Description
Leader of the group Cryptology: Ronald Cramer.
News
Cryptographic security at the speed of light
When people who distrust each other want to securely cooperate, they can use cryptographic 'commitment schemes'. Max Fillinger (CWI) designed and analyzed relativistic commitment schemes. He defends his PhD thesis 'Bit-Commitments: Classical, Quantum and Non-Signaling' on 19 March.
Renowned scientists and policy advisors speak at CWI Lectures on Privacy and Security
Our privacy, a fundamental right, is threatened by surveillance and smart algorithms. Can our privacy be salvaged from 'intelligent' machines? During the CWI Lectures 2018 four renowned scientists and policy advisors discuss the state of the art in protecting privacy. Keynote speakers: Marc Rotenberg (USA), Jan Camenisch (Switzerland), Adam Smith (USA) and Ed Felten (USA), former advisor of Barack Obama.
Serge Fehr appointed as Professor Quantum Information Theory
Serge Fehr (CWI, UL) has been appointed as Professor Quantum Information Theory at the Leiden Mathematical Institute (MI) since 1 June 2018. His research is focused on quantum cryptology.
How to share sensitive information safely?
“Data protection is now in the news more often than ever before”, Thijs Veugen, a senior researcher at TNO and part-time seconded in CWI’s Cryptology group says in his recent TNO Time column. “What should a company do if it wants to share information?" "Organizations can use secure multi-party computation to securely link the most sensitive databases together.”
Members
Associated Members
Publications
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Fillinger, M.J. (2019, March 19). Two-prover bit-commitments: classical, quantum and non-signaling.
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Albrecht, M, Ducas, L, Herold, G, Kirshanova, E, Postlethwaite, E.W, & Stevens, M.M.J. (2019). The General Sieve Kernel and New Records in Lattice Reduction.
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Guruswami, V, Xing, C, & Yuan, C. (2018). How long can optimal locally repairable codes be?. In Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques (APPROX/RANDOM 2018) (pp. 41:1–41:11). doi:10.4230/LIPIcs.APPROX-RANDOM.2018.41
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Cascudo, I, Cramer, R.J.F, Xing, C, & Yuan, C. (2018). Amortized complexity of information-theoretically secure MPC revisited. In Advances in Cryptology - CRYPTO 2018 (pp. 395–426). doi:10.1007/978-3-319-96878-0_14
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Luo, Y, Xing, C, & Yuan, C. (2018). Optimal locally repairable codes of distance 3 and 4 via cyclic codes. IEEE Transactions on Information Theory. doi:10.1109/TIT.2018.2854717
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Landerreche, E, & Stevens, M.M.J. (2018). On Immutability of Blockchains. In Reports of the European Society for Socially Embedded Technologies (Vol. 2). doi:10.18420/blockchain2018_04
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Fehr, S, Karpman, P, & Mennink, B.J.M. (2018). Short non-malleable codes from related-key secure block ciphers. In IACR Transactions on Symmetric Cryptology (pp. 336–352). doi:10.13154/tosc.v2018.i1.336-352
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Xiao, D, & Yu, Y. (2018). Klepto for Ring-LWE encryption. Computer Journal, 61(8), 1228–1239.
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Fehr, S. (2018). Classical Proofs for the Quantum Collapsing Property of Classical Hash Functions. In Theory of Cryptography Conference - TCC2018 (pp. 315–338).
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Xiao, D, Yu, Y, & Bi, J. (2018). A new discrete gaussian sampler over orthogonal lattices. IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences, (11), 1880–1887.
Software
NewHope: Fast implementation of a quantum-resistant key exchange
NewHope is the reference implementation of a quantum-resistant key exchange protocol.
Counter-Cryptanalysis: detecting forged digital MD5, SHA-1 signatures
The Counter-Cryptanalysis project provides a drop-in replacement for the existing cryptographic hash functions MD5 and SHA-1.
HashClash: A framework for studying the weaknesses of MD5 and SHA-1
HashClash is a software framework for cryptanalysis of the MD5 and SHA-1 cryptographic hash functions, and for Chosen-Prefix Collisions for MD5.
Current projects with external funding
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Cryptanalysis of Lattice-based Cryptography ()
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Samenwerkingsovereenkomst met TNO vwb promotieonderzoek Thomas Attema
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Secure scalable policy-enforced distributed data processing
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Advies inzake post-quantum cryptografie (impact quantum computing op beveiligingswaarde huidige cryptografische technieken) (Advies inzake post-quantum cryptografie)
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Algebraic Methods for Stronger Crypto (ALGSTRONGCRYPTO)
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PRivacy preserving pOst-quantuM systEms from advanced crypTograpHic mEchanisms Using latticeS (PROMETHEUS)
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Scalable Oblivious Data Analytics (SODA)
Related partners
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ABN AMRO Bank
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IBM
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ING Bank
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KLM
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Orange SA
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Philips
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Royal Holloway & Bedford New College, University of London
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Ruhr-Universität Bochum, Germany
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Scytl Secure Electronic Voting SA
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Thales
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Université de Rennes
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Weizmann Institute
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Ecole Normale Superieure
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TNO
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Universidad Politecnica Catalunya
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Universiteit van Amsterdam
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Vrije Universiteit Amsterdam