Advances in Cryptology - EUROCRYPT 2021

The 3-volume-set LNCS 12696 - 12698 constitutes the refereed proceedings of the 40th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Eurocrypt 2021, which was held in Zagreb, Croatia, during October 17-21, 2021.The 78 full papers included in these proceedings were accepted from a total of 400 submissions. They were organized in topical sections as follows:

Part I: Best papers; public-key cryptography; isogenies; post-quantum cryptography; lattices; homomorphic encryption; symmetric cryptanalysis;

Part II: Symmetric designs; real-world cryptanalysis; implementation issues; masking and secret-sharing; leakage, faults and tampering; quantum constructions and proofs; multiparty computation;

Part III: Garbled circuits; indistinguishability obfuscation; non-malleable commitments; zero-knowledge proofs; property-preserving hash functions and ORAM; blockchain; privacy and law enforcement.

Contenu

Garbled Circuits.- LogStack: Stacked Garbling with O(b log b) Computation.- Large Scale, Actively Secure Computation from LPN and Free-XOR Garbled Circuits.- Threshold Garbled Circuits and Ad Hoc Secure Computation.- Indistinguishability Obfuscation.- Indistinguishability Obfuscation from Simple-to-State Hard Problems: New Assumptions, New Techniques, and Simplification.- Candidate Obfuscation via Oblivious LWE Sampling.- Non-Malleable Commitments.- Black-Box Non-Interactive Non-Malleable Commitments.- Non-interactive Distributional Indistinguishability (NIDI) and Non-Malleable Commitments.- Zero-Knowledge Proofs.- Public-Coin Statistical Zero-Knowledge Batch Verification against Malicious Verifiers.- Efficient Range Proofs with Transparent Setup from Bounded Integer Commitments.- Towards Accountability in CRS Generation.- Property-Preserving Hash Functions and ORAM.- Robust Property-Preserving Hash Functions for Hamming Distance and More.- Alibi: A Flaw in Cuckoo-Hashing based Hierarchical ORAM Schemes and a Solution.- Structured Encryption and Dynamic Leakage Suppression.- Blockchain.- Dynamic Ad Hoc Clock Synchronization.- TARDIS: A Foundation of Time-Lock Puzzles in UC.- Privacy and Law Enforcement.- On the power of multiple anonymous messages: Frequency Estimation and Selection in the Shuffle Model of Differential Privacy.- Non-Interactive Anonymous Router.- "Bifurcated Cryptography" Folding Competing Cryptosystems into a Single Scheme: On Accountability vs. Anonymity in Private Signatures.- Abuse Resistant Law Enforcement Access Systems.