Block Ciphers -- Best Paper: How Fast Can SM4 Be in Software? -- LLLWBC: A New Low-Latency Light-Weight Block Cipher -- New Automatic Search Tool for Searching for Impossible Differentials Using Undisturbed Bits -- Public key Encryption & Signature -- You Can Sign but Not Decrypt: Hierarchical Integrated Encryption and Signature -- SR-MuSig2: A Scalable and Reconfigurable Multi-signature Scheme and Its Applications -- McEliece-type encryption based on Gabidulin codes with no hidden structure -- Quantum -- Optimizing the depth of quantum implementations of linear layers -- IND-CCA Security of Kyber in the Quantum Random Oracle Model, Revisited -- MPC -- Practical Multi-party Private Set Intersection Cardinality and Intersection-Sum Under Arbitrary Collusion -- Amortizing Division and Exponentiation -- Cryptanalysis -- Generalized Boomerang Connectivity Table and Improved Cryptanalysis of GIFT -- Cryptanalysis of Ciminion -- Clustering Effect of Iterative Differential and Linear Trails -- Differential Cryptanalysis of Round-reduced SPEEDY Family -- Mathematical aspects of Crypto -- A note on inverted twisted Edwards curve -- Efficiently Computable Complex Multiplication of Elliptic Curves -- Several classes of Niho type Boolean functions with few Walsh transform values -- Stream ciphers -- Higher-Order Masking Scheme for Trivium Hardware Implementation -- An Experimentally Verified Attack on 820-Round Trivium -- Malware -- HinPage: Illegal and Harmful Webpage Identification Using Transductive Classification -- Detecting API Missing-Check Bugs Through Complete Cross Checking of Erroneous Returns -- Efficient DNN Backdoor Detection Guided by Static Weight Analysis -- Mimic Octopus Attack: Dynamic Camouflage Adversarial Examples using Mimetic Feature for 3D Humans -- Lattices -- Subfield Attacks on HSVP in Ideal Lattices -- On the Measurement and Simulation of the BKZ Behavior for q-ary Lattices -- Inferring Sequences Produced by the Quadratic Generator.

This book constitutes the refereed proceedings of the 18th International Conference on Information Security and Cryptology, Inscrypt 2022, held in Beijing, China during December 11-13, 2022. The 23 full papers and 3 short papers included in this book were carefully reviewed and selected from 68 submissions. They were organized in topical sections as follows: Block Ciphers, Public key Encryption & Signature, Quantum, MPC, Cryptanalysis, Mathematical aspects of Crypto, Stream ciphers, Malware, Lattices.