Progress in Cryptology – INDOCRYPT 2021 22nd International Conference on Cryptology in India, Jaipur, India, December 12–15, 2021, Proceedings

This book constitutes the refereed proceedings of the 22^nd International Conference on Cryptology in India, INDOCRYPT 2021, which was held in Jaipur, India, during December 12-15, 2021.

The 27 full papers included in these proceedings were carefully reviewed and selected from 65 submissions. They were organized in topical sections as follows: authenticated encryption; symmetric cryptography; lightweight cryptography; side-channel attacks; fault attacks; post-quantum cryptography; public key encryption and protocols; cryptographic constructions; blockchains.

Authenticated Encryption.- Revisiting the Security of COMET Authenticated Encryption Scheme.- tHyENA: Making HyENA Even Smaller.- Panther: A Sponge Based Lightweight Authenticated Encryption Scheme.- Symmetric Cryptography.- Crooked Indi?erentiability of Enveloped XOR Revisited.- Sequential Indi?erentiability of Confusion-Di?usion Networks.- Elastic-Tweak: A Framework for Short Tweak Tweakable Block Cipher.- Lightweight Cryptography.- Three Input Exclusive-OR Gate Support For Boyar-Peralta’s Algorithm.- Pushing the Limits: Searching for Implementations with the Smallest Area for Lightweight S-Boxes.- Quantum Resource Estimation for FSR based Symmetric Ciphers & Related Grover’s Attacks.- Side-Channel Attacks.- Analyzing Masked Ciphers Against Transition and Coupling E?ects.- A Lightweight Implementation of Saber Resistant Against Side-Channel Attacks.- Improving First-Order Threshold Implementations of SKINNY.- Fault Attacks.- Di?erential Fault Attackon Espresso.- Di?erential Fault Attack on Montgomery Ladder and in the Presence of Scalar Randomization.- Fault-Enabled Chosen-Ciphertext Attacks on Kyber.- Post-Quantum Cryptography.- DeCSIDH: Delegating Isogeny Computations in the CSIDH Setting.- Key-Oblivious Encryption from Isogenies with Application to Accountable Tracing Signatures.- Identity-Based Signature and Extended Forking Algorithm in the Multivariate Quadratic Setting.- Public Key Encryption and Protocols.- Identity-Based Matchmaking Encryption without Random Oracles.- Forward-Secure Public Key Encryption without Key Update from Proof-of-Stake Blockchain.- Cryptanalysis of the Privacy-Preserving Ride-Hailing Service TRACE.- Cryptographic Constructions.- Exipnos: An E?cient Veri?able Dynamic Symmetric Searchable Encryption Scheme with Forward and Backward Privacy.- Smooth Zero-Knowledge Hash Functions.- Another Use of the Five-Card Trick: Card-Minimal Secure Three-Input Majority Function Evaluation.- Blockchains.- On Elapsed Time Consensus Protocols.- Time-release Cryptography from Minimal Circuit Assumptions.- Succinct Publicly-Certi?able Proofs (or, Can a Blockchain Verify a Designated-Veri?er Proof?).