Jiaxin Pan

About

Jiaxin Pan is an associate professor (førsteamanuensis) at the Department of Mathematical Sciences. He bleongs to the Algebra Group. He obtained his PhD from Ruhr-Universität Bochum (Germany) and after that he was a postdoc at Karlsruhe Institute of Technology (Germany).

(Starting October, I will be on leave and become a Professor at the University of Kassel, Germany. Grateful for the past productive years at NTNU. Homepage here may not get updated that often.)

Research Interests

Pan is interested in (public-key) cryptography, in particular, cryptographic systems with mathematically sound proofs. More specifically, he is interested in:

Identity-based (or, more general, attribute-based) encryption schemes
(Non-interactive) zero-knowledge proof systems
(Structure-preserving) signature schemes
Tight security reductions
More general topics (in cryptography) that he is fascinated by

Most of his work are published at top-tier journals and conferences (such as Journal of Cryptology, Crypto, Eurocrypt, Asiacrypt, etc.). Please visit his DBLP for a more up-to-date list of his publications.

Research Projects

2022 – 2026: NTNU Outstanding Academic Fellows Programme (Career development award)
2021 – 2025: Principal investigator of a Young Research Talent project, Reserch Council of Norway, under the topic ground-breaking research (FRIPRO)
2021 – 2023: Principal investigator (jointly with Sanjam Garg from UC Berkeley) of a Peder Sather Grant

Program committees

It is my great honor to serve as a PC member of the following flagship and renowned international conferences:

IACR Crypto: 2024
IACR Eurocrypt: 2023, 2024
IACR Asiacrypt: 2019, 2020, 2021
IACR PKC: 2022
CT-RSA: 2020, 2021
ESORICS: 2021, 2022
ICICS: 2023
ISC: 2023

Recent Publications at Peer-Reviewed Conference Proceedings and Journals

My research is regularly published at the flagship IACR conferences (such as ASIACRYPT, CRYPTO, and EUROCRYPT) and the major area IACR conference (PKC). One of them was invited and published in the prestigious journal, Journal of Cryptology.

The following is a list of my recent publications (still in construction).

2023

Jiaxin Pan and Runzhi Zeng. A Generic Construction of Tightly Secure Password-based Authenticated Key Exchange. Proc. of ASIACRYPT 2023. (Full version)

Jiaxin Pan, Benedikt Wagner, and Runzhi Zeng. Tighter Security for Generic Authenticated Key Exchange in the QROM. Proc. of ASIACRYPT 2023. (Full version)

Yuyu Wang, Chuanjie Su, Jiaxin Pan, and Yu Chen. A Simple and Efficient Framework of Proof Systems for NP. Proc. of ASIACRYPT 2023. (Full version)

Yuyu Wang, Jiaxin Pan, and Yu Chen. Fine-Grained Secure Attribute-Based Encryption. Journal of Cryptology. (Full version)

Masayuki Abe, Dennis Hofheinz, Ryo Nishimaki, Miyako Ohkubo, and Jiaxin Pan. Compact Structure-preserving Signatures with Almost Tight Security. Journal of Cryptology.

Jiaxin Pan, Chen Qian, and Benedikt Wagner. Generic Constructions of Master-Key KDM Secure Attribute-based Encryption. Designs, Codes and Cryptography.

Jiaxin Pan, Benedikt Wagner, and Runzhi Zeng. Lattice-based Authenticated Key Exchange with Tight Security. Proc. of CRYPTO 2023. (Full version)

Jiaxin Pan and Benedikt Wagner. Chopsticks: Fork-Free Two-Round Multi-Signatures from Non-Interactive Assumptions. Proc. of EUROCRYPT 2023. (Full version)

Yao Jiang Galteland and Jiaxin Pan. Backward-Leak Uni-Directional Updatable Encryption from (Homomorphic) Public Key Encryption. Proc. of PKC 2023. (Full version)

Eike Kiltz, Jiaxin Pan, Doreen Riepel, and Magnus Ringerud. Multi-User CDH Problems and the Concrete Security of NAXOS and HMQV. Proc. of CT-RSA 2023. (Full version)

2022

Jiaxin Pan and Runzhi Zeng. Compact and Tightly Selective-Opening Secure Public-key Encryption Schemes. Proc. of ASIACRYPT 2022.

Yuyu Wang and Jiaxin Pan. Unconditionally Secure NIZK in the Fine-Grained Setting. Proc. of ASIACRYPT 2022. (Full version).

Jiaxin Pan, Chen Qian, and Magnus Ringerud. Signed (Group) Diffie-Hellman Key Exchange with Tight Security. Journal of Cryptology.

Yuyu Wang and Jiaxin Pan. Non-Interactive Zero-Knowledge Proofs with Fine-Grained Security. Proc. of EUROCRYPT 2022 (Full version).

Jiaxin Pan and Benedikt Wagner. Lattice-based Signatures with Tight Adaptive Corruptions and More. Proc. of PKC 2022. (Full version)

2021

Yuyu Wang, Jiaxin Pan, and Yu Chen. Fine-grained Secure Attribute-based Encryption. Proc. of CRYPTO 2021.

Shuai Han, Tibor Jager, Eike Kiltz, Shengli Liu, Jiaxin Pan, Doreen Riepel, and Sven Schäge. Authenticated Key Exchange and Signatures with Tight Security in the Standard Model. Proc. of CRYPTO 2021. (Full version)

Jiaxin Pan and Benedikt Wagner. Short Identity-Based Signatures with Tight Security from Lattices. Proc. of PQCRYPTO 2021. (Full version)

Jiaxin Pan, Chen Qian, and Magnus Ringerud. Signed Diffie-Hellman Key Exchange with Tight Security. Proc. of CT-RSA 2021. (Full version)

2020

Roman Langrehr and Jiaxin Pan. Unbounded HIBE with Tight Security. Proc. of ASIACRYPT 2020. (Full version)

Roman Langrehr and Jiaxin Pan. Tightly Secure Hierarchical Identity-Based Encryption. Journal of Cryptology. (Invited)

Jiaxin Pan and Magnus Ringerud. Signatures with Tight Multi-User Security from Search Assumptions. Proc. of ESORICS 2020 (Full version)

Roman Langrehr and Jiaxin Pan. Hierarchical Identity-Based Encryption with Tight Multi-Challenge Security. Proc. of PKC 2020 (Full version)

Publications

2019

Abe, Masayuki; Jutla, Charanjit S; Ohkubo, Miyako; Pan, Jiaxin; Roy, Arnab; Wang, Yuyu. (2019) Shorter QA-NIZK and SPS with Tighter Security. Lecture Notes in Computer Science (LNCS)
Academic article
Zhang, Xiao; Liu, Shengli; Pan, Jiaxin; Gu, Dawu. (2019) Tightly secure signature schemes from the LWE and subset sum assumptions. Theoretical Computer Science
Academic article

Journal publications

Kiltz, Eike; Pan, Jiaxin; Riepel, Doreen; Ringerud, Magnus Dotset. (2023) Multi-user CDH Problems and the Concrete Security of NAXOS and HMQV. Lecture Notes in Computer Science (LNCS)
Academic article
Abe, Masayuki; Hofheinz, Dennis; Nishimaki, Ryo; Ohkubo, Miyako; Pan, Jiaxin. (2023) Compact Structure-Preserving Signatures with Almost Tight Security. Journal of Cryptology
Academic article
Pan, Jiaxin; Wagner, Benedikt. (2023) Chopsticks: Fork-Free Two-Round Multi-signatures from Non-interactive Assumptions. Lecture Notes in Computer Science (LNCS)
Academic article
Galteland, Yao Jiang; Pan, Jiaxin. (2023) Backward-Leak Uni-Directional Updatable Encryption from (Homomorphic) Public Key Encryption. Lecture Notes in Computer Science (LNCS)
Academic article
Pan, Jiaxin; Qian, Chen; Wagner, Benedikt. (2023) Generic constructions of master-key KDM secure attribute-based encryption. Designs, Codes and Cryptography
Academic article
Wang, Yuyu; Pan, Jiaxin; Chen, Yu. (2023) Fine-Grained Secure Attribute-Based Encryption. Journal of Cryptology
Academic article
Pan, Jiaxin; Zeng, Runzhi. (2022) Compact and Tightly Selective-Opening Secure Public-key Encryption Schemes. Lecture Notes in Computer Science (LNCS)
Academic article
Wang, Yuyu; Pan, Jiaxin. (2022) Unconditionally Secure NIZK in the Fine-Grained Setting . Lecture Notes in Computer Science (LNCS)
Academic article
Wang, Yuyu; Pan, Jiaxin. (2022) Non-Interactive Zero-Knowledge Proofs with Fine-Grained Security. Lecture Notes in Computer Science (LNCS)
Academic article
Pan, Jiaxin; Qian, Chen; Ringerud, Magnus. (2022) Signed (Group) Diffie–Hellman Key Exchange with Tight Security. Journal of Cryptology
Academic article
Pan, Jiaxin; Wagner, Benedikt. (2022) Lattice-Based Signatures with Tight Adaptive Corruptions and More. Lecture Notes in Computer Science (LNCS)
Academic article
Pan, Jiaxin; Wagner, Benedikt. (2021) Short Identity-Based Signatures with Tight Security from Lattices. Lecture Notes in Computer Science (LNCS)
Academic article
Han, Shuai; Jager, Tibor; Kiltz, Eike; Liu, Shengli; Pan, Jiaxin; Riepel, Doreen. (2021) Authenticated Key Exchange and Signatures with Tight Security in the Standard Model. Lecture Notes in Computer Science (LNCS)
Academic article
Wang, Yuyu; Pan, Jiaxin; Chen, Yu. (2021) Fine-Grained Secure Attribute-Based Encryption. Lecture Notes in Computer Science (LNCS)
Academic article
Pan, Jiaxin; Qian, Chen; Ringerud, Magnus. (2021) Signed Diffie-Hellman Key Exchange with Tight Security. Lecture Notes in Computer Science (LNCS)
Academic article
Langrehr, Roman; Pan, Jiaxin. (2020) Tightly Secure Hierarchical Identity-Based Encryption. Journal of Cryptology
Academic article
Pan, Jiaxin; Ringerud, Magnus. (2020) Signatures with Tight Multi-user Security from Search Assumptions. Lecture Notes in Computer Science (LNCS)
Academic article
Langrehr, Roman; Pan, Jiaxin. (2020) Hierarchical Identity-Based Encryption with Tight Multi-challenge Security. Lecture Notes in Computer Science (LNCS)
Academic article
Langrehr, Roman; Pan, Jiaxin. (2020) Unbounded HIBE with Tight Security. Lecture Notes in Computer Science (LNCS)
Academic article
Abe, Masayuki; Jutla, Charanjit S; Ohkubo, Miyako; Pan, Jiaxin; Roy, Arnab; Wang, Yuyu. (2019) Shorter QA-NIZK and SPS with Tighter Security. Lecture Notes in Computer Science (LNCS)
Academic article
Zhang, Xiao; Liu, Shengli; Pan, Jiaxin; Gu, Dawu. (2019) Tightly secure signature schemes from the LWE and subset sum assumptions. Theoretical Computer Science
Academic article

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Publications

2023

2022

2021

2020

2019

Journal publications

Teaching

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Språkvelger

Jiaxin Pan

Jiaxin Pan

About

Competencies

Publications

2023

2022

2021

2020

2019

Journal publications

Teaching

Courses