Delfs, Hans
Overview
Works:  8 works in 101 publications in 3 languages and 2,367 library holdings 

Roles:  Author, Editor 
Classifications:  QA3, 005.82 
Publication Timeline
.
Most widely held works by
Hans Delfs
Introduction to cryptography : principles and applications by
Hans Delfs(
Book
)
42 editions published between 2002 and 2015 in 4 languages and held by 592 WorldCat member libraries worldwide
The first part of this book covers the key concepts of cryptography on an undergraduate level, from encryption and digital signatures to cryptographic protocols. Essential techniques are demonstrated in protocols for key exchange, user identification, electronic elections and digital cash. In the second part, more advanced topics are addressed, such as the bit security of oneway functions and computationally perfect pseudorandom bit generators. The security of cryptographic schemes is a central topic. Typical examples of provably secure encryption and signature schemes and their security proofs are given. Though particular attention is given to the mathematical foundations, no special background in mathematics is presumed. The necessary algebra, number theory and probability theory are included in the appendix. Each chapter closes with a collection of exercises. In the second edition the authors added a complete description of the AES, an extended section on cryptographic hash functions, and new sections on random oracle proofs and publickey encryption schemes that are provably secure against adaptivelychosenciphertext attacks. The third edition is a further substantive extension, with new topics added, including: elliptic curve cryptography; Paillier encryption; quantum cryptography; the new SHA3 standard for cryptographic hash functions; a considerably extended section on electronic elections and Internet voting; mix nets; and zeroknowledge proofs of shuffles. The book is appropriate for undergraduate and graduate students in computer science, mathematics, and engineering
42 editions published between 2002 and 2015 in 4 languages and held by 592 WorldCat member libraries worldwide
The first part of this book covers the key concepts of cryptography on an undergraduate level, from encryption and digital signatures to cryptographic protocols. Essential techniques are demonstrated in protocols for key exchange, user identification, electronic elections and digital cash. In the second part, more advanced topics are addressed, such as the bit security of oneway functions and computationally perfect pseudorandom bit generators. The security of cryptographic schemes is a central topic. Typical examples of provably secure encryption and signature schemes and their security proofs are given. Though particular attention is given to the mathematical foundations, no special background in mathematics is presumed. The necessary algebra, number theory and probability theory are included in the appendix. Each chapter closes with a collection of exercises. In the second edition the authors added a complete description of the AES, an extended section on cryptographic hash functions, and new sections on random oracle proofs and publickey encryption schemes that are provably secure against adaptivelychosenciphertext attacks. The third edition is a further substantive extension, with new topics added, including: elliptic curve cryptography; Paillier encryption; quantum cryptography; the new SHA3 standard for cryptographic hash functions; a considerably extended section on electronic elections and Internet voting; mix nets; and zeroknowledge proofs of shuffles. The book is appropriate for undergraduate and graduate students in computer science, mathematics, and engineering
Locally semialgebraic spaces by
Hans Delfs(
Book
)
18 editions published in 1985 in 3 languages and held by 350 WorldCat member libraries worldwide
18 editions published in 1985 in 3 languages and held by 350 WorldCat member libraries worldwide
Homology of locally semialgebraic spaces by
Hans Delfs(
Book
)
20 editions published in 1991 in English and Undetermined and held by 325 WorldCat member libraries worldwide
Locally semialgebraic spaces serve as an appropriate framework for studying the topological properties of varieties and semialgebraic sets over a real closed field. This book contributes to the fundamental theory of semialgebraic topology and falls into two main parts. The first dealswith sheaves and their cohomology on spaces which locally look like a constructible subset of a real spectrum. Topics like families of support, homotopy, acyclic sheaves, basechange theorems and cohomological dimension are considered. In the second part a homology theory for locally complete locally semialgebraic spaces over a real closed field is developed, the semialgebraic analogue of classical BoreMoorehomology. Topics include fundamental classes of manifolds and varieties, Poincare duality, extensions of the base field and a comparison with the classical theory. Applying semialgebraic BorelMoorehomology, a semialgebraic ("topological") approach to intersection theory on varieties over an algebraically closed field of characteristic zero is given. The book is addressed to researchers and advanced students in real algebraic geometry and related areas
20 editions published in 1991 in English and Undetermined and held by 325 WorldCat member libraries worldwide
Locally semialgebraic spaces serve as an appropriate framework for studying the topological properties of varieties and semialgebraic sets over a real closed field. This book contributes to the fundamental theory of semialgebraic topology and falls into two main parts. The first dealswith sheaves and their cohomology on spaces which locally look like a constructible subset of a real spectrum. Topics like families of support, homotopy, acyclic sheaves, basechange theorems and cohomological dimension are considered. In the second part a homology theory for locally complete locally semialgebraic spaces over a real closed field is developed, the semialgebraic analogue of classical BoreMoorehomology. Topics include fundamental classes of manifolds and varieties, Poincare duality, extensions of the base field and a comparison with the classical theory. Applying semialgebraic BorelMoorehomology, a semialgebraic ("topological") approach to intersection theory on varieties over an algebraically closed field of characteristic zero is given. The book is addressed to researchers and advanced students in real algebraic geometry and related areas
Der gesamte Briefwechsel : "Die absolute Wahrheit, so wie ich sie fühle" by
Ernst Ludwig Kirchner(
Book
)
5 editions published in 2010 in German and held by 26 WorldCat member libraries worldwide
5 editions published in 2010 in German and held by 26 WorldCat member libraries worldwide
Kohomologie affiner semialgebraischer Räume by
Hans Delfs(
Book
)
2 editions published in 1980 in German and held by 23 WorldCat member libraries worldwide
2 editions published in 1980 in German and held by 23 WorldCat member libraries worldwide
Der gesamte Briefwechsel : "Die absolute Wahrheit, so wie ich sie fühle" by
Ernst Ludwig Kirchner(
Book
)
6 editions published in 2010 in German and held by 23 WorldCat member libraries worldwide
6 editions published in 2010 in German and held by 23 WorldCat member libraries worldwide
Der gesamte Briefwechsel : "Die absolute Wahrheit, so wie ich sie fühle" by
Ernst Ludwig Kirchner(
Book
)
4 editions published in 2010 in German and held by 18 WorldCat member libraries worldwide
4 editions published in 2010 in German and held by 18 WorldCat member libraries worldwide
Der gesamte Briefwechsel : "die absolute Wahrheit, so wie ich sie fühle" by
Ernst Ludwig Kirchner(
Book
)
3 editions published in 2010 in German and held by 12 WorldCat member libraries worldwide
3 editions published in 2010 in German and held by 12 WorldCat member libraries worldwide
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Associated Subjects
Algebraic spaces Categories (Mathematics) Coding theory Computer networksSecurity measures Computer science Computer scienceMathematics Computer security Cryptography Data encryption (Computer science) Data protection Data structures (Computer science) Geometry, Algebraic Homology theory Homotopy theory Mathematics Number theory Topology