The model and method of trustworthiness level evaluation for software product

With the wide application of trustworthy software, the trustworthiness and trustworthiness level have become the important issues concerned by users and software manufacturers. After analyzing the connotation of software trustworthiness and extending the trustworthy attribute model from the perspective of trustworthiness measurement, this paper builds a trustworthiness evaluation model for software product with four-layer structure, and analyzes the key parameters in model and the trustworthiness level of software product. Based on the evaluation model, the paper proposes an evaluation process model of trustworthiness for software product, which can automatically realize the trustworthiness level evaluation for software product, and describes the detailed evaluation flow. The paper takes the trustworthiness level evaluation of monitoring software product of aircraft engine for example to explain the application of the model and method.