This book constitutes the refereed proceedings of the 25th Annual International Conference on the Theory and Applications of Cryptographic Techniques, EUROCRYPT 2006. 33 revised full papers are presented together with 2 invited talks. The papers are organized in topical sections on cryptanalysis, cryptography meets humans, stream ciphers, hash functions, oblivious transfer, numbers and lattices, foundations, block ciphers, cryptography without random oracles, multiparty computation, and cryptography for groups.

These are the proceedings of the 24th Annual IACR Eurocrypt Conference. The conference was sponsored by the International Association for Cryptologic Research(IACR;seewww.iacr.org),thisyearincooperationwiththeComputer Science Department of the University of Aarhus, Denmark. As General Chair, Ivan Damg? ard was responsible for local organization. TheEurocrypt2005ProgramCommittee(PC)consistedof30internationally renowned experts. Their names and a?liations are listed on pages VII and VIII of these proceedings. By the November 15, 2004 submission deadline the PC had received a total of 190 submissions via the IACR Electronic Submission Server. The subsequent selection process was divided into two phases, as usual. In the review phase each submission was carefully scrutinized by at least three independent reviewers, and the review reports, often extensive, were committed to the IACR Web Review System. These were taken as the starting point for the PC-wideWeb-baseddiscussionphase.Duringthisphase,additionalreportswere provided as needed, and the PC eventually had some 700 reports at its disposal. In addition, the discussions generated more than 850 messages, all posted in the system. During the entire PC phase, which started in August 2003 with my earliest invitations to PC members and which continued until March 2005, more than 1000 email messages were communicated. Moreover, the PC received much appreciated assistance from a large body of external reviewers. Their names are listed on page VIII of these proceedings.

This book constitutes the refereed proceedings of the 26th Annual International Cryptology Conference, CRYPTO 2006, held in Santa Barbara, California, USA in August 2006. The 34 revised full papers presented together with 2 invited lectures were carefully reviewed and selected from 250 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 28th Annual International Conference on the Theory and Applications of Cryptographic Techniques, EUROCRYPT 2009, held in Cologne, Germany, in April 2009. The 33 revised full papers presented together with 1 invited lecture were carefully reviewed and selected from 148 submissions. The papers address all current foundational, theoretical and research aspects of cryptology, cryptography, and cryptanalysis as well as advanced applications. The papers are organized in topical sections on security, proofs, and models, hash cryptanalysis, group and broadcast encryption, cryptosystems, cryptanalysis, side channels, curves, and randomness.

The INDOCRYPT series of conferences started in 2000. INDOCRYPT 2004 was the ?fth one in this series. The popularity of this series is increasing every year. The number of papers submitted to INDOCRYPT 2004 was 181, out of which 147 papers conformed to the speci?cations in the call for papers and, therefore, were accepted to the review process. Those 147 submissions were spread over 22 countries. Only 30 papers were accepted to this proceedings. We should note that many of the papers that were not accepted were of good quality but only the top 30 papers were accepted. Each submission received at least three independent - views. The selection process also included a Web-based discussion phase. We made e?orts to compare the submissions with other ongoing conferences around the world in order to ensure detection of double-submissions, which were not - lowed by the call for papers. We wish to acknowledge the use of the Web-based review software developed by Bart Preneel, Wim Moreau, and Joris Claessens in conducting the review process electronically. The software greatly facilitated the Program Committee in completing the review process on time. We would like to thank C ́ edric Lauradoux and the team at INRIA for their total support in c- ?guring and managing the Web-based submission and review softwares. We are unable to imagine the outcome of the review process without their participation. This year the invited talks were presented by Prof. Colin Boyd and Prof.

This book constitutes the refereed proceedings of the 5th International Conference on Applied Cryptography and Network Security, ACNS 2007, held in Zhuhai, China, June 2007. The 31 revised full papers cover signature schemes, computer and network security, cryptanalysis, group-oriented security, cryptographic protocols, anonymous authentication, identity-based cryptography, and security in wireless, ad-hoc, and peer-to-peer networks.

This book constitutes the refereed proceedings of the 10th IMA International Conference on Cryptography and Coding, held in Cirencester, UK, in December 2005. The 26 revised full papers presented together with 4 invited contributions were carefully reviewed and selected from 94 submissions. The papers are organized in topical sections on coding theory, signatures and signcryption, symmetric cryptography, side channels, algebraic cryptanalysis, information theoretic applications, number theoretic foundations, and public key and ID-based encryption schemes.

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 and 2 invited papers cover such topics as symmetric cryptography, provable security, fast implementation of public key cryptography, id-based cryptography, as well as embedded systems and side channel attacks.

This book constitutes the thoroughly refereed post-proceedings of the 10th International Conference on Financial Cryptography and Data Security, FC 2006, held in Anguilla, British West Indies in February/March 2006. The 19 revised full papers and six revised short papers presented were carefully reviewed and selected from 64 submissions. The papers are organized in topical sections.