| Why Cryptography Is Harder Than It Looks Essay on pitfalls of implementing and using secure systems. | |
| The Munitions Maker Graphic Campaign to distribute image (rsa2d.gif) in protest of ITAR regulations that treat encryption as munitions. | |
| The Cipher Challenge History of a code cracking competition. Challenge details, how it was solved, winners, essays and photo gallery. | |
| Strong Cryptography Links on the Internet Dealing with cryptography, information security, cryptographers government, commercial, university, and personal sites, newsgroups, publications, programs and applications. | |
| Standard Cryptographic Algorithm Naming Provides references for a collection of cryptographic algorithms, assigning each an ASCII name and zero or more aliases. | |
| Snake Oil FAQ Guide to evaluating the quality and fitness for purpose of cryptography tools. | |
| RSA - Hacking and Cracking Discusses security problems and possible attacks against the RSA cryptosystem. | |
| MD5 Reverse Lookup Project to record and search for mappings of MD5 hashes to their original messages. | |
| International Cryptography Freedom Links to cryptography related downloads and information from around the world. | |
| International Association for Cryptologic Research (IACR) Non-profit scientific organisation intended to further research in cryptology. | |
| Handbook of Applied Cryptography Reference work available for free download (with restrictions) from the Web. | |
| Frode Weierud's Cryptology Page History of cryptography, cipher machines and their simulation, cryptanalysis and other code breaking techniques. | |
| Deschall Articles describing the first crack of a DES-encrypted message, with some source code and mailing list archives. | |
| Cyphernomicon Tim May's CryptoNotes, and an introduction to the Cypherpunks. | |
| Cryptonomicon Cryptography related articles, downloads, news, links and discussions. | |
| CryptoMX Tools Set of cryptography tools written entirely in JavaScript, designed to work on any computer with a JavaScript capable browser. | |
| Cryptography World Introduction to cryptography, including concepts, key management and application. | |
| Cryptography FAQ Ten part FAQ list that is essential reading for any newcomer to cryptography. | |
| Crypto-Gram Free monthly email newsletter covering developments in cryptography and other computer security issues. | |
| Crypto Machines Features machines and systems used in secure communications. Includes brief history on cryptography. | |
