NISER

PhD | Computer Science (Cryptology) from Indian Statistical Institute, 2006.

M.Tech | Computer Science from Indian Statistical Institute, 2003.

MSc | Mathematics from Utkal University, Bhubaneswar, India, 2001.

BSc | Mathematics (Honors) from Utkal University, Bhubaneswar, India, 1999.

Theoretical Computer Sciences, Coding Theory, Cryptology, Discrete Mathematics.

Journal

1. Sanjit Bhowmick, Deepak Kumar Dalai, Sihem Mesnager. On linear complementary pairs of algebraic geometry codes over finite fields. Discrete Mathematics, 347(12): 114193, 2024.
2. Deepak Kumar Dalai, Krishna Mallick. A class of weightwise almost perfectly balanced Boolean functions. Advances in Mathematics of Com-
   munications, 18(2): 480–504, 2024.
3. Deepak Kumar Dalai, Santu Pal, Santanu Sarkar. Some Conditional Cube Testers for Grain-128a of Reduced Rounds. IEEE Transactions on
   Computers, 71(6): 1374–1385, 2022. 
4. Deepak Kumar Dalai, Santu Pal, Santanu Sarkar. A state bit recovery algorithm with TMDTO attack on Lizard and Grain-128a. Design, Codes and Cryptography, 90(3): 489–521, 2022.
5. Dibyendu Roy, and Deepak Kumar Dalai. An Observation of Non-randomness in NFSR-Based Stream Ciphers with Reduced Initialization Round. Journal of Hardware and Systems Security, 5(2): 89–102, 2021.
6.  Deepak Kumar Dalai, Pinaki Sarkar. Bidirectional hash chains generically enhances resilience of key predistribution schemes. IET Wireless Sensor Systems, 10 (4):154-165, 2020.
7. Deepak Kumar Dalai, Subhamoy Maitra, Santu Pal, Dibyendu Roy. Distinguisher and non-randomness of Grain-v1 for 112, 114 and 116 initialisation rounds with multiple-bit difference in IVs. IET Information Security 13 (6):603-613, 2019.
8. Deepak Kumar Dalai, Pinaki Sarkar. Hash Chains Sensornet: A Key Predistribution Scheme for Distributed Sensor Networks Using Nets and Hash Chains. Sensors & Transducers 212 (5):39-49, 2017.
9. Deepak Kumar Dalai, Subhamoy Maitra, Sumanta Sarkar. Results on Rotation Symmetric Bent Functions. Discrete Mathematics, 309(8):2398-2409, April 2009.
10. Deepak Kumar Dalai, Subhamoy Maitra. Algebraic Immunity of Boolean Functions: Analysis and Constructions. Special Issue on Applied Cryptography and Data Security, Journal of Computacion y Sistemas, 12(3):297-321, 2009.
11. Deepak Kumar Dalai, Subhamoy Maitra, Sumanta Sarkar. Basic Theory in Construction of Boolean Functions with Maximum Possible Annihilator Immunity. Design, Codes and Cryptography, 40(1):41–58, July 2006.
12. Claude Carlet, Deepak Kumar Dalai, Kishan Chand Gupta, Subhamoy Maitra. Algebraic Immunity for Cryptographically Significant Boolean Functions: Analysis and Construction. IEEE Transactions on Information Theory, IT-52(7):3105–3121, 2006.

LNCS, Springer

1. Deepak Kumar Dalai, Krishna Mallick. Constructing WAPB Boolean Functions From the Direct Sum of WAPB Boolean Functions. In Progress
   in Cryptology - Indocrypt 2024, number 15495 in LNCS, pages 188–209. Springer Verlag, 2024.
2. Deepak Kumar Dalai. A Basic Theory of Lightweight Hierarchical Key Predistribution Scheme. In CyberICPS 2019, SECPRE 2019, SPOSE 2019, ADIoT 2019: Computer Security, number 11980 in LNCS, pages 325-340, Springer-verlag 2019.
3. Deepak Kumar Dalai, Santu Pal. Wip: Degree Evaluation of Grain-v1. In International Conference on Information Systems Security, ICISS 2019, number 11952 in LNCS, pages 239-251, Springer-verlag 2019.
4. Deepak Kumar Dalai, Santu Pal. Recovering Internal States of Grain-v1. In International Conference on Information Security Practice and Experience, ISPEC 2019, number 11879 in LNCS, pages 325-337, Springer-verlag 2019.
5. Deepak Kumar Dalai, Dibyendu Roy. An Observation of Non-randomness in the Grain Family of Stream Ciphers with Reduced Initialization Round. In International Conference on Security, Privacy, and Applied Cryptography Engineering, SPACE 2018, number 11348 in LNCS, pages 1-20, Springer-verlag 2018.
6. Deepak Kumar Dalai, Dibyendu Roy. A State Recovery Attack on ACORN-v1 and ACORN-v2. In 11th International Conference on Network and System Security, NSS 2017, number 10394 in LNCS, pages 332-345, Springer-verlag 2017.
7. Deepak Kumar Dalai, Pinaki Sarkar. Enhancing Resilience of KPS Using Bidirectional Hash Chains and Application on Sensornet. In 11th International Conference on Network and System Security, NSS 2017, number 10394 in LNCS, pages 683-693, Springer-verlag 2017.
8. Deepak Kumar Dalai, Pinaki Sarkar. Key Predistribution Schemes Using Bent Functions in Distributed Sensor Networks. In International Conference on Information Security and Cryptology, Inscrypt 2016, number 10143 in LNCS, pages 367-385, Springer-verlag 2017.
9. Deepak Kumar Dalai. On the Lower Block Triangular Nature of the Incidence Matrices to Compute the Algebraic Immunity of Boolean Functions. In Conference in Algebraic Informatics, CAI 2015, number 9270 in LNCS, pages 79-89, Springer-verlag 2015.
10. Deepak Kumar Dalai. On 3-to-1 and Power APN S-boxes. In Sequences and Their Applications, SETA 2008, number 5203 in LNCS, pages 377–389, Springer-verlag 2008.
11. Deepak Kumar Dalai, Subhamoy Maitra. Reducing the Number of Homogeneous Linear Equations in Finding Annihilators. In Sequences and Their Applications, SETA 2006, number 4086 in LNCS, pages 376–390, Springer-verlag 2006.
12. Deepak Kumar Dalai, Kishan Chand Gupta, Subhamoy Maitra. Algebraic Immunity for Cryptographically Significant Boolean Functions: Construction and Analysis in terms of Algebraic Immunity. In Fast Software Encryptions, FSE 2005, number 3557 in LNCS, pages 98–111. Springer-Verlag 2005.
13. Deepak Kumar Dalai, Kishan Chand Gupta, Subhamoy Maitra. Results on Algebraic Immunity for Cryptographically Significant Boolean Functions. In Progress in Cryptology - Indocrypt 2004, number 3348 in LNCS, pages 92–106. Springer -Verlag, 2004.

Conferences Presentations

1. Deepak Kumar Dalai, Krishna Mallick, Pierrick Méaux. Weightwise Almost Perfectly Balanced Functions, Construction From A Permutation
   Group Action View. In the 9th International Workshop on Boolean Functions and their Applications (BFA), 2024 Dubrovnik, Croatia.
2. Deepak Kumar Dalai, Krishna Mallick. On the Direct Sum of Weightwise Almost Perfectly Balanced Boolean Functions. In the 9th International Workshop on Boolean Functions and their Applications (BFA), 2024 Dubrovnik, Croatia.
3. Deepak Kumar Dalai, Krishna Mallick. A class of weightwise almost perfectly balanced Boolean functions with high weightwise nonlinearity. In
   the 8th International Workshop on Boolean Functions and their Applications (BFA), 2023 Voss, Norway.
4. Deepak Kumar Dalai, Krishna Mallick. A Class of Weightwise Almost Perfectly Balanced Boolean Functions. In ALgebraic and combinatorial methods for COding and CRYPTography (ALCOCRYPT), 2023 CIRM, Marseille, France.
5. Deepak Kumar Dalai, Pinaki Sarkar. Sensornet - A Key Predistribution Scheme for Distributed Sensors using Nets. In Proceedings of the 6th
   International Conference on Sensor Networks SENSORNETS-2017. The paper was awarded as the best paper in the conference.
6. Deepak Kumar Dalai, Subhamoy Maitra. Balanced Boolean Functions with (more than) Maximum Algebraic Immunity. In Workshop on Cryptography and Coding theory, 2007, page 99-108, proceedings of WCC, 2007. 
7. Subhamoy Maitra, Sumanta Sarkar, Deepak Kumar Dalai. On Dihedral Group Invariant Boolean Functions. In International Workshop on
   Boolean Functions : Cryptography and Applications, BFCA 2007.
8. Michael W. David, Deepak Kumar Dalai, Joydeep Mitra,  Kouichi Sakurai. Statistically Based Intrusion Alert Point Detection. In The 2nd Joint
   Workshop on Information Security, JWIS 2007.
9. Claude Carlet, Deepak Kumar Dalai, Subhamoy Maitra. Cryptographic Properties and Structure of Boolean Functions with Full Algebraic Immu-
   nity. In IEEE International Symposium on Information Theory, ISIT 2006.
10. Deepak Kumar Dalai, Kishan Chand Gupta, Subhamoy Maitra. Notion of Algebraic Immunity and Its evaluation Related to Fast Algebraic
    Attacks. In International Workshop on Boolean Functions : Cryptography and Applications, BFCA 2006.
11. Deepak Kumar Dalai, Subhamoy Maitra, Sumanta Sarkar. Results on Rotation Symmetric Bent Functions. In International Workshop on Boolean Functions : Cryptography and Applications, BFCA 2006. 
12. Deepak Kumar Dalai, Avishek Adhikari. Towards finding affine transformation between two Boolean functions. In National Workshop on Cryp-
    tology, 2006, Pune, India.

Boolean functions, Symmetric-key Cryptography, Code-based cryptography, Key predistribution, Coding theory.