Differential and Linear Cryptanalysis. Although the venerable Data Encryption Standard has been the workhorse of cryptography for nearly two decades two new attacks: differential linear cryptanalysis are putting DES to the test.

Color Quantization Using Octrees. Octree quantization is a color-quantization technique that's both space efficient fast. Dean discusses the algorithm then implements it in C.

Ramdomness and the Netscape Browser. No one was more surprised than Netscape Communications when a pair of computer-science students broke the Netscape encryption scheme. Ian and David describe how they attacked the popular Web browser and what they found out.