Standard Assumption (IMAGE) Optica Caption This image illustrates the standard assumption made in quantum cryptography, namely that the devices, such as photon sources and detectors, used by the honest parties, "Alice" and "Bob," are completely trusted (yellow boxes indicate the trusted region), whereas the channel connecting Alice and Bob may be controlled by an adversary. Credit Credit: Renato Renner. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.