VERONICA: Expressive and Precise Concurrent Information Flow Security (Extended Version with Technical Appendices)

01/30/2020
by   Daniel Schoepe, et al.
0

Methods for proving that concurrent software does not leak its secrets has remained an active topic of research for at least the past four decades. Despite an impressive array of work, the present situation remains highly unsatisfactory. With contemporary compositional proof methods one is forced to choose between expressiveness (the ability to reason about a wide variety of security policies), on the one hand, and precision (the ability to reason about complex thread interactions and program behaviours), on the other. Achieving both is essential and, we argue, requires a new style of compositional reasoning. We present VERONICA, the first program logic for proving concurrent programs information flow secure that supports compositional, high-precision reasoning about a wide range of security policies and program behaviours (e.g. expressive de-classification, value-dependent classification, secret-dependent branching). Just as importantly, VERONICA embodies a new approach for engineering such logics that can be re-used elsewhere, called decoupled functional correctness (DFC). DFC leads to a simple and clean logic, even while achieving this unprecedented combination of features. We demonstrate the virtues and versatility of VERONICA by verifying a range of example programs, beyond the reach of prior methods.

READ FULL TEXT

Authors

page 1

page 2

page 3

page 4

09/08/2021

SecRSL: Security Separation Logic for C11 Release-Acquire Concurrency (Extended version with technical appendices)

We present Security Relaxed Separation Logic (SecRSL), a separation logi...
07/01/2019

Verifying that a compiler preserves concurrent value-dependent information-flow security

It is common to prove by reasoning over source code that programs do not...
10/02/2019

Compositional Non-Interference for Fine-Grained Concurrent Programs

We present SeLoC: a relational separation logic for verifying non-interf...
01/17/2019

TaDA Live: Compositional Reasoning for Termination of Fine-grained Concurrent Programs

We introduce TaDA Live, a separation logic for reasoning compositionally...
11/09/2017

Go with the Flow: Compositional Abstractions for Concurrent Data Structures (Extended Version)

Concurrent separation logics have helped to significantly simplify corre...
03/03/2021

An Axiomatic Approach to Detect Information Leaks in Concurrent Programs

Realizing flow security in a concurrent environment is extremely challen...
10/27/2020

Verified Secure Compilation for Mixed-Sensitivity Concurrent Programs

Proving only over source code that programs do not leak sensitive data l...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.