This report on the state of the art and future directions of public-key cryptography is published in accordance with the terms of reference of the European Institute for System Security (EISS). The EISS was founded in 1988 by cabinet resolution of the state government of Baden-W}rttemberg and its basic task is scientific research and knowledge transfer in the field of security in telecommunications and computer and information systems. This report gives the results of an EISS workshop on public-keycryptography and contains seven chapters: an introduction, the scope of the workshop, the topics chosen, classification and description of the most prominent public-key systems, the dependence of public-key cryptography on computational number theory, mistakes and problems with public-key systems, and a projection of needs and requirements for public-key systems. It is addressed to all members of the computer science community: systems developers, researchers, decision makers, standardization committees, patent offices, and users and customers of secure computer systems.

This volume contains the proceedings of the 4th International Conference on Applicable Algebra, Error-Correcting Codes, Combinatorics and Computer Algebra (AAECC-4), held in Karlsruhe, 23-26 September, 1986. Selected papers which were given at the conference have been reviewed a second time and are presented here.

This book contains the proceedings of EUROCRYPT 85, held in Paris in 1984, April 9-11, at the University of Paris, Sorbonne. EIJROCRYPT is now an annual international European meeting in cryptology, intended primarily for the international of researchers in this area. EUROCRYPT 84 was community following previous meetings held at Burg Feuerstein in 1982 and at IJdine in 1983. In fact EUROCRYPT 84 was thc first such meeting being organized under IXCR (International Association of Cryptology Research). Other sponsors were the well-known French association on cybernetics research AFCET, the LITP (Laborstoire d' Informntique thcorique called et de Programmation), which is a laboratory of computer science associated with CNRS, and the department of mathematics and computer science at the Ilniversity RenE Descartcs, Sorbonne. EUROCRYPT 83 was very successfull, with about 180 participants from a great variety of foreign countries and 50 papers addressing all aspects of cryptology, close to applied as well as theoretical. It also had a special feature, i.e. a special session on smart cards particularly welcome at the time, since France was then carrying on an ambitious program on smart cards. EUROCRYPT 84 was a great experience. We like to thank all the sponsors and all the authors for their submission of papers. Pakin, Decemben 74ti4. CONTENTS SECTION I: GENERAL THEORY, CLASSICAL METHODS 3 Cryptology and Complexity Theories ............................ G. RLiGGTU 1 0 On Cryptosystems based on Folynomials md I'inite Fields.. ..... R. irvi 16 Algehraical Structures of Cryptographic lransformations.. .....

This is the concluding volume of the second edition of the standard text on design theory. Since the first edition there has been extensive development of the theory and this book has been thoroughly rewritten to reflect this. In particular the growing importance of discrete mathematics to many parts of engineering and science have made designs a useful tool for applications, and this fact has been acknowledged here with the inclusion of an additional chapter on applications. It is suitable for advanced courses and as a reference work, not only for researchers in discrete mathematics or finite algebra, but also for those working in computer and communications engineering and other mathematically oriented disciplines. Exercises are included throughout, and the book concludes with an extensive and updated bibliography of well over 1800 items.

Addressing the most exciting and challenging areas in the profession, this text will be invaluable to any professional looking ahead to the future of special collections and related cultural heritage work. Special collections today-from rare books and other specialized book collections to audio recordings and visual images-offer librarians limitless opportunities to showcase their skills in curating, preserving, and offering access to these resources to patrons. Drawing on innovative practices and enduring values to address challenges and opportunities in the broad realm of special collections librarianship, this book updates the notion of special collections to the wide range of materials, institutions, and contexts where they exist today. The contributed essays describe the various kinds of innovative projects and practices that are sought by IMLS and other funding agencies today and serve to illustrate how going beyond a traditionally limited idea of special collections opens doors to far more engaging opportunities. Spanning the converging worlds of academic and special libraries, rare book collections, archives, museums, and other cultural heritage institutions, this book will be useful to newcomers and seasoned professionals alike. The essays address the recurring themes of managing and welcoming change and the impact of digital technologies throughout the book, whether regarding new approaches to outreach and instruction, the acquisition and curation of non-traditional collections, new structures for discovery and access in a digital world, or the nature of special collections work now. Both experienced professionals and recent graduates from one of the booming archival studies programs will find this text invaluable in creating a successful career in special collections or cultural heritage curation today and in the near future. Covers a broad range of special collections work that shares perspectives from many different practitioners and experts in the field Updates the notion of special collections to the wide range of institutions and contexts where they exist today, illustrating non-traditional opportunities for special collections work Expands job opportunities for readers by providing an overview of the most compelling and exciting trends and challenges in the changing field of special collections