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This book constitutes the refereed proceedings of the 9th International Conference on Information Security Practice and Experience, ISPEC 2013, held in Lanzhou, China, in May 2013. The 27 revised full papers presented were carefully reviewed and selected from 71 submissions. The papers are organized in topical sections on network security; identity-based cryptography; cryptographic primitives; security protocols; system security; software security and DRM; and cryptanalysis and side channel attacks.

Computer science. --- Data protection. --- Data encryption (Computer science). --- Information Systems. --- Computer Science. --- Systems and Data Security. --- Data Encryption. --- Management of Computing and Information Systems. --- Engineering & Applied Sciences --- Computer Science --- Data encoding (Computer science) --- Encryption of data (Computer science) --- Data governance --- Data regulation --- Personal data protection --- Protection, Data --- Informatics --- Computer security. --- Management information systems. --- Computer security --- Computer networks --- Data encryption (Computer science) --- Security measures --- Cryptology. --- Cryptography --- Computer privacy --- Computer system security --- Computer systems --- Computers --- Cyber security --- Cybersecurity --- Electronic digital computers --- Protection of computer systems --- Security of computer systems --- Data protection --- Security systems --- Hacking --- Protection --- Science --- Computer-based information systems --- EIS (Information systems) --- Executive information systems --- MIS (Information systems) --- Sociotechnical systems --- Information resources management --- Management --- Communication systems

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Electronic funds transfers. --- EFT (Electronic funds transfers) --- Electronic banking --- Electronic check clearing --- Electronic money systems --- Electronic payments systems --- Electronic transfer of funds --- Funds, Electronic transfers of --- Telebanking --- Transfers of funds, Electronic --- Electronic data interchange --- Electronic benefits transfers --- Home banking services

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This book constitutes the refereed proceedings of the 18th International Conference on Cryptology and Network Security, CANS 2019, held in Fuzhou, China, in October 2019. The 21 full papers and 8 short papers were carefully reviewed and selected from 55 submissions. The papers focus on topics such as homomorphic encryption; SIKE and Hash; lattice and post-quantum cryptography; searchable encryption; blockchains, cloud security; secret sharing and interval test, LWE; encryption, data aggregation, and revocation; and signature, ML, payment, and factorization.

Data encryption (Computer science). --- Software engineering. --- Artificial intelligence. --- Data mining. --- Special purpose computers. --- Computer communication systems. --- Cryptology. --- Software Engineering/Programming and Operating Systems. --- Artificial Intelligence. --- Data Mining and Knowledge Discovery. --- Special Purpose and Application-Based Systems. --- Computer Communication Networks. --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Special purpose computers --- Computers --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- AI (Artificial intelligence) --- Artificial thinking --- Electronic brains --- Intellectronics --- Intelligence, Artificial --- Intelligent machines --- Machine intelligence --- Thinking, Artificial --- Bionics --- Cognitive science --- Digital computer simulation --- Logic machines --- Machine theory --- Self-organizing systems --- Simulation methods --- Fifth generation computers --- Neural computers --- Computer software engineering --- Engineering --- Data encoding (Computer science) --- Encryption of data (Computer science) --- Computer security --- Cryptography --- Distributed processing --- Data encryption (Computer science)

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This book investigates tradeoff between security and usability in designing leakage resilient password systems (LRP) and introduces two practical LRP systems named Cover Pad and ShadowKey. It demonstrates that existing LRP systems are subject to both brute force attacks and statistical attacks and that these attacks cannot be effectively mitigated without sacrificing the usability of LRP systems. Quantitative analysis proves that a secure LRP system in practical settings imposes a considerable amount of cognitive workload unless certain secure channels are involved. The book introduces a secure and practical LRP system, named Cover Pad, for password entry on touch-screen mobile devices. Cover Pad leverages a temporary secure channel between a user and a touch screen which can be easily realized by placing a hand shielding gesture on the touch screen. The temporary secure channel is used to deliver a hidden message to the user for transforming each password symbol before entering it on the touch screen. A user study shows the impact of these testing conditions on the users' performance in practice. Finally, this book introduces a new LRP system named ShadowKey. Shadow Key is designed to achieve better usability for leakage resilient password entry. It leverages either a permanent secure channel, which naturally exists between a user and the display unit of certain mobile devices, or a temporary secure channel, which can be easily realized between a user and a touch screen with a hand-shielding gesture. The secure channel protects the mappings between original password symbols and associated random symbols. Unlike previous LRP system users, Shadow Key users do not need to remember anything except their passwords. Leakage Resilient Password Systems is designed for professionals working in the security industry. Advanced-level students studying computer science and electrical engineering will find this brief full of useful material.

Electrical engineering --- Applied physical engineering --- Mass communications --- Programming --- Computer architecture. Operating systems --- Information systems --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- cryptografie --- computers --- informatica --- informatiesystemen --- computerbeveiliging --- elektrotechniek --- communicatietechnologie