{ "meta": { "api_type": "NWO Projects API", "version": "1.0.2", "licence": { "name": "CC0 1.0 Universal", "url": "https://creativecommons.org/publicdomain/zero/1.0", "description": "To the extent possible under law, all copyright and related or neighbouring rights have been waived worldwide to the data made available through this API." }, "documentation": "https://doi.org/10.5281/zenodo.14918287", "release_date": "2025-08-20T00:00:00", "funder": "https://doi.org/10.13039/501100003246", "ror_id": "https://ror.org/04jsz6e67", "date": "2026-11-03T00:00:00", "count": 1, "per_page": 100, "pages": 1, "page": 1 }, "projects": [ { "project_id": "639.022.519", "title": "Cryptography in the Quantum Age", "funding_scheme_id": 817, "funding_scheme": "NWO-Talentprogramma Vidi 2014 EW", "department": "Exacte en Natuurwetenschappen", "sub_department": "Exacte Wetenschappen", "start_date": "2015-11-01T00:00:00", "end_date": "2021-10-31T00:00:00", "reporting_year": 2015, "summary_nl": "Quantum cryptography can provide security. Its best-known achievement is Quantum Key Distribution (QKD) which allows the generation of cryptographic keys based on the laws of quantum mechanics. However, modern cryptography studies a broad variety of other scenarios such as identification, secure collaboration, electronic voting, etc. that go far beyond the task of key distribution. For all these tasks, most of the classical protocols used today become insecure once an adversary is in possession of a quantum computer. Even worse, not much is currently known about possible options to replace these protocols with secure variants. On the other hand, quantum effects can also be used by honest parties to obtain more secure protocols. This project studies this two-edged sword. \n\nMy project consists of two workpackages: 1. As PhD project, I propose to investigate the field of position-based quantum cryptography. In standard cryptography, a password or digital key is used to identify a player. The goal of position-based cryptography is to use the geographical position as a cryptographic credential. The combination of relativistic constraints (assuring that information cannot travel faster than the speed of light) and quantum mechanical effects (such as the impossibility to perfectly copy a quantum state) enables entirely new cryptographic applications like sending a message in such a way that it can only be read at a particular geographic position. 2. Together with a postdoc, I will work on systematically developing a quantum-cryptographic toolbox that can be used to prove the security of quantum protocols for more demanding tasks than key distribution.\n\nTaken as a whole, this project will make cryptography ready for the quantum age and improve the privacy of individuals, companies and public administration. My research expertise in both the fields of classical cryptography and quantum information theory give me the right profile to undertake such an exploration.\n", "summary_en": "Quantum cryptography can provide security. Its best-known achievement is Quantum Key Distribution (QKD) which allows the generation of cryptographic keys based on the laws of quantum mechanics. However, modern cryptography studies a broad variety of other scenarios such as identification, secure collaboration, electronic voting, etc. that go far beyond the task of key distribution. For all these tasks, most of the classical protocols used today become insecure once an adversary is in possession of a quantum computer. Even worse, not much is currently known about possible options to replace these protocols with secure variants. On the other hand, quantum effects can also be used by honest parties to obtain more secure protocols. This project studies this two-edged sword. \n\nMy project consists of two workpackages: 1. As PhD project, I propose to investigate the field of position-based quantum cryptography. In standard cryptography, a password or digital key is used to identify a player. The goal of position-based cryptography is to use the geographical position as a cryptographic credential. The combination of relativistic constraints (assuring that information cannot travel faster than the speed of light) and quantum mechanical effects (such as the impossibility to perfectly copy a quantum state) enables entirely new cryptographic applications like sending a message in such a way that it can only be read at a particular geographic position. 2. Together with a postdoc, I will work on systematically developing a quantum-cryptographic toolbox that can be used to prove the security of quantum protocols for more demanding tasks than key distribution.\n\nTaken as a whole, this project will make cryptography ready for the quantum age and improve the privacy of individuals, companies and public administration. My research expertise in both the fields of classical cryptography and quantum information theory give me the right profile to undertake such an exploration.\n", "summary_updates": [ { "submission_date": "2022-08-23T13:51:16", "update_en": "The VIDI project has been successfully completed and achieved its main objective, namely, to exploit quantum mechanics to invent new cryptographic schemes, and to deepen our understanding of the possibilities that the quantum age offers us with respect to cryptography. The project was carried out by the PI, one PhD student and two postdocs. Its main output were 20 scientific research articles that appeared in journal and conferences.", "update_nl": "Het VIDI-project is met succes afgerond en heeft zijn hoofddoel bereikt, namelijk de kwantummechanica te gebruiken om nieuwe cryptografische systemen uit te vinden, en ons inzicht te verdiepen in de mogelijkheden die het kwantumtijdperk ons biedt met betrekking tot cryptografie. Het project werd uitgevoerd door de hoofdonderzoeker, een promovendus en twee postdocs. De belangrijkste resultaten waren 20 wetenschappelijke onderzoeksartikelen die verschenen in tijdschriften en op conferenties." } ], "project_members": [ { "role": "Researcher", "member_id": 339055, "last_name": "Czajkowski", "degree_post_nominal": "MSc", "initials": "J.M.", "first_name": "Jan", "organisation": "Universiteit van Amsterdam||Faculteit der Natuurwetenschappen, Wiskunde en Informatica (Faculty of Science)||Institute for Logic, Language and Computation (ILLC)", "organisation_id": 57871, "ror": "https://ror.org/04dkp9463", "active": false }, { "role": "Researcher", "member_id": 404214, "last_name": "Majenz", "degree_pre_nominal": "dr.", "initials": "C.", "first_name": "Christian", "organisation": "Universiteit van Amsterdam||Faculteit der Natuurwetenschappen, Wiskunde en Informatica (Faculty of Science)||Institute for Logic, Language and Computation (ILLC)", "organisation_id": 57871, "ror": "https://ror.org/04dkp9463", "active": false }, { "role": "Project leader", "member_id": 169141, "last_name": "Schaffner", "degree_pre_nominal": "dr.", "initials": "C.", "first_name": "Christian", "organisation": "Universiteit van Amsterdam||Faculteit der Natuurwetenschappen, Wiskunde en Informatica (Faculty of Science)||Institute for Logic, Language and Computation (ILLC)", "organisation_id": 57871, "ror": "https://ror.org/04dkp9463", "active": false }, { "role": "Researcher", "member_id": 169141, "last_name": "Schaffner", "degree_pre_nominal": "dr.", "initials": "C.", "first_name": "Christian", "organisation": "Universiteit van Amsterdam||Faculteit der Natuurwetenschappen, Wiskunde en Informatica (Faculty of Science)||Institute for Logic, Language and Computation (ILLC)", "organisation_id": 57871, "ror": "https://ror.org/04dkp9463", "active": false }, { "role": "Researcher", "member_id": 516599, "last_name": "Tahmasbi", "initials": "M.", "first_name": "Mehrdad", "organisation": "Universiteit van Amsterdam||Faculteit der Natuurwetenschappen, Wiskunde en Informatica (Faculty of Science)||Institute for Logic, Language and Computation (ILLC)", "organisation_id": 57871, "ror": "https://ror.org/04dkp9463", "active": false }, { "role": "Main Applicant", "member_id": 169141, "last_name": "Schaffner", "degree_pre_nominal": "dr.", "initials": "C.", "first_name": "Christian", "organisation": "Universiteit van Amsterdam||Faculteit der Natuurwetenschappen, Wiskunde en Informatica (Faculty of Science)||Institute for Logic, Language and Computation (ILLC)", "organisation_id": 57871, "ror": "https://ror.org/04dkp9463", "active": true } ], "products": [ { "title": "Computational Security of Quantum Encryption", "year": 2016, "edition": "2016", "start": 47, "end": 71, "type": "Productbijdrage", "url_open_access": "https://arxiv.org/abs/1602.01441", "journal_title": "Proceedings of Information Theoretic Security, LNCS 10015", "authors": [ { "last_name": "Broadbent", "initials": "A", "role": "Auteur" }, { "last_name": "Nascimento", "initials": "A", "role": "Editor" }, { "last_name": "Fefferman", "initials": "B", "role": "Auteur" }, { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Alagic", "initials": "G", "role": "Auteur" }, { "last_name": "St. Jules", "initials": "M", "role": "Auteur" }, { "last_name": "Barreto", "initials": "P", "role": "Editor" }, { "last_name": "Gagliardoni", "initials": "T", "role": "Auteur" } ] }, { "title": "Quantum Cryptography Beyond Quantum Key Distribution", "year": 2016, "edition": "1", "start": 351, "end": 382, "type": "Wetenschappelijk artikel", "url_open_access": "http://link.springer.com/article/10.1007%2Fs10623-015-0157-4", "journal_title": "Designs, Codes and Cryptography", "authors": [ { "last_name": "Broadbent", "initials": "A", "role": "Auteur" }, { "last_name": "Schaffner", "initials": "C", "role": "Auteur" } ] }, { "title": "Post-quantum security of the sponge construction", "year": 2018, "start": 185, "end": 204, "type": "Productbijdrage", "url_open_access": "https://link.springer.com/chapter/10.1007%2F978-3-319-79063-3_9\n\nhttps://eprint.iacr.org/2017/771", "journal_title": "PQCrypto 2018, LNCS vol 10786", "authors": [ { "last_name": "Huelsing", "initials": "A", "role": "Auteur" }, { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Unruh", "initials": "D", "role": "Auteur" }, { "last_name": "Czajkwoski", "initials": "J", "role": "Auteur" }, { "last_name": "Bruiderink", "initials": "LG", "role": "Auteur" } ] }, { "title": "Semantic Security and Indistinguishability in the Quantum World", "year": 2016, "edition": "9816", "start": 60, "end": 89, "type": "Productbijdrage", "url_open_access": "https://link.springer.com/chapter/10.1007%2F978-3-662-53015-3_3\n\nhttps://arxiv.org/abs/1504.05255", "journal_title": "CRYPTO 2016, LNCS", "authors": [ { "last_name": "Huelsing", "initials": "A", "role": "Auteur" }, { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Gagliardoni", "initials": "T", "role": "Auteur" } ] }, { "title": "Unforgeable Quantum Encryption", "year": 2018, "edition": "10822", "start": 489, "end": 519, "type": "Wetenschappelijk artikel", "url_open_access": "https://eprint.iacr.org/2017/960\n\nhttps://link.springer.com/chapter/10.1007/978-3-319-78372-7_16", "journal_title": "EUROCRYPT 2018, LNCS vol 10822", "authors": [ { "last_name": "Majenz", "initials": "C", "role": "Auteur" }, { "last_name": "Alagic", "initials": "G", "role": "Auteur" }, { "last_name": "Gagliardoni", "initials": "T", "role": "Auteur" } ] }, { "title": "Continuous-variable protocol for oblivious transfer in the noisy-storage model", "year": 2018, "edition": "9", "start": 1450, "end": 1450, "type": "Wetenschappelijk artikel", "url_open_access": "https://www.nature.com/articles/s41467-018-03729-4", "journal_title": "Nature Communicationsvolume 9", "authors": [ { "last_name": "Pacher", "initials": "C", "role": "Auteur" }, { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Furrer", "initials": "F", "role": "Auteur" }, { "last_name": "Schnabel", "initials": "R", "role": "Auteur" }, { "last_name": "Wehner", "initials": "S", "role": "Auteur" }, { "last_name": "Gehring", "initials": "T", "role": "Auteur" } ] }, { "title": "A Concrete Treatment of Fiat-Shamir Signatures in the Quantum Random-Oracle Model", "year": 2018, "start": 552, "end": 586, "type": "Productbijdrage", "url_open_access": "https://eprint.iacr.org/2017/916\n\nhttps://link.springer.com/chapter/10.1007/978-3-319-78372-7_18", "journal_title": "EUROCRYPT 2018, LNCS, vol 10822", "authors": [ { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Kiltz", "initials": "E", "role": "Auteur" }, { "last_name": "Lyubashevsky", "initials": "V", "role": "Auteur" } ] }, { "title": "Quantum Fully Homomorphic Encryption with Verification", "year": 2017, "edition": "23", "start": 438, "end": 467, "type": "Productbijdrage", "url_open_access": "10.1007/978-3-319-70694-8_16", "journal_title": "LNCS", "authors": [ { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Speelman", "initials": "F", "role": "Auteur" }, { "last_name": "Alagic", "initials": "G", "role": "Auteur" }, { "last_name": "Dulek", "initials": "Y", "role": "Auteur" } ] }, { "title": "Quantum Homomorphic Encryption for Polynomial-Size Circuits", "year": 2018, "edition": "14", "start": 1, "end": 45, "type": "Wetenschappelijk artikel", "url_open_access": "http://dx.doi.org/10.4086/toc.2018.v014a007", "journal_title": "Theory of Computing", "authors": [ { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Speelman", "initials": "F", "role": "Auteur" }, { "last_name": "Dulek", "initials": "Y", "role": "Auteur" } ] }, { "title": "Quantum homomorphic encryption for polynomial-sized circuits", "year": 2016, "edition": "3", "start": 3, "end": 32, "type": "Productbijdrage", "url_open_access": "http://dx.doi.org/10.1007/978-3-662-53015-3_1\n\nhttp://arxiv.org/abs/1603.09717", "journal_title": "CRYPTO 2016, LNCS", "authors": [ { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Speelman", "initials": "F", "role": "Auteur" }, { "last_name": "Dulek", "initials": "Y", "role": "Auteur" } ] }, { "title": "USING SIMON’S ALGORITHM TO ATTACK SYMMETRIC-KEY CRYPTOGRAPHIC PRIMITIVES", "year": 2017, "edition": "17", "start": 65, "end": 78, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.26421/QIC17.1-2\n\nhttps://arxiv.org/abs/1603.07856", "journal_title": "Quantum Information and Computation", "authors": [ { "last_name": "Schaffner", "initials": "C", "role": "Auteur" }, { "last_name": "Santoli", "initials": "T", "role": "Auteur" } ] }, { "title": "Adaptive Quantum Metrology under General Markovian Noise", "year": 2017, "edition": "4", "start": 41009, "end": 41009, "type": "Wetenschappelijk artikel", "url_open_access": "https://journals.aps.org/prx/abstract/10.1103/PhysRevX.7.041009", "journal_title": "Physical Review X, Vol. 7", "authors": [ { "last_name": "Czajkowski", "initials": "J", "role": "Auteur" }, { "last_name": "Sekatski", "initials": "P", "role": "Auteur" }, { "last_name": "Demkowicz-Dobrzański", "initials": "R", "role": "Auteur" } ] } ] } ] }