Sujoy Sinha Roy

Ass.Prof. PhD

Secure Systems, Assistant Professor

Sujoy Sinha Roy is an assistant professor at IAIK,  the Graz University of Technology. He works on secure and efficient implementation of cryptographic algorithms on hardware and software platforms. He received the PhD degree in 2017 with 'Summa cum laude with congratulations from the examination committee' from COSIC, KU Leuven, Belgium. His doctoral thesis was awarded the 'IBM Innovation Award 2018' that recognizes an outstanding doctoral thesis in informatics. He is a co-designer of ‘Saber’ which is a finalist in NIST’s Post-Quantum Cryptography Standardization Project. Before joining TU Graz, he worked as an assistant professor at the University of Birmingham's Security and Privacy group, from Sep 2018 to Nov 2020.    
Sujoy Sinha Roy

Research

Sujoy is interested in the implementation aspects of cryptography.

Ongoing third-party funded projects

  • Secure and efficient implementation of Post-quantum Cryptography
  • Hardware acceleration of homomorphic encryption

Postdoctoral researchers

PhD researchers

MSc project researchers

  • Florian Hirner

Publications in 2021-22

  • Malik Imran and Felipe Almeida and Andrea Basso and Sujoy Sinha Roy and Samuel Pagliarini: High-speed SABER Key Encapsulation Mechanism in 65nm CMOS. IACR Cryptol. ePrint Arch. 2022: 530 (2022)
  • Ahmet Can Mert and Aikata and Sunmin Kwon and Youngsam Shin and Donghoon Yoo and Yongwoo Lee and Sujoy Sinha Roy: Medha: Microcoded Hardware Accelerator for computing on Encrypted Data. IACR Cryptol. ePrint Arch. 2022: 480 (2022)
  • Jipeng Zhang and Junhao Huang and Zhe Liu and Sujoy Sinha Roy: Time-memory Trade-offs for Saber+ on Memory-constrained RISC-V. IEEE Transactions on Computers 2022.
  • Prasanna RaviMartianus Frederic EzermanShivam BhasinAnupam ChattopadhyaySujoy Sinha Roy:
    Will You Cross the Threshold for Me? Generic Side-Channel Assisted Chosen-Ciphertext Attacks on NTRU-based KEMs. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2022(1): 722-761 (2022).
  • Prasanna RaviShivam BhasinSujoy Sinha RoyAnupam Chattopadhyay: On Exploiting Message Leakage in (few) NIST PQC Candidates for Practical Message Recovery and Key Recovery Attacks. IEEE Transactions on Information Forensics and Security 2021.
  • Sujoy Sinha RoyAhmet Can MertAikataSunmin KwonYoungsam ShinDonghoon Yoo:
    Accelerator for Computing on Encrypted Data. IACR Cryptol. ePrint Arch. 2021: 1555 (2021)
  • AikataAhmet Can MertDavid JacqueminAmitabh DasDonald MatthewsSantosh GhoshSujoy Sinha Roy: A Unified Cryptoprocessor for Lattice-based Signature and Key-exchange. IACR Cryptol. ePrint Arch. 2021: 1461 (2021)
  • Zhuang XuOwen PembertonSujoy Sinha RoyDavid F. Oswald: Magnifying Side-Channel Leakage of Lattice-Based Cryptosystems with Chosen Ciphertexts: The Case Study of Kyber. IEEE Transactions on Computers 2021.
  • Malik ImranFelipe AlmeidaJaan RaikAndrea BassoSujoy Sinha RoySamuel Pagliarini:
    Design Space Exploration of SABER in 65nm ASIC. ASHES@CCS 2021: 85-90
  • Andrea BassoSujoy Sinha Roy: Optimized Polynomial Multiplier Architectures for Post-Quantum KEM Saber. DAC 2021: 1285-1290

Teaching

  • Cryptographic Engineering‘ during the winter session. The course will teach how to implement cryptographic algorithms securely and efficiently.
    https://www.iaik.tugraz.at/ce