My research lies in the ICT field with primary focuses on sinal design, error-correcting codes, cryptography, and security (short introductory videos for error-correcting codes, cryptography, and cybersecurity). More specifically, my research interests include

• signal design: signals/waveforms with desirable correlation, peak-to-average power ratio (PAPR), ambiguity for reliable and efficient wireless communications 
• coding theory: error-correction codes in Hamming metric and rank metric, and their applications for reliable data communication and storage
• cryptography: symmetric cryptographic primitives, homomorphic encryptions, searchable encryptions, code-based cryptography
• security: intrusion detection and secure authentication
• blockchain: design and applications of blockchain
• discrete mathematics: permutations polynomials, sequences, cryptographically strong functions and interplay among them

Selected Recent publications (Full List at DBLP)

• Chunlei Li: A Survey on Complexity Measures for Pseudo-Random Sequences. Cryptogr. 8(2): 25 (2024)
• Ermes Franch, Philippe Gaborit, Chunlei Li: Generalized Low-Rank Parity-Check Codes. IEEE Trans. Inf. Theory 70(8): 5589-5605 (2024)
• Qin Yuan, Chunlei Li, Xiangyong Zeng, Tor Helleseth, Debiao He:
  Further Investigations on Nonlinear Complexity of Periodic Binary Sequences. IEEE Trans. Inf. Theory 70(7): 5376-5391 (2024)
• Palash Sarkar, Chunlei Li, Sudhan Majhi, Zilong Liu: New Correlation Bound and Construction of Quasi-Complementary Sequence Sets. IEEE Trans. Inf. Theory 70(3): 2201-2223 (2024)
• Kangquan Li, Chunlei Li, Tor Helleseth, Longjiang Qu: Further investigations on permutation-based constructions of bent functions. J. Comb. Theory A 199: 105779 (2023)
• Guang Yang, Chunlei Li, Kjell E. Marstein: A blockchain-based architecture for securing electronic health record systems. Concurr. Comput. Pract. Exp. 33(14) (2021)
• Tor Helleseth, Daniel J. Katz, Chunlei Li: The Resolution of Niho's Last Conjecture Concerning Sequences, Codes, and Boolean Functions. IEEE Trans. Inf. Theory 67(10): 6952-6962 (2021)

Norwegian: B2

English: Fluent

Chinese: Mother Tongue

 

My teaching activities can be found at this link

• INF243-Algebraic Coding, University of Bergen (2024,2023,2022 Spring)
• INF140-Introduction to Cyber Security, University of Bergen (2023,2022,2021,2020 Autumn)
• INF143A-Applied Cryptography, University of Bergen (2021 Spring)
• INF142-Compute Networks, University of Bergen (2019 Spring)
• INF240-Basic Codes, University of Bergen (2018 Spring)
• DAT510-Security and Vulnerability in Network, University of Stavanger (2015, 2016 Autumn)

2016

• Chaoyun Li; Xiangyong Zeng; Chunlei Li et al. (2016). Construction of de Bruijn sequences from LFSRs with reducible characteristic polynomials. (external link)
• Chunlei Li; Tor Helleseth (2016). Quasi-perfect linear codes from planar and APN functions. (external link)

2019

• Lilya Budaghyan; Chunlei Li; Matthew Geoffrey Parker (2019). Special Issue on Mathematical Methods for Cryptography. (external link)
• Vladmir Edemsky; Chunlei Li; Xiangyong Zeng et al. (2019). The linear complexity of generalized cyclotomic binary sequences of period p^n. (external link)
• Chunlei Li (2019). Interpolation-based Decoding of Nonlinear Maximum Rank Distance Codes. (external link)
• Chunlei Li (2019). Interpolation-based Decoding of Nonlinear Maximum Rank Distance Codes. (external link)
• Chunlei Li; Yang Yang (2019). On three conjectures of binary sequences with low odd-periodic autocorrelation. (external link)
• Chunlei Li; Wrya Kadir (2019). On decoding additive generalized twisted Gabidulin codes. (external link)

2017

• Adel Alahmadi; Hussain Alhazmi; Shakir Ali et al. (2017). An analogue of the ℤ4-Goethals code in non-primitive length. (external link)
• Jinyong Shan; Lei Hu; Xiangyong Zeng et al. (2017). A construction of 1-resilient Boolean functions with good cryptographic properties. (external link)
• Yongbo Xia; Chunlei Li (2017). Three-weight ternary linear codes from a family of power functions. (external link)

2024

• Yanan Wu; Pantelimon Stănică; Chunlei Li et al. (2024). Bivariate functions with low c-differential uniformity. (external link)
• Chunlei Li; Constanza Susana Riera; Pantelimon Stanica et al. (2024). On the codebook design for NOMA schemes from bent functions.. (external link)
• Palash Sarkar; Chunlei Li; Sudhan Majhi et al. (2024). New Correlation Bound and Construction of Quasi-Complementary Sequence Sets. (external link)
• Qin Yuan; Chunlei Li; Xiangyong Zeng et al. (2024). Further Investigations on Nonlinear Complexity of Periodic Binary Sequences. (external link)

2021

• Anne Canteaut; Lukas Kölsch; Chao Li et al. (2021). Autocorrelations of Vectorial Boolean Functions. (external link)
• Wrya Karim Kadir Kadir; Chunlei Li; Ferdinando Zullo (2021). On interpolation-based decoding of a class of maximum rank distance codes. (external link)
• Wrya Karim Kadir Kadir; Chunlei Li; Ferdinando Zullo (2021). Decoding a class of maximum Hermitian rank metric codes. (external link)

2012

• Chunlei Li; Tor Helleseth (2012). New nonbinary sequence families with low correlation and large linear span. (external link)
• Guang Gong; Tor Helleseth; Honggang Hu et al. (2012). New Three-Valued Walsh Transforms from Decimations of Helleseth-Gong Sequences. (external link)
• Chunlei Li (2012). The lower bound of the second order nonlinearity of a class of Bent functions. (external link)

2020

• Yongbo Xia; Xianglai Zhang; Chunlei Li et al. (2020). The differential spectrum of a ternary power mapping. (external link)

2018

• Ziran Tu; Xiangyong Zeng; Chunlei Li et al. (2018). A class of new permutation trinomials. (external link)
• Cunsheng Ding; Chunlei Li; Yongbo Xia (2018). Another generalisation of the binary Reed–Muller codes and its applications. (external link)

2014

• Yongbo Xia; Chunlei Li; Xiangyong Zeng et al. (2014). Some results on cross-correlation distribution between a p-Ary m-sequence and its decimated sequences. (external link)
• Chaoyun Li; Xiangyong Zeng; Chunlei Li et al. (2014). A class of de Bruijn sequences. (external link)
• Chunlei Li (2014). Sequences and Linear Codes from Highly Nonlinear Functions. (external link)
• Jiao Li; Claude Carlet; Xiangyong Zeng et al. (2014). Two constructions of balanced Boolean functions with optimal algebraic immunity, high nonlinearity and good behavior against fast algebraic attacks. (external link)

2013

• Jie Li; Xiangyong Zeng; Xiaohu Tang et al. (2013). A family of quadriphase sequences of period 4(2 n−1)with low correlation and large linear span. (external link)

2022

• Haode Yan; Yongbo Xia; Chunlei Li et al. (2022). The Differential Spectrum of the Power Mapping x^pn^-3. (external link)

See a complete overview of publications in Cristin.

My publications in the aforementioned areas can be found at this link. Below are the most recent ones

1. ForestWeb3.0, funded by the Biodiversa+ (Partner)
2. SEquences and Their Applications, funded by the Research Council of Norway (Principle Investigator)
3. Secure E-Healthcare Data Sharing by Blockchain Technology, funded by the Uni-Nett Vest