K
Krzysztof Pietrzak
Researcher at Institute of Science and Technology Austria
Publications - 159
Citations - 6715
Krzysztof Pietrzak is an academic researcher from Institute of Science and Technology Austria. The author has contributed to research in topics: Hash function & Encryption. The author has an hindex of 41, co-authored 151 publications receiving 6092 citations. Previous affiliations of Krzysztof Pietrzak include École Normale Supérieure & New York University.
Papers
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Proceedings ArticleDOI
Leakage-Resilient Cryptography
TL;DR: In this article, a stream-cipher S whose implementation is secure even if a bounded amount of arbitrary (adversarially chosen) information on the internal state ofS is leaked during computation is presented.
Book ChapterDOI
A New Randomness Extraction Paradigm for Hybrid Encryption
TL;DR: In this article, the authors presented a new approach to the design of IND-CCA2 secure hybrid encryption schemes in the standard model, which can be instantiated with efficient schemes based on standard intractability assumptions such as Decisional Diffie-Hellman, Quadratic Residuosity, and Paillier's decisional composite residual.
Posted Content
A New Randomness Extraction Paradigm for Hybrid Encryption.
TL;DR: This framework provides an efficient generic transformation from 1-universal to 2-universal hash proof systems and allows to prove IND-CCA2 security of a hybrid version of 1991's Damgard's ElGamal public-key encryption scheme under the DDH assumption.
Book ChapterDOI
Proofs of Space
TL;DR: Proofs of work (PoW) have been suggested by Dwork and Naor as protection to a shared resource and used to prevent double spending in the Bitcoin digital currency system.
Book ChapterDOI
A Leakage-Resilient Mode of Operation
TL;DR: It is shown that unlike "normal" PRFs, wPRFs are seed-incompressible, in the sense that the output of a wPRF is pseudorandom even if a bounded amount of information about the key is leaked.