Korea Advanced Institute of Science and Technology

Samsung Sds Co., Ltd.

Center for Integrated Smart Sensors Foundation

Won Seok Choi

Eun Kyung Kim

Chong Min Kyung

Hyo Jin Yoon

Joo Young Lee

Joo Hee Lee

Ji Hoon Cho

Duk Jae Moon

Seong Kwang Kim

Seung Hyuk Chang

Jin Cheol Ha

A method for encryption according to an embodiment includes generating a ciphertext for a secret key that is an integer vector by using an integer-based first homomorphic encryption algorithm, generating a key stream that is the integer vector from a nonce and the secret key by using a key stream generator, encoding the key stream by using a message encoding function of the first homomorphic encryption algorithm, encoding a message that is a real vector by using a message encoding function of a real number-based second homomorphic encryption algorithm, generating a ciphertext for the message by using a result of the encoding of the key stream and a result of the encoding of the message, and transmitting the nonce, the ciphertext for the secret key, and the ciphertext for the message to an apparatus for converting a ciphertext.

Apparatus and method for encryption, apparatus and method for converting ciphertext

A camera system includes a single lens and an image sensor including a reference pixel array including a plurality of W (white) pixels in a two-dimensional arrangement and a single microlens formed on the plurality of W pixels to be shared, and at least one color pixel array including two W pixels and two color pixels in a two-dimensional arrangement, and a single microlens disposed on the two W pixels and the two color pixels to be shared. Light shielding layers formed with Offset Pixel Apertures (OPAs) are disposed on the plurality of W pixels included in the reference pixel array and the two W pixels included in the at least one color pixel array, respectively, and the OPAs are formed on the light shielding layers in the reference pixel array and the at least one color pixel array, respectively, to maximize a spaced distance between the OPAs.

Multi pixel micro lens pixel array and camera system for solving color mix and operating method thereof

Growing community of inventors

Daejeon, South Korea

Won Seok Choi