Applying Formal Methods to Design of Migrator Component of Data Masking Software

Developing defect free design of software systems is an important problem. This is because of high cost incurred due to failure of incorrectly designed software. In this paper, we demonstrate development of software design by applying correct by construction semantics. We combine Symbolic Execution technique with Hoare Logic to develop defect free design of migrator component created for Data Masking Software of TCS. The basic functionality of migrator component is to migrate settings from the old DataMasker product to new DataPlus product. This requires development of correct mapping and processing of Intermediate Representations of these products. After migrating settings, we also validate the functionality of migrator component with minimal testing to ensure correctness of design. Thus, our work shows effectiveness of formal methods to develop high quality design of industry strength software.1