Rimba, P., Zhu, L., Bass, L., Kuz, I., & Reeves, S. (2015). Composing patterns to construct secure systems. In Proc 11th European Dependable Computing Conference (pp. 213–224). Paris, France: IEEE. http://doi.org/10.1109/EDCC.2015.12
Permanent Research Commons link: https://hdl.handle.net/10289/9881
Building secure applications requires significant expertise. Secure platforms and security patterns have been proposed to alleviate this problem. However, correctly applying patterns to use platform features is still highly expertise-dependent. Patterns are informal and there is a gap between them and platform features. We propose the concept of reusable verified design fragments, which package security patterns and platform features and are verified to provide assurance about their security properties. Design fragments can be composed through four primitive tactics. The verification of the composed design against desired security properties is presented in an assurance case. We demonstrate our approach by securing a Continuous Deployment pipeline and show that the tactics are sufficient to compose design fragments into a secure system. Finally, we formally define composition tactics, which are intended to support the development of systems that are secure by construction.
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