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	Handbook of Applied Cryptography - http://www.cacr.math.uwaterloo.ca/hac/ Reference work available for free download (with restrictions) from the Web.
	International Association for Cryptologic Research (IACR) - http://www.iacr.org/ Non-profit scientific organisation intended to further research in cryptology.
	Cryptography FAQ - http://www.faqs.org/faqs/cryptography-faq/ Ten part FAQ list that is essential reading for any newcomer to cryptography.
	Why Cryptography Is Harder Than It Looks - http://www.schneier.com/essay-037.html Essay on pitfalls of implementing and using secure systems.
	Snake Oil FAQ - http://www.interhack.net/people/cmcurtin/snake-oil-faq.html Guide to evaluating the quality and fitness for purpose of cryptography tools.

	Cryptography World - http://www.cryptographyworld.com Introduction to cryptography, including concepts, key management and application.
	Adam Back's Homepage: Cypherspace - http://cypherspace.org/adam/ Find information on some cryptanalytic hacks, breaking weak cryptosystems and links to more cryptography related websites.
	Deschall - http://www.interhack.net/projects/deschall/ Articles describing the first crack of a DES-encrypted message, with some source code and mailing list archives.
	International Cryptography Freedom - http://www.piracy.com Links to cryptography related downloads and information from around the world.
	Choosing a Good Password - http://www.cs.umd.edu/faq/Passwords.shtml Tips on choosing a difficult to crack password and pitfalls in password selection.

	The Cipher Challenge - http://www.simonsingh.net/Cipher_Challenge.html History of a code cracking competition. Challenge details, how it was solved, winners, essays and photo gallery.
	Frode Weierud's Cryptology Page - http://frode.home.cern.ch/frode/crypto/ History of cryptography, cipher machines and their simulation, cryptanalysis and other code breaking techniques.
	Randomness and the Netscape Browser - http://www.cs.berkeley.edu/~daw/netscape-randomness.html Article about cracking the original Netscape encryption algorithm, and links to resources for generating crypto strength randomness.
	Strong Cryptography Links on the Internet - http://www.c4i.org/erehwon/crypto.html Dealing with cryptography, information security, cryptographers government, commercial, university, and personal sites, newsgroups, publications, programs and applications.
	An Overview of Cryptography by Gary C. Kessler - http://www.garykessler.net/library/crypto.html Defines cryptographic terms and concepts, offers crypto scheme comparison, and provides some real world examples.

	CryptoMX Tools - http://cryptomx.sourceforge.net Set of cryptography tools written entirely in JavaScript, designed to work on any computer with a JavaScript capable browser.
	A Cryptographic Compendium - http://www.quadibloc.com/crypto/intro.htm Outline of the various types of cipher systems that have been used historically and the relationships between them.
	Cyphernomicon - http://www2.pro-ns.net/~crypto/cyphernomicon.html Tim May's CryptoNotes, and an introduction to the Cypherpunks.
	Crypto Machines - http://www.jproc.ca/crypto/ Features machines and systems used in secure communications. Includes brief history on cryptography.
	The Munitions Maker Graphic - http://online.offshore.com.ai/arms-trafficker/rsa2d.html Campaign to distribute image (rsa2d.gif) in protest of ITAR regulations that treat encryption as munitions.

	Standard Cryptographic Algorithm Naming - http://www.users.zetnet.co.uk/hopwood/crypto/scan/ Provides references for a collection of cryptographic algorithms, assigning each an ASCII name and zero or more aliases.
	MD5 Reverse Lookup - http://md5.crysm.net Project to record and search for mappings of MD5 hashes to their original messages.
	Cypherpunks - ftp://ftp.csua.berkeley.edu/pub/cypherpunks/mailing_list/index.html Group, with mailing list, that is interested in privacy and cryptography.
	Coderpunks - http://home.att.net/~lewis.mccarthy/InfosecProjects/Coderpunks/ Little sister of the cypherpunk mailing list. Discussion of implementations of strong, robust cryptosystems.
	RSA - Hacking and Cracking - http://members.tripod.com/irish_ronan/rsa/ Discusses security problems and possible attacks against the RSA cryptosystem.

Crypto-Gram - http://www.counterpane.com/crypto-gram.html
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