- Snake Oil FAQ
- Guide to evaluating the quality and fitness for purpose of cryptography tools. - A Cryptographic Compendium - Outline of the various types of cipher systems that have been used historically and the relationships between them.
- Adam Back's Homepage: Cypherspace - Find information on some cryptanalytic hacks, breaking weak cryptosystems and links to more cryptography related websites.
- An Overview of Cryptography by Gary C. Kessler - Defines cryptographic terms and concepts, offers crypto scheme comparison, and provides some real world examples.
- Choosing a Good Password - Tips on choosing a difficult to crack password and pitfalls in password selection.
- Coderpunks - Little sister of the cypherpunk mailing list. Discussion of implementations of strong, robust cryptosystems.
- Crypto Machines - Features machines and systems used in secure communications. Includes brief history on cryptography.
- Crypto-Gram - Free monthly email newsletter covering developments in cryptography and other computer security issues.
- 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.
- CryptoMX Tools - Set of cryptography tools written entirely in JavaScript, designed to work on any computer with a JavaScript capable browser.
- Cyphernomicon - Tim May's CryptoNotes, and an introduction to the Cypherpunks.
- Cypherpunks - Group, with mailing list, that is interested in privacy and cryptography.
- Deschall - Articles describing the first crack of a DES-encrypted message, with some source code and mailing list archives.
- Frode Weierud's Cryptology Page - History of cryptography, cipher machines and their simulation, cryptanalysis and other code breaking techniques.
- Handbook of Applied Cryptography - Reference work available for free download (with restrictions) from the Web.
- International Association for Cryptologic Research (IACR) - Non-profit scientific organisation intended to further research in cryptology.
- International Cryptography Freedom - Links to cryptography related downloads and information from around the world.
- Randomness and the Netscape Browser - Article about cracking the original Netscape encryption algorithm, and links to resources for generating crypto strength randomness.
- RSA - Hacking and Cracking - Discusses security problems and possible attacks against the RSA cryptosystem.
- Standard Cryptographic Algorithm Naming - Provides references for a collection of cryptographic algorithms, assigning each an ASCII name and zero or more aliases.
- Strong Cryptography Links on the Internet - Dealing with cryptography, information security, cryptographers government, commercial, university, and personal sites, newsgroups, publications, programs and applications.
- The Cipher Challenge - History of a code cracking competition. Challenge details, how it was solved, winners, essays and photo gallery.
- The Munitions Maker Graphic - Campaign to distribute image (rsa2d.gif) in protest of ITAR regulations that treat encryption as munitions.
- Why Cryptography Is Harder Than It Looks - Essay on pitfalls of implementing and using secure systems.
