TY - CHAP N1 - 7th International Symposium, TGC 2012, Newcastle upon Tyne, UK, September 7-8, 2012, Revised Selected Papers ID - eprints2319 T2 - Trustworthy Global Computing EP - 96 Y1 - 2013/// TI - A type system for flexible role assignment in multiparty communicating systems AV - public UR - http://dx.doi.org/10.1007/978-3-642-41157-1_6 PB - Springer SN - 978-3-642-41157-1 A1 - Baltazar, Pedro A1 - Caires, Luis A1 - Vasconcelos, Vasco Thudichum A1 - Torres Vieira, Hugo SP - 82 N2 - Communication protocols in distributed systems often specify the roles of the parties involved in the communications, namely for enforcing security policies or task assignment purposes. Ensuring that implementations follow role-based protocol specifications is challenging, especially in scenarios found, e.g., in business processes and web applications, where multiple peers are involved, single peers impersonate several roles, or single roles are carried out by several peers. We present a type-based analysis for statically verifying role-based multi-party interactions, based on a simple ?-calculus model and prior work on conversation types. Our main result ensures that well-typed systems follow the role-based protocols prescribed by the types, including systems where roles are flexibly assigned to processes. T3 - Lecture Notes in Computer Science ER -