Niels Ferguson
Niels Ferguson is a Dutch cryptographic engineer and consultant at MacFergus (http://www.macfergus.com/). Publications: Bruce Schneier, John Kelsey, Doug Whiting, David Wagner, Chris Hall, Niels Ferguson — The Twofish Encryption Algorithm ISBN 0471223573 Niels Ferguson, Bruce Schneier — Practical Cryptography ISBN 0471223573