This book constitutes the proceedings of the 15th International Conference on Applied Cryptology and Network Security, ACNS 2017, held in Kanazawa, Japan, in July 2017.The 34 papers presented in this volume were carefully reviewed and selected from 149 submissions.

Sampling From Arbitrary Centered Discrete Gaussians For Lattice-Based Cryptography.- Simple Security Definitions for and Constructions of 0-RTT Key Exchange.- TOPPSS: Cost-minimal Password-Protected Secret Sharing based on Threshold OPRF.- Secure and Efficient Pairing at 256-bit Security Level.- Data Protection and Mobile Security No Free Charge Theorem: a Covert Channel via USB Charging Cable on Mobile Devices.- Are You Lying: Validating the Time-Location of Outdoor Images.- Lights, Camera, Action! Exploring Effects of Visual Distractions on Completion of Security Tasks.- A Pilot Study of Multiple Password Interference between Text and Map-based Passwords.- Hierarchical Key Assignment with Dynamic Read-Write Privilege Enforcement and Extended KI-Security.- A Novel GPU-Based Implementation of the Cube Attack – Preliminary Results Against Trivium.- Related-Key Impossible-Differential Attack on Reduced-Round SKINNY.- Faster Secure Multi-Party Computation of AES and DES Using Lookup Tables.- An experimental study of the BDD approach for the search LWE problem.- Efficiently Obfuscating Re-Encryption Program under DDH Assumption.- Lattice-Based Group Signatures: Achieving Full Dynamicity with Ease.- A Practical Chosen Message Power Analysis Approach against Ciphers with the Key Whitening Layers.- Side-Channel Attacks meet Secure Network Protocols.- Lattice-based DAPS and Generalizations: Self-Enforcement in Signature Schemes.- Forward-Secure Searchable Encryption on Labeled Bipartite Graphs .- Bounds in Various Generalized Settings of the Discrete Logarithm Problem.- An Enhanced Binary Characteristic Set Algorithm And Its Applications to Algebraic Cryptanalysis.- Accountable Storage.- Maliciously Secure Multi-Client ORAM.- Legacy-Compliant Data Authentication for Industrial Control System Traffic.- Multi-Client Oblivious RAM Secure Against Malicious Servers.- Breaking and Fixing Mobile App Authentication with OAuth2.0-based Protocols.- Adaptive Proofs have Straightline Extractors (in the Random Oracle Model).- How to Achieve Bounded Key Dependent Message Security.- Signature Schemes with Randomized Verification.- SCRAPE: Scalable Randomness Attested by Public Entities.- cMix : Mixing with Minimal Real-Time Asymmetric Cryptographic Operation.- Almost Optimal Oblivious Transfer from QA-NIZK.- OnionPIR: Effective Protection of Sensitive Metadata in Online Communication Networks.