This book constitutes the refereed proceedings of the three international workshops PAISI 2008, PACCF 2008, and SOCO 2008, held as satellite events of the IEEE International Conference on Intelligence and Security Informatics, ISI 2008, in Taipei, Taiwan, in June 2008.

The 55 revised full papers presented were carefully reviewed and selected from the presentations at the workshops. The 21 papers of the Pacific Asia Workshop on Intelligence and Security Informatics (PAISI 2008) cover topics such as information retrieval and event detection, internet security and cybercrime, currency and data protection, cryptography, image and video analysis, privacy issues, social networks, modeling and visualization, and network intrusion detection. The Pacific Asia Workshop on Cybercrime and Computer Forensics (PACCF 2008) furnishes 10 papers about forensic information management, forensic technologies, and forensic principles and tools. The 24 papers of the Workshop on Social Computing (SOCO 2008) are organized in topical sections on social web and social information management, social networks and agent-based modeling, as well as social opinions, e-commerce, security and privacy considerations.

This book constitutes the refereed proceedings of the 8th International Workshop on Information Security Applications, WISA 2007, held in Jeju Island, Korea, August 27-29, 2007.

The 27 revised full papers presented were carefully selected during two rounds of reviewing and improvement from 95 submissions. The papers are organized in topical sections on Public Key Crypto Applications, Biometrics/Information Hiding, Secure Hardware, Secure Systems, Wireless and Mobile Security, Application Security/Secure Systems, Access Control/DB Security, Smart Cards/Secure Systems and Anonymity and P2P Security.

Illustrating the power of algorithms, Algorithmic Cryptanalysis describes algorithmic methods with cryptographically relevant examples. Focusing on both private- and public-key cryptographic algorithms, it presents each algorithm either as a textual description, in pseudo-code, or in a C code program. Divided into three parts, the book begins with a short introduction to cryptography and a background chapter on elementary number theory and algebra. It then moves on to algorithms, with each chapter in this section dedicated to a single topic and often illustrated with simple cryptographic applications. The final part addresses more sophisticated cryptographic applications, including LFSR-based stream ciphers and index calculus methods. Accounting for the impact of current computer architectures, this book explores the algorithmic and implementation aspects of cryptanalysis methods. It can serve as a handbook of algorithmic methods for cryptographers as well as a textbook for undergraduate and graduate courses on cryptanalysis and cryptography.

The RSA Conference is the largest regularly-staged computer security event, with over 350 vendors and many thousands of attendees. The Cryptographers' Track (CT-RSA) is a research conference within the RSA Conference. CT-RSA began in 2001, and has become one of the major established venues for presenting cryptographic research papers to a wide variety of audiences. CT-RSA 2008 was held in San Francisco, California from April 8 to April 11. The proceedings of CT-RSA 2008 contain 26 papers selected from 95 subm- sions pertaining to all aspects of cryptography. Each submission was reviewed by at least three reviewers, which was made possible by the hard work of 27 P- gram Committee members and many external reviewers listed on the following pages. The papers were selected following a detailed online discussion among the Program Committee members. The program included an invited talk by Sha? Goldwasser. The current proceedings include a short abstract of her talk. I would like to express my deep gratitude to the Program Committee m- bers, who volunteered their expertise and hard work over several months, as well as to the external reviewers. Special thanks to Shai Halevi for providing and maintaining the Web review system used for paper submission, reviewing, and ?nal-version preparation. Finally, I would like to thank Burt Kaliski and Ari Juels of RSA Laboratories, as well as the RSA conference team, especially Bree LaBollita, for their assistance throughout the process.

This book constitutes the refereed proceedings of the Cryptographers' Track at the RSA Conference 2007, CT-RSA 2007, held in San Francisco, CA, USA in February 2007.

The 25 revised full papers presented together with 2 invited papers were carefully reviewed and selected from 73 submissions. The papers are organized in topical sections on symmetric-key encryption, signatures and authentication, hash functions, digital signatures, cryptographic protocols, side-channel attacks, and efficient implementation.

This book constitutes the thoroughly refereed post-proceedings of the Third European Workshop on Security and Privacy in Ad hoc and Sensor Networks, ESAS 2006, held in Hamburg, Germany in September 2006 in conjunction with the 11th European Symposium on Research in Computer Security (ESORICS 2006). The papers present original research on all aspects of security and privacy in wireless ad hoc and sensor networks.

This book constitutes the refereed proceedings of the Second International Conference on Information Systems Security, ICISS 2006, held in Kolkata, India in December 2006. The 20 revised full papers and five short papers presented together with four invited papers and three ongoing project summaries were carefully reviewed and selected from 79 submissions. The papers discuss in depth the current state of the research and practice in information systems security.

This book constitutes the refereed proceedings of the 5th International Conference on Cryptology and Network Security, CANS 2006, held in Suzhou, China in December 2006.

The 26 revised full papers presented together with 2 invited papers were carefully reviewed and selected from 148 submissions. The papers are organized in topical sections on encryption, key exchange, authentication and signatures, proxy signatures, cryptanalysis, implementation, steganalysis and watermarking, boolean functions and stream ciphers, intrusion detection, as well as disponibility and reliability.

This book constitutes the thoroughly refereed post-proceedings of the 8th International Workshop on Information Hiding, IH 2006, held in Alexandria, VA, USA in July 2006.

The 25 revised full papers presented were carefully selected from over 70 papers submitted. The papers are organized in topical sections on watermarking, information hiding and networking, data hiding in unusual content, fundamentals, software protection, steganalysis, steganography, and subliminal channels.

This book constitutes the thoroughly refereed post-proceedings of the First International Workshop on Critical Information Infrastructures Security, CRITIS 2006, held on Samos Island, Greece in August/September 2006 in conjunction with ISC 2006, the 9th International Information Security Conference. The papers address all security-related heterogeneous aspects of critical information infrastructures.

This book constitutes the refereed proceedings of the 27th Annual International Cryptology Conference, CRYPTO 2007, held in Santa Barbara, CA, USA in August 2007.

The 33 revised full papers presented together with 1 invited lecture were carefully reviewed and selected from 186 submissions. The papers address all current foundational, theoretical and research aspects of cryptology, cryptography, and cryptanalysis as well as advanced applications.

This book constitutes the refereed proceedings of the 7th International Conference on Cryptology in India, INDOCRYPT 2006, held in Kolkata, India in December 2006.

The 29 revised full papers presented together with 2 invited papers were carefully reviewed and selected from 186 submissions. The papers are organized in topical sections on symmetric cryptography: attacks, hash functions, provable security: key agreement, provable security: public key cryptograpy, symmetric cryptography: design, modes of operation and message authentication codes, fast implementation of public key cryptography, id-based cryptography, as well as embedded systems and side channel attacks.

This book constitutes the refereed proceedings of the 11th International Workshop on Practice and Theory in Public-Key Cryptography, PKC 2008, held in Barcelona, Spain, in March 2008.

The 21 revised full papers presented together with 1 invited lecture were carefully reviewed and selected from 71 submissions. The papers are organized in topical sections on algebraic and number theoretical cryptoanalysis, theory of public key encryption, digital signatures, identification, broadcast and key agreement, implementation of fast arithmetic, and public key encryption.

This book constitutes the refereed proceedings of the 10th IFIP TC-6 TC-11 International Conference on Communications and Multimedia Security, CMS 2006, held in Heraklion, Crete, Greece in October 2006.

The 22 revised full papers presented were carefully reviewed and selected from 76 submissions.

This book constitutes the refereed proceedings of the 8th International Workshop on Cryptographic Hardware and Embedded Systems, CHES 2006, held in Yokohama, Japan in October 2006.

The 32 revised full papers presented together with 3 invited talks were carefully reviewed and selected from 112 submissions. The papers are organized in topical sections on side channels, low resources, hardware attacks and countermeasures, special purpose hardware, efficient algorithms for embedded processors, side channels, hardware attacks and countermeasures, efficient hardware, trusted computing, side channels, hardware attacks and countermeasures, as well as efficient hardware.

This book constitutes the refereed proceedings of the Third International Workshop on Fault Diagnosis and Tolerance in Cryptography, FDTC 2006, held in Yokohama, Japan in October 2006.

The 12 revised papers of FDTC 2006 are presented together with nine papers from FDTC 2004 and FDTC 2005 that passed a second round of reviewing. They all provide a comprehensive introduction to the issues faced by designers of robust cryptographic devices.

This book constitutes the refereed proceedings of the 9th International Conference on Information and Communications Security, ICICS 2007, held in Zhengzhou, China, in December 2007.

The 38 revised full papers presented were carefully reviewed and selected from 222 submissions. The papers are organized in topical sections on authentication and key exchange, digital signatures, applications, watermarking, fast implementations, applied cryptography, cryptanalysis, formal analysis, system security, and network security.

Since the mid 1990s, data hiding has been proposed as an enabling technology for securing multimedia communication, and is now used in various applications including broadcast monitoring, movie fingerprinting, steganography, video indexing and retrieval, and image authentication. Data hiding and cryptographic techniques are often combined to complement each other, thus triggering the development of a new research field in multimedia security. Two related disciplines, steganalysis and data forensics, are also increasingly attracting researchers and forming another new research field in multimedia security. This journal, LNCS Transactions on Data Hiding and Multimedia Security, aims to be a forum for all researchers in these emerging fields, publishing both original and archival research results.

This inaugural issue contains five papers dealing with a wide range of topics related to multimedia security. The first paper deals with evaluation criteria for the performance of audio watermarking algorithms. The second provides a survey of problems related to watermark security. The third discusses practical implementations of zero-knowledge watermark detectors and proposes efficient solutions for correlation-based detectors. The fourth introduces the concept of Personal Entertainment Domains (PED) in Digital Rights Management (DRM) schemes. The fifth reports on the use of fusion techniques to improve the detection accuracy of steganalysis.

This book constitutes the refereed proceedings of the 10th International Conference on Information Security and Cryptology, ICISC 2007, held in Seoul, Korea, November 29-30, 2007.

The 28 revised full papers presented have gone through two rounds of reviewing and improvement and were selected from 123 submissions. The papers are organized in topical sections on cryptoanalysis, access control, system security, biometrics, cryptographic protocols, hash functions, block and stream ciphers, copyright protection, smart/java cards, elliptic curve cryptosystems as well as authentication and authorization.

This book constitutes the thoroughly refereed post-proceedings of the 9th International Workshop on Information Hiding, IH 2007, held in Saint Malo, France, in June 2007.

The 25 revised full papers presented were carefully reviewed and selected from 105 submissions. The papers are organized in topical sections on new steganographic schemes, watermarking schemes, computer security, steganography and code theory, watermarking security, steganalysis, watermarking and re-synchronization, fingerprinting, forensics, and steganalysis.

Here are the refereed proceedings of the 5th International Conference on Security and Cryptology for Networks, SCN 2006. The book offers 24 revised full papers presented together with the abstract of an invited talk. The papers are organized in topical sections on distributed systems security, signature schemes variants, block cipher analysis, anonymity and e-commerce, public key encryption and key exchange, secret sharing, symmetric key cryptanalisis and randomness, applied authentication, and more.

This book constitutes the refereed proceedings of the First International Conference on Provable Security, ProvSec 2007, held in Wollongong, Australia, October 31 - November 2, 2007.

The 10 revised full papers presented together with 7 short papers were carefully reviewed and selected from 51 submissions. The papers are organized in topical sections on Authentication, Asymmetric Encryption, Signature, Protocol and Proving Technique, Authentication and Symmetric Encryption, Signature and Asymmetric Encryption.

This book constitutes the refereed proceedings of the Second International Workshop on Security, IWSEC 2007, held in Nara, Japan, October 29-31, 2007.

The 30 revised full papers presented were carefully reviewed and selected from 112 submissions. The papers are organized in topical sections on Software and Multimedia security, Public-key cryptography, Network security, E-commerce and Voting, Operating systems, Security and Information management, Anonymity and Privacy and Digital signatures, Hash function and Protocol.

This book constitutes the refereed proceedings of the 10th International Conference on Information Security Conference, ISC 2007, held in Valparaiso, Chile, October 9-12, 2007.

The 28 revised full papers presented were carefully reviewed and selected from 116 submissions. The topics include Intrusion Detection, Digital Rights Management, Symmetric-Key Cryptography, Cryptographic Protocols and Schemes, Identity-Based Schemes, Cryptanalysis, DoS Protection, Software Obfuscation, Public-Key Cryptosystems, Elliptic Curves and Applications and Security Issues in Databases.

This book constitutes the refereed proceedings of the 13th International Conference on the Theory and Application of Cryptology and Information Security, ASIACRYPT 2007, held in Kuching, Malaysia, in December 2007. The papers are organized in topical sections on number theory and elliptic curve, protocol, hash function design, group/broadcast cryptography, mac and implementation, multiparty computation, block ciphers, foundation, public key encryption, and cryptanalysis.