On the (in)security of Proofs-of-space based longest-chain blockchains
M.A. Baig, K.Z. Pietrzak, in:, 29th International Conference on Financial Cryptography and Data Security, Springer Nature, 2026, pp. 127–142.

Route discovery in private payment channel networks
Z. Avarikioti, M. Bastankhah, M.A. Maddah-Ali, K.Z. Pietrzak, J. Svoboda, M.X. Yeo, in:, Computer Security. ESORICS 2024 International Workshops, Springer Nature, 2025, pp. 207–223.

Space-deniable proofs
J. Dujmovic, C.U. Günther, K.Z. Pietrzak, in:, 23rd International Conference on Theory of Cryptography, Springer Nature, 2025, pp. 171–202.

Continuous group-key agreement: Concurrent updates without pruning
B. Auerbach, M. Cueto Noval, B. Erol, K.Z. Pietrzak, in:, 45th Annual International Cryptology Conference, Springer Nature, 2025, pp. 141–172.

Nakamoto consensus from multiple resources
M.A. Baig, C.U. Günther, K.Z. Pietrzak, in:, 7th Conference on Advances in Financial Technologies, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2025.

Watermarkable and zero-knowledge Verifiable Delay Functions from any proof of exponentiation
C. Hoffmann, K.Z. Pietrzak, in:, 28th IACR International Conference on Practice and Theory of Public-Key Cryptography, Springer Nature, 2025, pp. 36–66.

The cost of maintaining keys in dynamic groups with applications to multicast encryption and group messaging
M. Anastos, B. Auerbach, M.A. Baig, M. Cueto Noval, M.A. Kwan, G. Pascual Perez, K.Z. Pietrzak, in:, 22nd International Conference on Theory of Cryptography, Springer Nature, 2024, pp. 413–443.

Deniability in automated contact tracing: Impossibilities and possibilities
C.U. Günther, K.Z. Pietrzak, Proceedings on Privacy Enhancing Technologies 2024 (2024) 636–648.

Trapdoor memory-hard functions
B. Auerbach, C.U. Günther, K.Z. Pietrzak, in:, 43rd Annual International Conference on the Theory and Applications of Cryptographic Techniques, Springer Nature, 2024, pp. 315–344.

Fully automated selfish mining analysis in efficient proof systems blockchains
K. Chatterjee, A. Ebrahimzadeh, M. Karrabi, K.Z. Pietrzak, M.X. Yeo, D. Zikelic, in:,  Proceedings of the 43rd Annual ACM Symposium on Principles of Distributed Computing, Association for Computing Machinery, 2024, pp. 268–278.

DeCAF: Decentralizable CGKA with fast healing
J.F. Alwen, B. Auerbach, M. Cueto Noval, K. Klein, G. Pascual Perez, K.Z. Pietrzak, in:, C. Galdi, D.H. Phan (Eds.), Security and Cryptography for Networks: 14th International Conference, Springer Nature, Cham, 2024, pp. 294–313.

Random oracle combiners: Breaking the concatenation barrier for collision-resistance
Y. Dodis, N. Ferguson, E. Goldin, P. Hall, K.Z. Pietrzak, in:, 43rd Annual International Cryptology Conference, Springer Nature, 2023, pp. 514–546.

On the cost of post-compromise security in concurrent Continuous Group-Key Agreement
B. Auerbach, M. Cueto Noval, G. Pascual Perez, K.Z. Pietrzak, in:, 21st International Conference on Theory of Cryptography, Springer Nature, 2023, pp. 271–300.

Certifying giant nonprimes
C. Hoffmann, P. Hubádek, C. Kamath, K.Z. Pietrzak, in:, Public-Key Cryptography - PKC 2023, Springer Nature, 2023, pp. 530–553.

Hide & Seek: Privacy-preserving rebalancing on payment channel networks
G. Avarikioti, K.Z. Pietrzak, I. Salem, S. Schmid, S. Tiwari, M.X. Yeo, in:, Financial Cryptography and Data Security, Springer Nature, 2022, pp. 358–373.

Wiser: Increasing throughput in payment channel networks with transaction aggregation
S. Tiwari, M.X. Yeo, Z. Avarikioti, I. Salem, K.Z. Pietrzak, S. Schmid, in:, Proceedings of the 4th ACM Conference on Advances in Financial Technologies, Association for Computing Machinery, 2022, pp. 217–231.

Practical statistically-sound proofs of exponentiation in any group
C. Hoffmann, P. Hubádek, C. Kamath, K. Klein, K.Z. Pietrzak, in:, Advances in Cryptology – CRYPTO 2022, Springer Nature, 2022, pp. 370–399.

CoCoA: Concurrent continuous group key agreement
J. Alwen, B. Auerbach, M. Cueto Noval, K. Klein, G. Pascual Perez, K.Z. Pietrzak, M. Walter, in:, Advances in Cryptology – EUROCRYPT 2022, Springer Nature, Cham, 2022, pp. 815–844.

Trojan-resilience without cryptography
S. Chakraborty, S. Dziembowski, M. Gazka, T. Lizurej, K.Z. Pietrzak, M.X. Yeo, in:, Springer Nature, 2021, pp. 397–428.

On treewidth, separators and Yao’s garbling
C. Kamath Hosdurg, K. Klein, K.Z. Pietrzak, in:, 19th International Conference, Springer Nature, 2021, pp. 486–517.