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- W4387673910 abstract "Replicated Data Types (RDTs) are a type of data structure that can be replicated over a network, where each replica can be kept (eventually) consistent with the other replicas. They are used in applications with intermittent network connectivity, since local (offline) edits can later be merged with the other replicas. Applications that want to use RDTs often have an inherent security component that restricts data access for certain clients. However, access control for RDTs is difficult to enforce for clients that are not running within a secure environment, e.g., web applications where the client-side software can be freely tampered with. In essence, an application cannot prevent a client from reading data which they are not supposed to read, and any malicious changes will also affect well-behaved clients. This paper proposes Secure RDTs (SRDTs), a data type that specifies role-based access control for offline-available JSON data. In brief, a trusted application server specifies a security policy based on roles with read and write privileges for certain fields of an SRDT. The server enforces read privileges by projecting the data and security policy to omit any non-readable fields for the user's given role, and it acts as an intermediary to enforce write privileges. The approach is presented as an operational semantics engineered in PLT Redex, which is validated by formal proofs and randomised testing in Redex to ensure that the formal specification is secure." @default.
- W4387673910 created "2023-10-17" @default.
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- W4387673910 date "2023-10-16" @default.
- W4387673910 modified "2023-10-17" @default.
- W4387673910 title "Secure RDTs: Enforcing Access Control Policies for Offline Available JSON Data" @default.
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- W4387673910 doi "https://doi.org/10.1145/3622802" @default.
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