Speed-up of Data Analysis with Kernel Trick in Encrypted Domain

J.S. Yoo, B.K. Song, T.M. Ahn, J.W. Heo, J.W. Yoon

Proceedings of the 40th ACM/SIGAPP Symposium on Applied Computing (ACMSAC), 2025

An efficient method leveraging kernel tricks to accelerate encrypted data analysis.

Fast Private Location-based Information Retrieval over the Torus

J.S. Yoo, M.Y. Hong, J.W. Heo, K.H. Lee, J.W. Yoon

Proceedings of the IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS), 2024

An efficient torus-FHE approach enabling privacy-preserving location-based searches.

Secure Dimensionality Reduction: Applying Linear Discriminant Analysis over the TFHE Homomorphic Encryption Scheme

G.W. Jeon, M.Y. Hong, J.S. Yoo, J.W. Yoon, B.K. Song

Proceedings of the 14th International Conference on Information and Communication Technology Convergence (ICTC), 2023

A method for performing linear discriminant analysis securely using the TFHE scheme.

Cheap and Fast Iterative Matrix Inverse in Encrypted Domain

T.M. Ahn, K.H. Lee, J.S. Yoo, J.W. Yoon

Proceedings of the European Symposium on Research in Computer Security (ESORICS), 2023

An iterative approach for computing matrix inverses efficiently over encrypted data.

Principal Component Analysis over the Boolean Circuit Within TFHE Scheme

H.J. Doh, J.S. Yoo, M.Y. Hong, K.H. Lee, T.M. Ahn, J.W. Yoon

Proceedings of the International Conference on Information Security Applications (WISA), 2023

We implement PCA using boolean circuits under the TFHE homomorphic encryption framework.

A Bitwise Logistic Regression Using Binary Approximation and Real Number Division in Homomorphic Encryption Scheme

J.S. Yoo, J.H. Hwang, B.K. Song, J.W. Yoon

Proceedings of the 15th International Conference on Information Security Practice and Experience (ISPEC), 2019

Logistic regression executed via bitwise operations to support encrypted data analysis.

Logarithm Design on Encrypted Data with Bitwise Operation

J.S. Yoo, B.K. Song, J.W. Yoon

Proceedings of the 19th International Conference on Information Security Applications (WISA), 2018

A bitwise approach to compute logarithms directly over encrypted data.

Versatile and Fast Location-Based Private Information Retrieval with Fully Homomorphic Encryption over the Torus

J.S. Yoo, T.H. Kim, J.W. Yoon

Preprint (Submitted to Journal), 2024

This manuscript introduces a flexible PIR scheme leveraging torus-based FHE to enable efficient location-based queries.

Bidirectional Biometric Authentication Using Transciphering and (T)FHE

J.S. Yoo, T.M. Ahn, J.W. Yoon

Preprint (Submitted to Journal), 2024

This paper presents a lightweight biometric authentication protocol using TFHE-based transciphering to minimize ciphertext size and network overhead.

Accelerating Secure Permutation: Application to Matrix Algebra

J.W. Heo, J.S. Yoo, B.K. Song, J.W. Yoon

IEEE Access, 2024

We present techniques to accelerate secure permutation operations with applications to encrypted matrix computations.

t-BMPNet: Trainable Bitwise Multilayer Perceptron Neural Network over Fully Homomorphic Encryption Scheme

J.S. Yoo, J.W. Yoon

Security and Communication Networks, 2021

This paper introduces t-BMPNet, a neural network designed for efficient evaluation in the encrypted domain.

LWE와 완전동형암호에 대한 분석 및 동향

J.S. Yoo, J.W. Yoon

Review of KIISC, 2020

An overview of lattice-based encryption and fully homomorphic encryption developments.

A Bitwise Design and Implementation for Privacy-Preserving Data Mining: From Atomic Operations to Advanced Algorithms

B.K. Song, J.S. Yoo, M.Y. Hong, J.W. Yoon

Security and Communication Networks, 2019

Comprehensive bitwise constructions enable efficient privacy-preserving data mining using FHE.