Mahesh Sreekumar Rajasree
CISPA Helmholtz Center for Information Security, Sankt Ingbert, Germany

I am currently a Post-Doctoral Researcher at CISPA Helmholtz Center for Information Security, hosted by Prof. Nico Döttling. My research focuses on public-key cryptography and quantum cryptography.
Previously, I was a Post-Doctoral Fellow in the Department of Computer Science and Engineering, Indian Institute of Technology Delhi, where I worked under the guidance of Prof. Venkata Koppula.
I completed my PhD and MTech degree under the guidance of Prof. Manindra Agrawal in the Department of Computer Science and Engineering, Indian Institute of Technology, Kanpur. During that time, I was actively working on the cryptanalysis of symmetric-key cryptosystems and variants of subset-sum problem.
My Erdős number is 4 (Me -> Shashank K. Mehta -> Jitender S. Deogun -> Zsolt Tuza -> Paul Erdős).
News
May 12, 2025 | Paper presentation at PKC 2025, Røros, Norway. |
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May 4, 2025 | “A Note on Adaptive Security in Hierarchical Identity-Based Encryption” accepted in CRYPTO 2025! |
Feb 5, 2025 | “Non-Committing Identity-Based Encryption: Constructions and Applications” accepted in PKC 2025! |
Jan 8, 2025 | Paper presentation at ITCS 2025, New York, USA. |
Jan 5, 2025 | ITCS 2025 full paper presentation on YouTube. |
Selected Publications
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A Note on Adaptive Security in Hierarchical Identity-Based EncryptionIn Advances in Cryptology - CRYPTO, 2025
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Non-Committing Identity Based Encryption: Constructions and ApplicationsIn Public-Key Cryptography - PKC, 2025
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Incompressible Functional EncryptionIn Innovations in Theoretical Computer Science - ITCS, 2025
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Leakage-Resilient Incompressible Cryptography: Constructions and BarriersInternational Conference on the Theory and Application of Cryptology and Information Security - ASIACRYPT, 2024