This book explains the development of cryptographic obfuscation, providing insight into the most important ideas and techniques. It will be a useful reference for researchers in cryptography and theoretical computer science.

Introduction.- Background.- Definitional Approaches.- Bootstrapping: From the Seed to the Flower.- Building Core-Obfuscators: In Search of a Seed.- Building Functional Encryption: In Search of a Seed.- iO Combiners and Universal Constructions.