SPARK Formal

The SPARK Formal project aims to develop a complete set of semantics of the SPARK language in Coq, for:

    - at the language level, ensuring the absence of ambiguity and the completeness of evaluation rules
    - at the tool level, ensuring the correct insertion of checks in the AST used for compilation and analysis

The formalization of SPARK also paves the way for the creation of proved toolchains for SPARK programs (a.k.a. “certified” toolchains in academia) such as CompCert.

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Interesting new UK conference

HIS 2014 is announced as “the UK conference for sharing information about the key challenges and recent developments in high integrity software engineering. This one day conference will be held in Bristol, UK on 23rd October 2014 and will feature presentations on current industrial experience as well as keynote talks from leading industry experts.”

An interesting program includes keynotes from Martyn Thomas and Harold Thimbleby and a number of international speakers. The talks are grouped into four main sessions:

    - Software Security
    - Software Safety
    - Applications
    - Languages and Technologies

More info and registration.

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Parallel Programming Languages Enable Safer Systems

Languages that use garbage collection pose tricky issues for military system developers. In this recent article COTS journal article, Tucker Taft looks at innovative new parallel programming techniques that offer a safer solution.
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ERTS 2014: Integrated and Simpler Systems

I attended last week the 7th edition of the congress on Embedded Real Time Software and Systems that takes place in Toulouse (France) every two years. It started with Joseph Sifakis inviting all of us to work on the integration of embedded systems with Internet, and the Engineering Executive Vice-President of Airbus, Charles Champion, describing the many future challenges of avionics and asking, maybe surprisingly, for simpler software and systems to meet these challenges.

At the software level, I see two important trends contributing to these goals: model-based development and formal methods. The former because it facilitates communication between systems and software engineers, at the right level of abstraction, the latter because it makes the verification of these ever larger and integrated systems tractable thanks to abstraction and automation. No surprise then that both were very much present in presentations at the conference. A difference with previous years was that many of these presentations were backed by large industrial case studies. For example, for model-based development, the use of MBD in the context of DO-178C at Airbus Military, and for formal methods, the use of Event-B for requirements verification at BAE Submarine. The most interesting trend for me was the combination of model-based development and formal methods to manage greater integration between systems. We described such a workflow in our paper on System to Software Integrity. I expect more of these in the next edition.

Another highlight of this conference for me was certification, with two sessions dedicated to New Trends in Certification, among which a majority of papers on formal methods (5 papers). It will be interesting in the years to come to follow progress on the convergence of certification domains on the issues of tool qualification and formal methods.

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Software Glitches: Why We Shouldn’t Put Up With Them

Robert Dewar discusses why software glitches are unacceptable in this day and age.

Software Glitches: Why We Shouldn’t Put Up With Them
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Muen Separation Kernel

The Institute for Internet Technologies and Applications at the University of Applied Science in Rapperswil (Switzerland) and AdaCore today announced a significant expansion of the Open Source software model into the domain of high-assurance systems with the preview release of the Muen Separation Kernel. The Muen Kernel enforces a strict and robust isolation of components to shield security-critical functions from vulnerable software running on the same physical system. To achieve the necessary level of trustworthiness, the Muen team used the SPARK language and toolset to formally prove the absence of run-time errors.

More info.
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Trusted Key Manager for IKEv2

The HSR University of Applied Sciences in Switzerland has implemented the TKM from scratch using the Ada programming language. The new Design-by-Contract feature of Ada 2012 has been used for the implementation of state machines, to augment the confidence of operation according to the specification. The TKM works in conjunction with the strongSwan IKEv2 daemon to provide key management services for IPsec.

Read the project report
Visit the TKM project page
Visit the strongSwan project page
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Sparkel Programming Language

Sparkel is a new parallel programming language inspired by the SPARK subset of Ada, and designed to support the development of inherently safe and secure, highly parallel applications that can be mapped to multicore, manycore, heterogeneous, or distributed architectures.

To learn more about Sparkel and to follow the project, please visit
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Ada for the C++ or Java Developer

This document will present the Ada language using terminology and examples that are familiar to developers that understand the C++ or Java languages.

To download the booklet, please visit this page

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Safe and Secure Software – An Invitation to Ada 2012

The aim of this booklet is to show how the study of Ada in general, and the features introduced by Ada 2005 and Ada 2012 in particular, can help anyone designing safe and secure software regardless of the programming language in which the software is eventually written. After all, successful implementers of safe and secure software write in the spirit of Ada in any language!

To download the booklet, please visit this page.

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