Samsung Sds Co., Ltd.

Korea Advanced Institute of Science and Technology

Ji-Hoon Kwon

Duk-Jae Moon

Joo-Young Lee

Hyo-Jin Yoon

Young-Hyun Kim

Eun-Kyung Kim

Jung-Hoon Sohn

Hun-Hee Yu

Min-Woo Jeong

A method according to one embodiment includes generating one or more key tables based on a first seed value; generating one or more secret values from a tweak value based on the one or more key tables; and performing encryption or decryption using the one or more secret values. An apparatus according to one embodiment includes a key table generator configured to generate one or more key tables based on a first seed value, a secret value generator configured to generate one or more secret values from a tweak value based on the one or more key tables, and an encryptor/decryptor configured to perform encryption or decryption using the one or more secret values.

Apparatus and method for encryption and decryption based on tweak converter to which key table is applied

An apparatus for encryption according to an embodiment of the present disclosure comprises a classifier configured to classify each data included in an original data set into one of encryption target data and non-encryption target data on the basis of at least one of determination on whether or not an operation to be applied to each data included in the original data set for an analysis of the original data set is a preset operation and determination on whether or not each data included in the original data set is sensitive information; and an encryptor configured to encrypt the encryption target data among the data included in the original data set using a homomorphic encryption algorithm.

Encryption apparatus and method for encrypting encryption target data in data based on homomorphic encryption algorithm

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Seoul, South Korea

Ji-Hoon Kwon