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127 Publications
2021 | Conference Paper | IST-REx-ID: 10407 | 
Chakraborty, Suvradip, Stefan Dziembowski, Małgorzata Gałązka, Tomasz Lizurej, Krzysztof Z Pietrzak, and Michelle X Yeo. “Trojan-Resilience without Cryptography,” 13043:397–428. Springer Nature, 2021. https://doi.org/10.1007/978-3-030-90453-1_14.
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2021 | Conference Paper | IST-REx-ID: 10408 |
Alwen, Joel F, Benedikt Auerbach, Mirza Ahad Baig, Miguel Cueto Noval, Karen Klein, Guillermo Pascual Perez, Krzysztof Z Pietrzak, and Michael Walter. “Grafting Key Trees: Efficient Key Management for Overlapping Groups.” In 19th International Conference, 13044:222–53. Springer Nature, 2021. https://doi.org/10.1007/978-3-030-90456-2_8.
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2021 | Conference Paper | IST-REx-ID: 10409 |
Kamath Hosdurg, Chethan, Karen Klein, and Krzysztof Z Pietrzak. “On Treewidth, Separators and Yao’s Garbling.” In 19th International Conference, 13043:486–517. Springer Nature, 2021. https://doi.org/10.1007/978-3-030-90453-1_17.
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2021 | Conference Paper | IST-REx-ID: 10609 |
Chakraborty, Suvradip, Chaya Ganesh, Mahak Pancholi, and Pratik Sarkar. “Reverse Firewalls for Adaptively Secure MPC without Setup.” In 27th International Conference on the Theory and Application of Cryptology and Information Security, 13091:335–64. Springer Nature, 2021. https://doi.org/10.1007/978-3-030-92075-3_12.
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2021 | Conference Paper | IST-REx-ID: 10041 |
Kamath Hosdurg, Chethan, Karen Klein, Krzysztof Z Pietrzak, and Daniel Wichs. “Limits on the Adaptive Security of Yao’s Garbling.” In 41st Annual International Cryptology Conference, Part II , 12826:486–515. Cham: Springer Nature, 2021. https://doi.org/10.1007/978-3-030-84245-1_17.
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2021 | Conference Paper | IST-REx-ID: 10049 |
Klein, Karen, Guillermo Pascual Perez, Michael Walter, Chethan Kamath Hosdurg, Margarita Capretto, Miguel Cueto Noval, Ilia Markov, Michelle X Yeo, Joel F Alwen, and Krzysztof Z Pietrzak. “Keep the Dirt: Tainted TreeKEM, Adaptively and Actively Secure Continuous Group Key Agreement.” In 2021 IEEE Symposium on Security and Privacy , 268–84. IEEE, 2021. https://doi.org/10.1109/sp40001.2021.00035.
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2021 | Conference Paper | IST-REx-ID: 10044 |
Kamath Hosdurg, Chethan, Karen Klein, and Krzysztof Z Pietrzak. “On Treewidth, Separators and Yao’s Garbling.” In 19th Theory of Cryptography Conference 2021. International Association for Cryptologic Research, 2021.
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2021 | Thesis | IST-REx-ID: 10035 |
Klein, Karen. “On the Adaptive Security of Graph-Based Games.” Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:10035.
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2021 | Conference Paper | IST-REx-ID: 10410 |
Kamath Hosdurg, Chethan, Karen Klein, Krzysztof Z Pietrzak, and Michael Walter. “The Cost of Adaptivity in Security Games on Graphs.” In 19th International Conference, 13043:550–81. Springer Nature, 2021. https://doi.org/10.1007/978-3-030-90453-1_19.
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2021 | Conference Paper | IST-REx-ID: 10048 |
Kamath Hosdurg, Chethan, Karen Klein, Krzysztof Z Pietrzak, and Michael Walter. “The Cost of Adaptivity in Security Games on Graphs.” In 19th Theory of Cryptography Conference 2021. International Association for Cryptologic Research, 2021.
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2021 | Conference Paper | IST-REx-ID: 9969 |
Pietrzak, Krzysztof Z, Iosif Salem, Stefan Schmid, and Michelle X Yeo. “LightPIR: Privacy-Preserving Route Discovery for Payment Channel Networks.” IEEE, 2021. https://doi.org/10.23919/IFIPNetworking52078.2021.9472205.
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2020 | Conference Paper | IST-REx-ID: 8322 |
Chakraborty, Suvradip, Stefan Dziembowski, and Jesper Buus Nielsen. “Reverse Firewalls for Actively Secure MPCs.” In Advances in Cryptology – CRYPTO 2020, 12171:732–62. Springer Nature, 2020. https://doi.org/10.1007/978-3-030-56880-1_26.
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2020 | Conference Paper | IST-REx-ID: 8339 |
Genise, Nicholas, Daniele Micciancio, Chris Peikert, and Michael Walter. “Improved Discrete Gaussian and Subgaussian Analysis for Lattice Cryptography.” In 23rd IACR International Conference on the Practice and Theory of Public-Key Cryptography, 12110:623–51. Springer Nature, 2020. https://doi.org/10.1007/978-3-030-45374-9_21.
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2020 | Conference Paper | IST-REx-ID: 8987 |
Pietrzak, Krzysztof Z. “Delayed Authentication: Preventing Replay and Relay Attacks in Private Contact Tracing.” In Progress in Cryptology, 12578:3–15. LNCS. Springer Nature, 2020. https://doi.org/10.1007/978-3-030-65277-7_1.
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2020 | Conference Paper | IST-REx-ID: 7966 |
Auerbach, Benedikt, Federico Giacon, and Eike Kiltz. “Everybody’s a Target: Scalability in Public-Key Encryption.” In Advances in Cryptology – EUROCRYPT 2020, 12107:475–506. Springer Nature, 2020. https://doi.org/10.1007/978-3-030-45727-3_16.
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2020 | Thesis | IST-REx-ID: 7896 |
Kamath Hosdurg, Chethan. “On the Average-Case Hardness of Total Search Problems.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:7896.
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2019 | Journal Article | IST-REx-ID: 5887 |
Demay, Gregory, Peter Gazi, Ueli Maurer, and Bjorn Tackmann. “Per-Session Security: Password-Based Cryptography Revisited.” Journal of Computer Security. IOS Press, 2019. https://doi.org/10.3233/JCS-181131.
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2019 | Conference Paper | IST-REx-ID: 6528 |
Pietrzak, Krzysztof Z. “Simple Verifiable Delay Functions.” In 10th Innovations in Theoretical Computer Science Conference, Vol. 124. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2019. https://doi.org/10.4230/LIPICS.ITCS.2019.60.
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2019 | Book Chapter | IST-REx-ID: 6726 |
Walter, Michael. “Sampling the Integers with Low Relative Error.” In Progress in Cryptology – AFRICACRYPT 2019, edited by J Buchmann, A Nitaj, and T Rachidi, 11627:157–80. LNCS. Cham: Springer Nature, 2019. https://doi.org/10.1007/978-3-030-23696-0_9.
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2019 | Conference Paper | IST-REx-ID: 7136 |
Skórski, Maciej. “Strong Chain Rules for Min-Entropy under Few Bits Spoiled.” In 2019 IEEE International Symposium on Information Theory. IEEE, 2019. https://doi.org/10.1109/isit.2019.8849240.
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2019 | Conference Paper | IST-REx-ID: 7411 |
Abusalah, Hamza M, Chethan Kamath Hosdurg, Karen Klein, Krzysztof Z Pietrzak, and Michael Walter. “Reversible Proofs of Sequential Work.” In Advances in Cryptology – EUROCRYPT 2019, 11477:277–91. Springer International Publishing, 2019. https://doi.org/10.1007/978-3-030-17656-3_10.
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2019 | Conference Paper | IST-REx-ID: 6677 |
Choudhuri, Arka Rai, Pavel Hubáček, Chethan Kamath Hosdurg, Krzysztof Z Pietrzak, Alon Rosen, and Guy N. Rothblum. “Finding a Nash Equilibrium Is No Easier than Breaking Fiat-Shamir.” In Proceedings of the 51st Annual ACM SIGACT Symposium on Theory of Computing - STOC 2019, 1103–14. ACM Press, 2019. https://doi.org/10.1145/3313276.3316400.
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2019 | Conference Paper | IST-REx-ID: 6430 |
Fuchsbauer, Georg, Chethan Kamath Hosdurg, Karen Klein, and Krzysztof Z Pietrzak. “Adaptively Secure Proxy Re-Encryption,” 11443:317–46. Springer Nature, 2019. https://doi.org/10.1007/978-3-030-17259-6_11.
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2018 | Journal Article | IST-REx-ID: 10286 |
Allini, Elie Noumon, Maciej Skórski, Oto Petura, Florent Bernard, Marek Laban, and Viktor Fischer. “Evaluation and Monitoring of Free Running Oscillators Serving as Source of Randomness.” IACR Transactions on Cryptographic Hardware and Embedded Systems. International Association for Cryptologic Research, 2018. https://doi.org/10.13154/tches.v2018.i3.214-242.
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2018 | Conference Paper | IST-REx-ID: 7407 |
Pietrzak, Krzysztof Z. “Proofs of Catalytic Space.” In 10th Innovations in Theoretical Computer Science Conference (ITCS 2019), 124:59:1-59:25. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018. https://doi.org/10.4230/LIPICS.ITCS.2019.59.
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2018 | Thesis | IST-REx-ID: 83 |
Abusalah, Hamza M. “Proof Systems for Sustainable Decentralized Cryptocurrencies.” Institute of Science and Technology Austria, 2018. https://doi.org/10.15479/AT:ISTA:TH_1046.
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2018 | Conference Paper | IST-REx-ID: 108 |
Obremski, Marciej, and Maciej Skórski. “Inverted Leftover Hash Lemma,” Vol. 2018. IEEE, 2018. https://doi.org/10.1109/ISIT.2018.8437654.
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2018 | Journal Article | IST-REx-ID: 107 |
Dziembowski, Stefan, Krzysztof Z Pietrzak, and Daniel Wichs. “Non-Malleable Codes.” Journal of the ACM. ACM, 2018. https://doi.org/10.1145/3178432.
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2018 | Conference Paper | IST-REx-ID: 193 |
Alwen, Joel F, Peter Gazi, Chethan Kamath Hosdurg, Karen Klein, Georg F Osang, Krzysztof Z Pietrzak, Lenoid Reyzin, Michal Rolinek, and Michal Rybar. “On the Memory Hardness of Data Independent Password Hashing Functions.” In Proceedings of the 2018 on Asia Conference on Computer and Communication Security, 51–65. ACM, 2018. https://doi.org/10.1145/3196494.3196534.
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2018 | Conference Paper | IST-REx-ID: 300 |
Micciancio, Daniele, and Michael Walter. “On the Bit Security of Cryptographic Primitives,” 10820:3–28. Springer, 2018. https://doi.org/10.1007/978-3-319-78381-9_1.
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2018 | Conference Paper | IST-REx-ID: 302 |
Cohen, Bram, and Krzysztof Z Pietrzak. “Simple Proofs of Sequential Work,” 10821:451–67. Springer, 2018. https://doi.org/10.1007/978-3-319-78375-8_15.
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2018 | Conference Paper | IST-REx-ID: 298 |
Alwen, Joel F, Jeremiah Blocki, and Krzysztof Z Pietrzak. “Sustained Space Complexity,” 10821:99–130. Springer, 2018. https://doi.org/10.1007/978-3-319-78375-8_4.
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| arXiv
2018 | Journal Article | IST-REx-ID: 5980
Chatterjee, Sanjit, Chethan Kamath Hosdurg, and Vikas Kumar. “Private Set-Intersection with Common Set-Up.” American Institute of Mathematical Sciences. AIMS, 2018. https://doi.org/10.3934/amc.2018002.
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2018 | Conference Paper | IST-REx-ID: 6941 |
Park, Sunoo, Albert Kwon, Georg Fuchsbauer, Peter Gazi, Joel F Alwen, and Krzysztof Z Pietrzak. “SpaceMint: A Cryptocurrency Based on Proofs of Space.” In 22nd International Conference on Financial Cryptography and Data Security, 10957:480–99. Springer Nature, 2018. https://doi.org/10.1007/978-3-662-58387-6_26.
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2017 | Conference Paper | IST-REx-ID: 1175 |
Alwen, Joel F, Susanna De Rezende, Jakob Nordstrom, and Marc Vinyals. “Cumulative Space in Black-White Pebbling and Resolution.” edited by Christos Papadimitriou, 67:38:1-38-21. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.ITCS.2017.38.
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2017 | Conference Paper | IST-REx-ID: 605 |
Brody, Joshua, Stefan Dziembowski, Sebastian Faust, and Krzysztof Z Pietrzak. “Position Based Cryptography and Multiparty Communication Complexity.” edited by Yael Kalai and Leonid Reyzin, 10677:56–81. Springer, 2017. https://doi.org/10.1007/978-3-319-70500-2_3.
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2017 | Conference Paper | IST-REx-ID: 609 |
Alwen, Joel F, and Björn Tackmann. “Moderately Hard Functions: Definition, Instantiations, and Applications.” edited by Yael Kalai and Leonid Reyzin, 10677:493–526. Springer, 2017. https://doi.org/10.1007/978-3-319-70500-2_17.
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2017 | Conference Paper | IST-REx-ID: 635 |
Alwen, Joel F, Binchi Chen, Krzysztof Z Pietrzak, Leonid Reyzin, and Stefano Tessaro. “Scrypt Is Maximally Memory Hard.” edited by Jean-Sébastien Coron and Jesper Buus Nielsen, 10212:33–62. Springer, 2017. https://doi.org/10.1007/978-3-319-56617-7_2.
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2017 | Conference Paper | IST-REx-ID: 640 |
Alwen, Joel F, Jeremiah Blocki, and Krzysztof Z Pietrzak. “Depth-Robust Graphs and Their Cumulative Memory Complexity.” edited by Jean-Sébastien Coron and Jesper Buus Nielsen, 10212:3–32. Springer, 2017. https://doi.org/10.1007/978-3-319-56617-7_1.
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2017 | Conference Paper | IST-REx-ID: 648 |
Skórski, Maciej. “On the Complexity of Breaking Pseudoentropy.” edited by Gerhard Jäger and Silvia Steila, 10185:600–613. Springer, 2017. https://doi.org/10.1007/978-3-319-55911-7_43.
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2017 | Conference Paper | IST-REx-ID: 650 |
Skórski, Maciej. “A Cryptographic View of Regularity Lemmas: Simpler Unified Proofs and Refined Bounds.” edited by Gerhard Jäger and Silvia Steila, 10185:586–99. Springer, 2017. https://doi.org/10.1007/978-3-319-55911-7_42.
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2017 | Conference Paper | IST-REx-ID: 6527 |
Alwen, Joel F, Jeremiah Blocki, and Ben Harsha. “Practical Graphs for Optimal Side-Channel Resistant Memory-Hard Functions.” In Proceedings of the 2017 ACM SIGSAC Conference on Computer and Communications Security, 1001–17. ACM Press, 2017. https://doi.org/10.1145/3133956.3134031.
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2017 | Conference Paper | IST-REx-ID: 6526 |
Skórski, Maciej. “On the Complexity of Estimating Rènyi Divergences.” In 2017 IEEE International Symposium on Information Theory (ISIT). IEEE, 2017. https://doi.org/10.1109/isit.2017.8006529.
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2017 | Conference Paper | IST-REx-ID: 697 |
Pietrzak, Krzysztof Z, and Maciej Skórski. “Non Uniform Attacks against Pseudoentropy,” Vol. 80. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.ICALP.2017.39.
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2017 | Conference Paper | IST-REx-ID: 710 |
Obremski, Maciej, and Maciej Skórski. “Renyi Entropy Estimation Revisited,” Vol. 81. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.APPROX-RANDOM.2017.20.
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2017 | Thesis | IST-REx-ID: 838 |
Rybar, Michal. “(The Exact Security of) Message Authentication Codes.” Institute of Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:th_828.
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2017 | Journal Article | IST-REx-ID: 6196 |
Gazi, Peter, Krzysztof Z Pietrzak, and Michal Rybar. “The Exact Security of PMAC.” IACR Transactions on Symmetric Cryptology. Ruhr University Bochum, 2017. https://doi.org/10.13154/TOSC.V2016.I2.145-161.
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2017 | Conference Paper | IST-REx-ID: 559 |
Abusalah, Hamza M, Joel F Alwen, Bram Cohen, Danylo Khilko, Krzysztof Z Pietrzak, and Leonid Reyzin. “Beyond Hellman’s Time-Memory Trade-Offs with Applications to Proofs of Space,” 10625:357–79. Springer, 2017. https://doi.org/10.1007/978-3-319-70697-9_13.
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2017 | Conference Paper | IST-REx-ID: 637 |
Jafargholi, Zahra, Chethan Kamath Hosdurg, Karen Klein, Ilan Komargodski, Krzysztof Z Pietrzak, and Daniel Wichs. “Be Adaptive Avoid Overcommitting.” edited by Jonathan Katz and Hovav Shacham, 10401:133–63. Springer, 2017. https://doi.org/10.1007/978-3-319-63688-7_5.
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2017 | Conference Paper | IST-REx-ID: 1174 |
Skórski, Maciej. “Lower Bounds on Key Derivation for Square-Friendly Applications,” Vol. 66. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.STACS.2017.57.
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