Handbook of Applied Cryptography - Reference work available for free download (with restrictions) from the Web. The Munitions Maker Graphic - Campaign to distribute image (rsa2d.gif) in protest of ITAR regulations that treat encryption as munitions. Choosing a Good Password - Tips on choosing a difficult to crack password and pitfalls in password selection. RSA - Hacking and Cracking - Discusses security problems and possible attacks against the RSA cryptosystem. International Association for Cryptologic Research (IACR) - Non-profit scientific organisation intended to further research in cryptology. Cryptography FAQ - Ten part FAQ list that is essential reading for any newcomer to cryptography. Cryptography World - Introduction to cryptography, including concepts, key management and application. Adam Back's Homepage: Cypherspace - Find information on some cryptanalytic hacks, breaking weak cryptosystems and links to more cryptography related websites. International Cryptography Freedom - Links to cryptography related downloads and information from around the world. Deschall - Articles describing the first crack of a DES-encrypted message, with some source code and mailing list archives. Snake Oil FAQ - Guide to evaluating the quality and fitness for purpose of cryptography tools. Randomness and the Netscape Browser - Article about cracking the original Netscape encryption algorithm, and links to resources for generating crypto strength randomness. An Overview of Cryptography by Gary C. Kessler - Defines cryptographic terms and concepts, offers crypto scheme comparison, and provides some real world examples. Standard Cryptographic Algorithm Naming - Provides references for a collection of cryptographic algorithms, assigning each an ASCII name and zero or more aliases. Crypto Machines - Features machines and systems used in secure communications. Includes brief history on cryptography. A Cryptographic Compendium - Outline of the various types of cipher systems that have been used historically and the relationships between them. Crypto-Gram - Free monthly email newsletter covering developments in cryptography and other computer security issues.