High integrity software

High-integrity software is software whose failure may cause serious damage with possible "life-threatening consequences". "Integrity is important as it demonstrates the safety, security, and maintainability of ... code." Examples of high-integrity software are nuclear reactor control, avionics software, automotive safety-critical software and process control software.

A number of standards are applicable to high-integrity software, including:

• DO-178C, Software Considerations in Airborne Systems and Equipment Certification
• CENELEC EN 50128, Railway applications – Communication, signalling and processing systems - Software for railway control and protection systems
• 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"

• Safety-critical system
• High availability software
• Formal methods
• Software of unknown pedigree

• Boulanger, Jean-Louis (13 April 2015). CENELEC 50128 and IEC 62279 Standards. John R. Wiley and Sons. ISBN 978-1-84821-634-1.
• Winter, Victor L.; Bhattacharya, Sourav, eds. (2001). High Integrity Software. Springer Science+Business Media, LLC. ISBN 978-1-4613-5530-4. Retrieved Feb 14, 2022.
• Wallace, Dolores R.; Ippolito, Laura M.; Kuhn, D. Richard (1992). High Integrity Software Standards and Guidelines (PDF). National Institute of Standards and Technology. Retrieved Feb 15, 2022.