Crypto & Privacy Lab

Publications

2026

[2026/044]
Jindo: Practical Lattice-Based Polynomial Commitment for Zero-Knowledge Arguments
Intak Hwang, Hyeonbum Lee, Jinyeong Seo, Yongsoo Song

2025

[2025/382] ASIACRYPT
On the Security and Privacy of CKKS-based Homomorphic Evaluation Protocols
Intak Hwang, Seonhong Min, Jinyeong Seo, Yongsoo Song
[2024/2032] ASIACRYPT
Carousel: Fully Homomorphic Encryption with Bootstrapping over Automorphism Group
Intak Hwang, Seonhong Min, Yongsoo Song
[2025/216] ACM CCS
Practical TFHE Ciphertext Sanitization for Oblivious Circuit Evaluation
Intak Hwang, Seonhong Min, Jinyeong Seo, Yongsoo Song
[2024/1879] ACM CCS
Practical Zero-Knowledge PIOP for Maliciously Secure Multiparty Homomorphic Encryption
Intak Hwang, Hyeonbum Lee, Jinyeong Seo, Yongsoo Song
[2025/1255] SAC
Efficient Full Domain Functional Bootstrapping from Recursive LUT Decomposition
Intak Hwang, Shinwon Lee, Seonhong Min, Yongsoo Song
[2024/1502] IEEE S&P
MatriGear: Accelerating Authenticated Matrix Triple Generation with Scalable Prime Fields via Optimized HE Packing
Hyunho Cha, Intak Hwang, Seonhong Min, Jinyeong Seo, Yongsoo Song
[2025/429] ACM ASIACCS
Enhanced CKKS Bootstrapping with Generalized Polynomial Composites Approximation
Seonhong Min, Joon-Woo Lee, Yongsoo Song
[2025/395]
Provably Secure Approximate Computation Protocols from CKKS
Intak Hwang, Yisol Hwang, Miran Kim, Dongwon Lee, Yongsoo Song
[2025/203]
Ciphertext-Simulatable HE from BFV with Randomized Evaluation
Intak Hwang, Seonhong Min, Yongsoo Song

2024

[2024/1534]
More Efficient Lattice-based OLE from Circuit-private Linear HE with Polynomial Overhead
Leo de Castro, Duhyeong Kim, Miran Kim, Keewoo Lee, Seonhong Min, Yongsoo Song
[2024/109] ACM CCS
Simpler and Faster BFV Bootstrapping for Arbitrary Plaintext Modulus from CKKS
Jaehyung Kim, Jinyeong Seo, Yongsoo Song
[2024/306] CRYPTO
Concretely Efficient Lattice-based Polynomial Commitment from Standard Assumptions
Intak Hwang, Jinyeong Seo, Yongsoo Song
[2024/181]
Functional Bootstrapping for Packed Ciphertexts via Homomorphic LUT Evaluation
Dongwon Lee, Seonhong Min, Yongsoo Song
[2022/1460] PKC
Towards Practical Multi-key TFHE: Parallelizable, Key-Compatible, Quasi-linear Complexity
Hyesun Kwak, Seonhong Min, Yongsoo Song
[2021/1412] ACNS
A General Framework of Homomorphic Encryption for Multiple Parties with Non-Interactive Key-Aggregation
Hyesun Kwak, Dongwon Lee, Yongsoo Song, Sameer Wagh

2023

[2023/1328] WAHC
Optimizing HE operations via Level-aware Key-switching Framework
Intak Hwang, Jinyeong Seo, Yongsoo Song
[2022/347] ACM CCS
Asymptotically Faster Multi-Key Homomorphic Encryption from Homomorphic Gadget Decomposition
Taechan Kim, Hyesun Kwak, Dongwon Lee, Jinyeong Seo, Yongsoo Song
[2023/623] CRYPTO
Toward Practical Lattice-based Proof of Knowledge from Hint-MLWE
Duhyeong Kim, Dongwon Lee, Jinyeong Seo, Yongsoo Song
[2023/413] CRYPTO
Accelerating HE Operations from Key Decomposition Technique
Miran Kim, Dongwon Lee, Jinyeong Seo, Yongsoo Song
[2023/958] ACM ASIACCS
Faster TFHE Bootstrapping with Block Binary Keys
Changmin Lee, Seonhong Min, Jinyeong Seo, Yongsoo Song