Privacy and Recovery in Composite Web Service Transactions
Rattikorn Hewett, Phongphun Kijsanayothin · International Journal for Infonomics · 2010
Today's numerous online transactions are implemented as composite web services in various domains including business, healthcare, government and education.This paper addresses privacy and recovery issues in composite web service transactions.In particular, we propose an intelligent semiautomated privacy-aware approach to efficiently building an appropriate composite web service along with a recovery mechanism to provide protection against privacy and service execution failures in the transactions.Our proposed approach aims to satisfy service I/O requirements using a minimum number of services with minimal information leakage and maximal compliance with a customer's privacy preferences and trust (in service providers when available).The paper describes details of the proposed approach and illustrates its use that exploits generic knowledge about types and sensitivity levels of information, together with specific knowledge about customer privacy preferences and trusts on certain providers.By using privacy-aware contingency and various types of compensation, the recovery mechanism provides potentials to maximize forward recovery from failed transaction services.