On the (Im)possibility of Time-Lock Puzzles in the Quantum Random Oracle Model. - Abtin Afshar; Kai-Min Chung; Yao-Ching Hsieh; Yao-Ting Lin; Mohammad Mahmoody (IACR Cryptol. ePrint Arch., 2023)

Fine-Grained Non-Interactive Key-Exchange: Constructions and Lower Bounds. - Abtin Afshar; Geoffroy Couteau; Mohammad Mahmoody; Elahe Sadeghi (IACR Cryptol. ePrint Arch., 2023)

Leveled Fully-Homomorphic Signatures from Batch Arguments. - Abtin Afshar; Jiaqi Cheng; Rishab Goyal (IACR Cryptol. ePrint Arch., 2024)

Encrypted RAM Delegation: Applications to Rate-1 Extractable Arguments, Homomorphic NIZKs, MPC, and more. - Abtin Afshar; Jiaqi Cheng; Rishab Goyal; Aayush Yadav; Saikumar Yadugiri (IACR Cryptol. ePrint Arch., 2024)

Verifiable Streaming Computation and Step-by-Step Zero-Knowledge. - Abtin Afshar; Rishab Goyal (IACR Cryptol. ePrint Arch., 2025)