This book constitutes the refereed proceedings of the 5th Provable Security Conference held in in Xi''an, China, in October 2011. The 22 full papers presented together with 4 short papers and 2 invited talks were carefully reviewed and selected from 75 submissions. The papers are divided in topical sections on cryptographic primitives; encryption; cryptographic protocols; security models and framework; and key agreement.

This book constitutes the refereed proceedings of the 5th Provable Security Conference held in in Xi''an, China, in October 2011. The 22 full papers presented together with 4 short papers and 2 invited talks were carefully reviewed and selected from 75 submissions. The papers are divided in topical sections on cryptographic primitives; encryption; cryptographic protocols; security models and framework; and key agreement.