ThesearetheproceedingsofCHES2002,theFourthWorkshoponCryptographic Hardware and Embedded Systems. After the ?rst two CHES Workshops held in Massachusetts, and the third held in Europe, this is the ?rst Workshop on the West Coast of the United States. There was a record number of submissions this year and in response the technical program was extended to 3 days. As is evident by the papers in these proceedings, there have been again many excellent submissions. Selecting the papers for this year’s CHES was not an easy task, and we regret that we could not accept many contributions due to the limited availability of time. There were 101 submissions this year, of which 39 were selected for presentation. We continue to observe a steady increase over previous years: 42 submissions at CHES ’99, 51 at CHES 2000, and 66 at CHES 2001. We interpret this as a continuing need for a workshop series that c- bines theory and practice for integrating strong security features into modern communicationsandcomputerapplications. Inadditiontothesubmittedcont- butions, Jean-Jacques Quisquater (UCL, Belgium), Sanjay Sarma (MIT, USA) and a panel of experts on hardware random number generation gave invited talks. As in the previous years, the focus of the Workshop is on all aspects of cr- tographic hardware and embedded system security. Of special interest were c- tributionsthatdescribenewmethodsfore?cienthardwareimplementationsand high-speed software for embedded systems, e. g. , smart cards, microprocessors, DSPs, etc. CHES also continues to be an important forum for new theoretical and practical ?ndings in the important and growing ?eld of side-channel attacks.

This book constitutes the refereed proceedings of the 6th International workshop on Cryptographic Hardware and Embedded Systems, CHES 2004, held in Cambridge, MA, USA in August 2004. The 32 revised full papers presented were carefully reviewed and selected from 125 submissions. The papers are organized in topical sections on side channels, modular multiplication, low resources, implementation aspects, collision attacks, fault attacks, hardware implementation, and authentication and signatures.

This book constitutes the refereed proceedings of the 7th International Workshop on Cryptographic Hardware and Embedded Systems, CHES 2005, held in Edinburgh, UK in August/September 2005. The 32 revised full papers presented were carefully reviewed and selected from 108 submissions. The papers are organized in topical sections on side channels, arithmetic for cryptanalysis, low resources, special purpose hardware, hardware attacks and countermeasures, arithmetic for cryptography, trusted computing, and efficient hardware.

This book constitutes the refereed proceedings of the 5th International Workshop on Cryptographic Hardware and Embedded Systems, CHES 2003, held in Cologne, Germany in September 2003. The 32 revised full papers presented were carefully reviewed and selected from 111 submissions. The papers are organized in topical sections on side channel attack methodology, hardware factorization, symmetric cypher attacks and countermeasures, secure hardware logic, random number generators, efficient multiplication, efficient arithmetics, attacks on asymmetric cryptosystems, implementation of symmetric cyphers, hyperelliptic curve cryptography, countermeasures to side channel leakage, and security of standards.

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 three invited talks were carefully reviewed and selected from 112 submissions.

by Andrey Bogdanov, Thomas Eisenbarth, Andy Rupp and Christopher Wolf. The purpose of the award is to formally acknowledge excellence in research. We would like to c- gratulate the authors of these two papers.

This book constitutes the proceedings of the 19th International Conference on Cryptographic Hardware and Embedded Systems, CHES 2017, held in Taipei, Taiwan, in September 2017. The 33 full papers presented in this volume were carefully reviewed and selected from 130 submissions. The annual CHES conference highlights new results in the design and analysis of cryptographic hardware and soft- ware implementations. The workshop builds a valuable bridge between the research and cryptographic engineering communities and attracts participants from industry, academia, and government organizations.