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High-integrity software is software whose failure may cause serious damage with possible "life-threatening consequences."[citation needed] "Integrity is important as it demonstrates the safety, security, and maintainability of... code."[1] Examples of high-integrity software are nuclear reactor control, avionics software, automotive safety-critical software and process control software.[2]
[H]igh integrity means that the code:
Does what it should.
Can be tested.
Has security features.
Lacks security vulnerabilities.
Is easy to understand and follow logically.
Is easy to edit and upgrade without introducing new errors.[1]
A number of standards are applicable to high-integrity software, including:
DO-178C, Software Considerations in Airborne Systems and Equipment Certification[3]
CENELEC EN 50128, Railway applications - Communication, signalling and processing systems - Software for railway control and protection systems[4]
IEC 61508, Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems (E/E/PE, or E/E/PES)
ISO 26262, Road Vehicles - Functional Safety (especially 'part 6' of the standard, which is titled "Product development at the software level"
^ ab"What Is Software Integrity? Overview + Software Integrity Best Practices". perforce.com. Retrieved Feb 15, 2022.
^Sennett, C.T. (2012). High-Integrity Software. Springer Science & Business Media. p. 1. ISBN 978-1-4684-5777-3. Retrieved Feb 14, 2022.
^"Developing DO-178B/C Compliant Software for Airborne Systems" (PDF). Parasoft. Retrieved Feb 14, 2022.
^European Committee for Electrotechnical Standardization (CENELEC). "CENELEC - EN 50128". Engineering360. Retrieved Feb 14, 2022.
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