Dependable and secure data storage in wireless ad hoc networks: an assessment of DS2

DS2 is a dependable and secure data storage for mobile, wireless networks based on a peer-to-peer paradigm. DS2 provides support to create and share files under a write-once model, and ensures data confidentiality and de-pendability by encoding files in a Redundant Residue Number System. The pa-per analyzes the code efficiency of DS2 using a set of moduli allowing for effi-cient encoding and decoding procedures based on single precision arithmetic, and discusses the security issues. The comparison of DS2 with the Information Dispersal Algorithm approach (IDA) shows that DS2 features security features which are not provided by IDA, while the two approaches are comparable from the viewpoint of code efficiency and encoding/decoding complexity.