Security models -- Handling Adaptive Compromise for Practical Encryption Schemes -- Overcoming Impossibility Results in Composable Security using Interval-Wise Guarantees -- Indifferentiability for Public Key Cryptosystems -- Quantifying the Security Cost of Migrating Protocols to Practice -- Symmetric and Real World Cryptography -- The Memory-Tightness of Authenticated Encryption -- Time-Space Tradeoffs and Short Collisions in Merkle-Damgård Hash Functions -- The Summation-Truncation Hybrid: Reusing Discarded Bits for Free -- Security Analysis of NIST CTR-DRBG -- Security Analysis and Improvements for the IETF MLS Standard for Group Messaging -- Universally Composable Relaxed Password Authenticated Key Exchange -- Anonymous Tokens with Private Metadata Bit -- Hardware Security and Leakage Resilience -- Random Probing Security: Verification, Composition, Expansion and New Constructions -- Mode-Level vs. Implementation-Level Physical Security in Symmetric Cryptography: A Practical Guide Through the Leakage-Resistance Jungle -- Leakage-Resilient Key Exchange and Two-Seed Extractors -- Outsourced encryption -- Lower Bounds for Encrypted Multi-Maps and Searchable Encryption in the Leakage Cell Probe Model -- Fast and Secure Updatable Encryption -- Incompressible Encodings -- Constructions -- New Constructions of Hinting PRGs, OWFs with Encryption, and more -- Adaptively Secure Constrained Pseudorandom Functions in the Standard Model -- Collusion Resistant Watermarkable PRFs from Standard Assumptions -- Verifiable Registration-Based Encryption -- New Techniques for Traitor Tracing: Size N^{1/3} and More from Pairings -- Public Key Cryptography -- Functional Encryption for Attribute-Weighted Sums from k-Lin -- Amplifying the Security of Functional Encryption, Unconditionally -- Dynamic Decentralized Functional Encryption -- On Succinct Arguments and Witness Encryption from Groups -- Fully Deniable Interactive Encryption -- Chosen Ciphertext Security from Injective Trapdoor Functions.

Conference on Cryptologic Research, CRYPTO 2020, which was held during August 17-21, 2020. Crypto has traditionally been held at UCSB every year, but due to the COVID-19 pandemic it will be an online event in 2020. The 85 papers presented in the proceedings were carefully reviewed and selected from a total of 371 submissions. They were organized in topical sections as follows: Part I: Security Models; Symmetric and Real World Cryptography; Hardware Security and Leakage Resilience; Outsourced encryption; Constructions. Part II: Public Key Cryptanalysis; Lattice Algorithms and Cryptanalysis; Lattice-based and Post Quantum Cryptography; Multi-Party Computation. Part III: Multi-Party Computation; Secret Sharing; Cryptanalysis; Delay functions; Zero Knowledge. .