Published in Preprint (Submitted to Journal), 2024
This manuscript introduces a flexible PIR scheme leveraging torus-based FHE to enable efficient location-based queries.
Recommended citation: J.S. Yoo, T.H. Kim, J.W. Yoon. (2024). "Versatile and Fast Location-Based Private Information Retrieval with Fully Homomorphic Encryption over the Torus." Preprint.
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Published in Preprint (Submitted to Journal), 2024
This paper presents a lightweight biometric authentication protocol using TFHE-based transciphering to minimize ciphertext size and network overhead.
Recommended citation: J.S. Yoo, T.M. Ahn, J.W. Yoon. (2024). "Bidirectional Biometric Authentication Using Transciphering and (T)FHE." Preprint.
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Published in IEEE Access, 2024
We present techniques to accelerate secure permutation operations with applications to encrypted matrix computations.
Recommended citation: J.W. Heo, J.S. Yoo, B.K. Song, J.W. Yoon. (2024). "Accelerating Secure Permutation: Application to Matrix Algebra." IEEE Access.
Published in Security and Communication Networks, 2021
This paper introduces t-BMPNet, a neural network designed for efficient evaluation in the encrypted domain.
Recommended citation: J.S. Yoo, J.W. Yoon. (2021). "t-BMPNet: Trainable Bitwise Multilayer Perceptron Neural Network over Fully Homomorphic Encryption Scheme." Security and Communication Networks.
Published in Review of KIISC, 2020
An overview of lattice-based encryption and fully homomorphic encryption developments.
Recommended citation: J.S. Yoo, J.W. Yoon. (2020). "LWE와 완전동형암호에 대한 분석 및 동향." Review of KIISC.
Published in Security and Communication Networks, 2019
Comprehensive bitwise constructions enable efficient privacy-preserving data mining using FHE.
Recommended citation: B.K. Song, J.S. Yoo, M.Y. Hong, J.W. Yoon. (2019). "A Bitwise Design and Implementation for Privacy-Preserving Data Mining: From Atomic Operations to Advanced Algorithms." Security and Communication Networks.
Published in Proceedings of the 40th ACM/SIGAPP Symposium on Applied Computing (ACMSAC), 2025
An efficient method leveraging kernel tricks to accelerate encrypted data analysis.
Recommended citation: J.S. Yoo, B.K. Song, T.M. Ahn, J.W. Heo, J.W. Yoon. (2025). "Speed-up of Data Analysis with Kernel Trick in Encrypted Domain." In Proceedings of the 40th ACM/SIGAPP Symposium on Applied Computing (ACMSAC).
Published in 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.
Recommended citation: J.S. Yoo, M.Y. Hong, J.W. Heo, K.H. Lee, J.W. Yoon. (2024). "Fast Private Location-based Information Retrieval over the Torus." In Proceedings of the IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS).
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Published in 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.
Recommended citation: G.W. Jeon, M.Y. Hong, J.S. Yoo, J.W. Yoon, B.K. Song. (2023). "Secure Dimensionality Reduction: Applying Linear Discriminant Analysis over the TFHE Homomorphic Encryption Scheme." In Proceedings of the 14th International Conference on Information and Communication Technology Convergence (ICTC).
Published in Proceedings of the European Symposium on Research in Computer Security (ESORICS), 2023
An iterative approach for computing matrix inverses efficiently over encrypted data.
Recommended citation: T.M. Ahn, K.H. Lee, J.S. Yoo, J.W. Yoon. (2023). "Cheap and Fast Iterative Matrix Inverse in Encrypted Domain." In Proceedings of the European Symposium on Research in Computer Security (ESORICS), Springer.
Published in Proceedings of the International Conference on Information Security Applications (WISA), 2023
We implement PCA using boolean circuits under the TFHE homomorphic encryption framework.
Recommended citation: H.J. Doh, J.S. Yoo, M.Y. Hong, K.H. Lee, T.M. Ahn, J.W. Yoon. (2023). "Principal Component Analysis over the Boolean Circuit Within TFHE Scheme." In Proceedings of the International Conference on Information Security Applications (WISA).
Published in 15th International Conference on Information Security Practice and Experience (ISPEC), 2019
Logistic regression executed via bitwise operations to support encrypted data analysis.
Recommended citation: J.S. Yoo, J.H. Hwang, B.K. Song, J.W. Yoon. (2019). "A Bitwise Logistic Regression Using Binary Approximation and Real Number Division in Homomorphic Encryption Scheme." In Proceedings of the 15th International Conference on Information Security Practice and Experience (ISPEC).
Published in 19th International Conference on Information Security Applications (WISA), 2018
A bitwise approach to compute logarithms directly over encrypted data.
Recommended citation: J.S. Yoo, B.K. Song, J.W. Yoon. (2018). "Logarithm Design on Encrypted Data with Bitwise Operation." In Proceedings of the 19th International Conference on Information Security Applications (WISA).