Explore cutting-edge research in symmetric-key cryptography through this conference session from Asiacrypt 2021. Delve into topics such as Luby-Rackoff constructions, double-block-length hash functions, authenticated encryption, key-alternating ciphers, format-preserving encryption, and message authentication. Learn from expert speakers as they present advancements in cryptographic techniques, including improvements to existing algorithms, new security proofs, and novel constructions. Gain insights into the latest developments in symmetric-key cryptography and their implications for secure communication and data protection.