine a direction of a plurality of primitives included in the path based on path data, generate primitive direction information, store the primitive direction information in the storage circuit, and generate a winding number of each of a plurality of pixels using the stored primitive direction information, and a determination circuit configured to determine whether a shading operation is to be performed based on the generated winding number.

Apparatus configured to render object including path, computing device including the apparatus, and rendering method of the apparatus

A processor device includes a scheduler and a performance counter. The scheduler schedules commands of a first command set and commands of a second command set for a functional unit. A performance counter counts numbers of times where events of interest respectively occur while the functional unit processes first operations directed by the first command set and second operations directed by the second command set. The commands of the first command set are repeatedly scheduled such that the numbers of times for all the events of interest are counted with regard to the first operations. The commands of the second command set are scheduled after the numbers of times for all the events of interest are counted with regard to the first operations.

Processor device collecting performance information through command-set-based replay

Provided are a graphics processing unit and a graphics processing method for performing path rendering. The graphics processing method may include receiving object information including primitive information regarding the object; generating a primitive mask with respect to respective pixels, the primitive mask corresponding to the primitive information and including a plurality of bits; generating, based on the primitive mask, winding numbers with respect to the respective pixels; and rendering the pixels, based on the winding numbers.

Graphics processing unit that performs path rendering, and a method of operating the same

A multi-core computing device includes a control core group having first low-level control cores and a processing core group. The control core group allocates work groups for executing an Open Computing Language (OpenCL) kernel to the first low-level control cores and first processing cores among the processing core group. The processing core group performs processing of the work groups allocated by the control core group outputs results of the processing. The control cores are hierarchically grouped.

Method of processing OpenCL kernel and computing device therefor

A method of processing data including receiving data to be stored in a first group of cache banks from among a plurality of cache banks corresponding to a plurality of cores. The method further includes partitioning the received data and transmitting the partitioned data to the first group of cache banks according to a write intensity of the received data, and storing a portion of the transmitted data in a first cache bank from among the first group of cache banks.

Method and device for processing data

A processor including a coarse grained array including a plurality of processing elements, a central register file including a first plurality of register files, a shadow central register file including a second plurality of register files, each of the second plurality of register files corresponding to each of the first plurality of register files included in the central register file, and a plurality of shadow register files, each of the plurality of shadow register files corresponding to each of a third plurality of register files included in predetermined processing elements selected from the plurality of processing elements.

Apparatus and method of exception handling for reconfigurable architecture

A cache memory system using temporal locality information and a data storage method are provided. The cache memory system including: a main cache which stores data accessed by a central processing unit; an extended cache which stores the data if the data is evicted from the main cache; and a separation cache which stores the data of the extended cache when the data of the extended cache is evicted from the extended cache and temporal locality information corresponding to the data of the extended cache satisfies a predetermined condition.

Growing community of inventors

Suwon-si, South Korea

Dong-hoon Yoo