Privacy Calculus: Maude implementation

Philippou and Kouzapas have proposed a privacy-related framework, consisting of

1. a variant of the π-calculus, called Privacy Calculus, that describes the interactions of processes,
2. a privacy policy language,
3. a type system that serves to check whether Privacy Calculus processes respect privacy policies.

The file privacy.maude contains an executable implementation in the programming/specification language Maude of a version of the Privacy Calculus, along with its associated privacy policy language and type checker. The file example-sales.maude includes a simple example of how the implementation can be used.

Compared to v0.1, this version:

• adds a system module with the operational semantics of Privacy Calculus, thus enabling the execution of processes,
• uses CINNI for handling name binding in Privacy Calculus terms,
• simplifies the syntax of Privacy Calculus terms,
• adds a compatible check for checking compliance of a Privacy Calculus system to a privacy policy given a Γ-Environment,
• splits the code into more modules,
• renames some sorts (most importantly, context variables are renamed to private data types).