Samsung Sds Co., Ltd.

Kookmin University

Bo Yeon Sim

Dong Guk Han

Tae Ho Lee

Kyu-Young Choi

Ji-Hoon Cho

Duk-Jae Moon

Hyo Jin Yoon

Joo Hee Lee

Ji Hoon Cho

Ji Hoon Kwon

Jae Geun Moon

Jae Seung Han

Ae Sun Park

Il Ju Kim

A method for preventing side-channel attack according to an embodiment includes generating an order table which includes a position index value for each bit value of a bit string that is secret information to be generated through a decryption algorithm of an NDegree Truncated Polynomial Ring Units (NTRU) LPRime algorithm, shuffling a sort order of the position index value for the each bit value in the order table based on a random number, determining a generation order for the each bit value according to the sort order of the position index value for the each bit value in the order table, and generating the secret information through the decryption algorithm. The secret information is generated by generating the each bit value according to the determined generation order.

Apparatus and method for preventing side channel attack for NTRU LPRime algorithm

A method for performing a matrix multiplication operation being secure against side-channel attacks according to one embodiment, which is performed by a computing device comprising one or more processors and a memory storing one or more programs to be executed by the one or more processors, includes shuffling an order of execution of multiplication operations between elements of a first matrix and elements of a second matrix for a matrix multiplication operation between the first matrix and the second matrix; and performing the matrix multiplication operation based on the shuffled order of execution.

Apparatus and method for performing matrix multiplication operation being secure against side channel attack

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Seoul, South Korea

Bo Yeon Sim