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Title:
Steady: A Simple End-to-End Secure Logging System
Authors: Tobias Pulls, Rasmus Dahlberg
Abstract:We present Steady: an end-to-end secure logging system engineered to be simple in terms of design, implementation, and assumptions for real-world use. Steady gets its name from being based on a steady (heart)beat of events from a forward-secure device sent over an untrusted network through untrusted relays to a trusted collector. Properties include optional encryption and compression (with loss of confidentiality but significant gain in goodput), detection of tampering, relays that can function in unidirectional networks (e.g., as part of a data diode), cost-effective use of cloud services for relays, and publicly verifiable proofs of event authenticity. The design is formalized and security proven in the standard model. Our prototype implementation (about 2,200 loc) shows reliable goodput of over 1M events/s (about 160 MiB/s) for a realistic dataset with commodity hardware for a device on a GigE network using 16 MiB of memory connected to a relay running at Amazon EC2.
ePrint: https://eprint.iacr.org/2018/737
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