Welschenbach Cryptography in C and C++

1. Auflage 2001
ISBN: 978-1-4302-1157-0
Verlag: APRESS
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 432 Seiten, eBook

Cryptography in C and C++ mainly focuses on the practical aspects involved in implementing public key cryptography methods, such as the RSA algorithm that was released from patent protection. It also gives both a technical overview and an implementation of the Rijndael algorithm that was selected as the Advanced Encryption Standard by the U.S. government. Author Michael Welschenbach avoids complexities by explaining cryptography and its mathematical basis in terms a programmer can easily understand. This book offers a comprehensive yet relentlessly practical overview of the fundamentals of modern cryptography. It contains a wide-ranging library of code in C and C++, including the RSA algorithm, completed by an extensive Test Suite that proves that the code works correctly. Readers will learn, step by step, how to implement a platform-independent library for the all-important multiprecision arithmetic used in modern cryptography. This is followed by an implementation of the cryptographic algorithms themselves.The CD-ROM includes all the programs presented in the book, x86 assembler programs for basic arithmetical operations, implementations of the new Rijndael Advanced Encryption Standard algorithm in both C and C++, and more.

Zielgruppe

Professional/practitioner

Autoren/Hrsg.

Welschenbach, Michael

Inhaltsverzeichnis

I Arithmetic and Number Theory in C.- 1 Introduction.- 2 Number Formats: The Representation of Large Numbers in C.- 3 Interface Semantics.- 4 The Fundamental Operations.- 5 Modular Arithmetic: Calculating with Residue Classes.- 6 Where All Roads Meet: Modular Exponentiation.- 7 Bitwise and Logical Functions.- 8 Input, Output, Assignment, Conversion.- 9 Dynamic Registers.- 10 Basic Number-Theoretic Functions.- 11 Large Random Numbers.- 12 Strategies for Testing LINT.- II Arithmetic in C++ with the Class LINT.- 13 Let C++ Simplify Your Life.- 14 The LINT Public Interface: Members and Friends.- 15 Error Handling.- 16 An Application Example: The RSA Cryptosystem.- 17 Do It Yourself: Test LINT.- 18 Approaches for Further Extensions.- 19 Rijndael: A Successor to the Data Encryption Standard.- III Appendices.- A Directory of C Functions.- A.1 Input/Output, Assignment, Conversions, Comparisons.- A.2 Basic Calculations.- A.3 Modular Arithmetic.- A.4 Bitwise Operations.- A.5 Number-Theoretic Functions.- A.6 Generation of Pseudorandom Numbers.- A.7 Register Management.- B Directory of C++ Functions.- B.1 Input/Output, Conversion, Comparison: Member Functions.- B.2 Input/Output, Conversion, Comparison: Friend Functions.- B.3 Basic Operations: Member Functions.- B.4 Basic Operations: Friend Functions.- B.5 Modular Arithmetic: Member Functions.- B.6 Modular Arithmetic: Friend Functions.- B.7 Bitwise Operations: Member Functions.- B.8 Bitwise Operations: Friend Functions.- B.9 Number-Theoretic Member Functions.- B.10 Number-Theoretic Friend Functions.- B.11 Generation of Pseudorandom Numbers.- B.12 Miscellaneous Functions.- C Macros.- C.1 Error Codes and Status Values.- C.2 Additional Constants.- C.3 Macros with Parameters.- D Calculation Times.- E Notation.- F Arithmetic and Number-Theoretic Packages.- References.

Über Autor(innen)

Michael Welschenbach works for SRC Security Research & Consulting GmbH in Bonn, Germany. He graduated with a master's degree in mathematics from the University of Cologne, and has extensive experience in both pure and applied cryptological research. Currently, his favorite programming languages are C and C++. When not working, he enjoys spending time with his wife and two sons, programming, reading, and playing music.