Software security is one of the most considerable domains of software development. It provides a strong mechanism to manage and incorporate security features for precious estimation at design phase. The structural and behavioral design properties of classes, objects and their relationships are evaluated to develop metric for authorization. The assessment of security using the model is more appropriate and its validation signifies the valid impact of structural and functional information of

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... t oriented design software. The authorization quantification model is developed using multiple linear regression technique on object oriented design constructs. The applied statistical analysis on this study concludes its statistical significance remarked that calculated data is highly acceptable. A strong theoretical basis has been developed for designing the metrics required for complexity factors as well as security attributes.