Cryptography
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.
Cryptonomicon
Cryptography related articles, downloads, news, links and discussions.
Cypherpunks
Group, with mailing list, that is interested in privacy and cryptography.
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.
Home of HB9CUF
Free cryptographic tools: CryptoUP to secure and transport any kind of file; FindSR helps to analyze ciphertext.
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.
MD5 Reverse Lookup
Project to record and search for mappings of MD5 hashes to their original messages.
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