As is common practice in research, many new cryptographic techniques
have been developed to tackle either a theoretical question or
foreseeing a soon to become reality application. Cloud computing is one
of these new areas, where cryptography is expected to unveil its power
by bringing striking new features to the cloud. This resource offers an
overview of the possibilities of crytography for protecting data and
identity information, much beyond well-known cryptographic primitives
such as encryption or digital signatures.