An evidence generation model for web services

As multi-participant transactions migrate to web services, there is a potential for some of these parties to not fulfill their obligations or to achieve unintended objectives. Preserving evidence of service behavior of all participating actors can resolve such shortcomings. In order to achieve that, we propose a three-layered framework to preserve evidence of service behaviors in a non-refutable way. The lowest layer of our framework that preserves evidence of pair-wise participant using cryptographically secured forensic web services (FWS). The second layer uses this pair-wise evidence to derive evidence of complex actions and the top generate evidence of complex transactional behavior.