Hierarchical Identity-Based Encryption with Tight Multi-Challenge Security. - Roman Langrehr; Jiaxin Pan 001 (IACR Cryptol. ePrint Arch., 2020)

Unbounded HIBE with Tight Security. - Roman Langrehr; Jiaxin Pan 001 (IACR Cryptol. ePrint Arch., 2020)

Tightly Secure Hierarchical Identity-Based Encryption. - Roman Langrehr; Jiaxin Pan 001 (J. Cryptol., 2020)

Towards Tight Adaptive Security of Non-Interactive Key Exchange. - Julia Hesse; Dennis Hofheinz; Lisa Kohl; Roman Langrehr (IACR Cryptol. ePrint Arch., 2021)

On Structure-Preserving Cryptography and Lattices. - Dennis Hofheinz; Kristina Hostáková; Roman Langrehr; Bogdan Ursu (IACR Cryptol. ePrint Arch., 2022)

On the Multi-User Security of LWE-based NIKE. - Roman Langrehr (IACR Cryptol. ePrint Arch., 2023)

On the Black-Box Complexity of Private-Key Inner-Product Functional Encryption. - Mohammad Hajiabadi; Roman Langrehr; Adam O'Neill; Mingyuan Wang 001 (TCC (3), 2024)

Access-Controlled Inner Product Function-Revealing Encryption. - Ojaswi Acharya; Weiqi Feng; Roman Langrehr; Adam O'Neill (IACR Cryptol. ePrint Arch., 2024)

On the Black-Box Complexity of Private-Key Inner-Product Functional Encryption. - Mohammad Hajiabadi; Roman Langrehr; Adam O'Neill; Mingyuan Wang (IACR Cryptol. ePrint Arch., 2024)

Non-Interactive Key Exchange: New Notions, New Constructions, and Forward Security. - Suvradip Chakraborty; Dennis Hofheinz; Roman Langrehr (IACR Cryptol. ePrint Arch., 2025)

Malleable SNARKs and Their Applications. - Suvradip Chakraborty; Dennis Hofheinz; Roman Langrehr; Jesper Buus Nielsen; Christoph Striecks; Daniele Venturi 001 (IACR Cryptol. ePrint Arch., 2025)

On Deniable Authentication against Malicious Verifiers. - Rune Fiedler; Roman Langrehr (IACR Cryptol. ePrint Arch., 2025)

Limits on the Power of Constrained PRFs and Identity-based Cryptography. - Roman Langrehr (IACR Cryptol. ePrint Arch., 2025)