Gary Kessler, a computer networking professor at Champlain College, is the author of this online introduction to cryptography. The material covers three main types of encryption and their applications, trust models, cryptographic algorithms, and much more. One of the most common areas that employs encryption techniques is the Internet, where it allows users to safely transmit private information...

The Cryptographic Toolkit is being developed by a subgroup of the National Institute of Standards and Technology (NIST), whos members work to implement and promote cryptographic technologies and efficient practices. The purpose of the toolkit is to "enable US Government agencies and others to select cryptographic security components and functionality for protecting their data, communications, and...

The Centre for Applied Cryptographic Research at the University of Waterloo, Ontario, Canada and publishers of the Handbook of Applied Cryptography, CRC Press, have recently granted free online access to all chapters of the handbook (.pdf). Written by Alfred J. Menezes, Paul C. van Oorschot, and Scott A. Vanstone, this outstanding resource begins with an overview of cryptography before launching...