About me

I am a research scientist and a technical lead of fully homomorphic encryption (FHE) algorithm & workload team in Security & Privacy Research (SPR) group at Intel Labs, Hillsboro. My major research topics are FHE and lattice-based cryptography, but I am broadly interested in all aspects of cryptography and mathematical problems derived from them.

I completed my PhD in 2021 at Seoul National University (SNU), where I was advised by Jung Hee Cheon. In 2015, I graduated with Highest Honors from SNU where I majored in Mathematical Sciences.

News and Upcoming Events

• The paper [KKS+24] entitled “Harnessing the potential of shared data in a secure, inclusive, and resilient manner via multi-key homomorphic encryption” was published at Scientific Reports.

• The paper [BCC+24] entitled “Security Guidelines for Implementing Homomorphic Encryption” was uploaded to ePrint Archive. We provide an updated LWE parameter tables with 128-bit security and functional parameters per each FHE scheme that can be adopted directly to the implementation.

• The paper [KWK+24] entitled “Towards a Polynomial Instruction Based Compiler for Fully Homomorphic Encryption Accelerators” was uploaded to eprint Archive, which introduces a new instruction set called P-ISA for a general FHE accelerator.

• The paper [DKMS23] entitled “Faster Amortized FHEW bootstrapping using Ring Automorphisms” was accepted to PKC 2024.

• The paper [AAB+23] entitled “High-precision RNS-CKKS on fixed but smaller word-size architectures: theory and application” was accepted to WAHC 2023.

• The paper [KLSS23] entitled “Toward Practical Lattice-based Proof of Knowledge from Hint-MLWE” was accepted to CRYPTO 2023.