Cryptography in C and C++

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.

Arithmetic and Number Theory in C.- Number Formats: The Representation of Large Numbers in C.- Interface Semantics.- The Fundamental Operations.- Modular Arithmetic: Calculating with Residue Classes.- Where All Roads Meet: Modular Exponentiation.- Bitwise and Logical Functions.- Input, Output, Assignment, Conversion.- Dynamic Registers.- Basic Number-Theoretic Functions.- Rijndael: A Successor.- Large Random Numbers.- Strategies for Testing LINT.- Arithmetic in C++ with the Class LINT.- Let C++ Simplify Your Life.- The LINT Public Interface: Members and Friends.- Error Handling.- An Application Example: The RSA Cryptosystem.- Do It Yourself: Test LINT.- Approaches for Further Extensions.