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Research
Cryptography

Cryptography provides the fundamental building blocks such as encryptions and signatures, that are at the basis of any secure and privacy-preserving system.

PEOPLE
Elena Andreeva
Elena Andreeva
Professor (TU Wien) ↗
Georg Fuchsbauer
Georg Fuchsbauer
Professor (TU Wien) ↗
Krzysztof Pietrzak
Krzysztof Pietrzak
Professor (IST Austria) ↗
PUBLICATIONS

Compactness of Hashing Modes and Efficiency Beyond Merkle Tree. Elena Andreeva, Rishiraj Bhattacharyya, Arnab Roy (EUROCRYPT)
Compactness of Hashing Modes and Efficiency beyond Merkle Tree. Elena Andreeva, Rishiraj Bhattacharyya, Arnab Roy (eprint)
Compactness of Hashing Modes and Efficiency beyond Merkle Tree. Elena Andreeva, Rishiraj Bhattacharyya, Arnab Roy (eprint)
Interpolation Cryptanalysis of Unbalanced Feistel Networks with Low Degree Round Functions. Arnab Roy, Elena Andreeva, Jan Ferdinand Sauer (eprint)
Inverse-Sybil Attacks in Automated Contact Tracing. Benedikt Auerbach, Suvradip Chakraborty, Karen Klein, Guillermo Pascual-Perez, Krzysztof Pietrzak, Michael Walter, Michelle Yeo (CT-RSA)
LightPIR - Privacy-Preserving Route Discovery for Payment Channel Networks. Krzysztof Pietrzak, Iosif Salem, Stefan Schmid, Michelle Yeo (eprint)
On the Cost of Adaptivity in Graph-Based Games. Chethan Kamath, Karen Klein, Krzysztof Pietrzak, Michael Walter (eprint)
RUP Security of the SAEF Authenticated Encryption mode. Elena Andreeva, Amit Singh Bhati, Damian Vizár (eprint)
Transferable E-Cash - A Cleaner Model and the First Practical Instantiation. Balthazar Bauer, Georg Fuchsbauer, Chen Qian (Public Key Cryptography)
A Classification of Computational Assumptions in the Algebraic Group Model. Balthazar Bauer, Georg Fuchsbauer, Julian Loss (CRYPTO)
A Classification of Computational Assumptions in the Algebraic Group Model. Balthazar Bauer, Georg Fuchsbauer, Julian Loss (eprint)
Blind Schnorr Signatures and Signed ElGamal Encryption in the Algebraic Group Model. Georg Fuchsbauer, Antoine Plouviez, Yannick Seurin (EUROCRYPT)
Delayed Authentication - Preventing Replay and Relay Attacks in Private Contact Tracing. Krzysztof Pietrzak (INDOCRYPT)
Delayed Authentication - Preventing Replay and Relay Attacks in Private Contact Tracing. Krzysztof Pietrzak (eprint)
Double-Authentication-Preventing Signatures in the Standard Model. Dario Catalano, Georg Fuchsbauer, Azam Soleimanian (SCN)
Double-Authentication-Preventing Signatures in the Standard Model. Dario Catalano, Georg Fuchsbauer, Azam Soleimanian (eprint)
Efficient Signatures on Randomizable Ciphertexts. Balthazar Bauer, Georg Fuchsbauer (SCN)
Efficient Signatures on Randomizable Ciphertexts. Balthazar Bauer, Georg Fuchsbauer (eprint)
Nonce-Misuse Security of the SAEF Authenticated Encryption mode. Elena Andreeva, Amit Singh Bhati, Damian Vizár (eprint)
Optimized Software Implementations for the Lightweight Encryption Scheme ForkAE. Arne Deprez, Elena Andreeva, Jose Maria Bermudo Mera, Angshuman Karmakar, Antoon Purnal (CARDIS)
Optimized Software Implementations for theLightweight Encryption Scheme ForkAE. Arne Deprez, Elena Andreeva, Jose Maria Bermudo Mera, Angshuman Karmakar, Antoon Purnal (eprint)
Simpler Constructions of Asymmetric Primitives from Obfuscation. Pooya Farshim, Georg Fuchsbauer, Alain Passelègue (INDOCRYPT)
Transferable E-cash - A Cleaner Model and the First Practical Instantiation. Balthazar Bauer, Georg Fuchsbauer, Chen Qian (eprint)
Adaptively Secure Proxy Re-encryption. Georg Fuchsbauer, Chethan Kamath, Karen Klein, Krzysztof Pietrzak (Public Key Cryptography)
Aggregate Cash Systems - A Cryptographic Investigation of Mimblewimble. Georg Fuchsbauer, Michele Orrù, Yannick Seurin (EUROCRYPT)
Anonymous Multi-Hop Locks for Blockchain Scalability and Interoperability. Giulio Malavolta, Pedro Moreno-Sanchez, Clara Schneidewind, Aniket Kate, Matteo Maffei (NDSS)
Blind Schnorr Signatures in the Algebraic Group Model. Georg Fuchsbauer, Antoine Plouviez, Yannick Seurin (eprint)
Finding a Nash Equilibrium Is No Easier Than Breaking Fiat-Shamir. Arka Rai Choudhuri, Pavel Hubácek, Chethan Kamath, Krzysztof Pietrzak, Alon Rosen, Guy N. Rothblum (Electron. Colloquium Comput. Complex.)
Finding a Nash Equilibrium Is No Easier Than Breaking Fiat-Shamir. Arka Rai Choudhuri, Pavel Hubácek, Chethan Kamath, Krzysztof Pietrzak, Alon Rosen, Guy N. Rothblum (eprint)
Finding a Nash equilibrium is no easier than breaking Fiat-Shamir. Arka Rai Choudhuri, Pavel Hubácek, Chethan Kamath, Krzysztof Pietrzak, Alon Rosen, Guy N. Rothblum (STOC)
Forkcipher - A New Primitive for Authenticated Encryption of Very Short Messages. Elena Andreeva, Virginie Lallemand, Antoon Purnal, Reza Reyhanitabar, Arnab Roy, Damian Vizár (ASIACRYPT)
Forkcipher - a New Primitive for Authenticated Encryption of Very Short Messages. Elena Andreeva, Virginie Lallemand, Antoon Purnal, Reza Reyhanitabar, Arnab Roy, Damian Vizár (eprint)
Group ORAM for privacy and access control in outsourced personal records. Matteo Maffei, Giulio Malavolta, Manuel Reinert, Dominique Schröder (J. Comput. Secur.)
Keep the Dirt - Tainted TreeKEM, an Efficient and Provably Secure Continuous Group Key Agreement Protocol. Joël Alwen, Margarita Capretto, Miguel Cueto, Chethan Kamath, Karen Klein, Guillermo Pascual-Perez, Krzysztof Pietrzak, Michael Walter (eprint)
PPAD-Hardness via Iterated Squaring Modulo a Composite. Arka Rai Choudhuri, Pavel Hubácek, Chethan Kamath, Krzysztof Pietrzak, Alon Rosen, Guy N. Rothblum (eprint)
Proofs of Catalytic Space. Krzysztof Pietrzak (ITCS)
Reversible Proofs of Sequential Work. Hamza Abusalah, Chethan Kamath, Karen Klein, Krzysztof Pietrzak, Michael Walter (EUROCRYPT)
Reversible Proofs of Sequential Work. Hamza Abusalah, Chethan Kamath, Karen Klein, Krzysztof Pietrzak, Michael Walter (eprint)
Security of Symmetric Primitives against Key-Correlated Attacks. Aisling Connolly, Pooya Farshim, Georg Fuchsbauer (IACR Trans. Symmetric Cryptol.)
Security of Symmetric Primitives against Key-Correlated Attacks. Aisling Connolly, Pooya Farshim, Georg Fuchsbauer (eprint)
Simple Verifiable Delay Functions. Krzysztof Pietrzak (ITCS)
Structure-Preserving Signatures on Equivalence Classes and Constant-Size Anonymous Credentials. Georg Fuchsbauer, Christian Hanser, Daniel Slamanig (J. Cryptol.)
WI Is Not Enough - Zero-Knowledge Contingent (Service) Payments Revisited. Georg Fuchsbauer (CCS)
WI Is Not Enough - Zero-Knowledge Contingent (Service) Payments Revisited. Georg Fuchsbauer (eprint)
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