2014, Vol.10, No.1

Journal of Software Assessment and Valuation 2023 KCI Impact Factor : 0.35

pISSN : 2092-8114 / eISSN : 2733-4384
https://journal.kci.go.kr/ksavs

This study examines specific changes that should be made to improve the appraisal fee estimation method as well as the other factors in line with it. This study finds the main fault, with providers of appraisal services, for limiting the efforts made so far to improve appraisal and concludes that plans for improvement can be effectively implemented only when service providers acknowledge such. This study also aims to suggest specific improvements factors in the appraisal feel estimation method, particularly as the current formula is out of date and fails to reflect the changes that have occurred since its conception.

By an unclear requirements of SW business and change in the business, quality deterioration of SW business and SW withdrawal phenomenon of advanced human resources occurs frequently. Therefore, to prevent ecosystem of SW industry to be weakening, and to reduce the risk of information technology business, to improve the quality of business and professional business, it's time advancement scheme of establishment is required. The SW non turn-key projects are divided into requirements and development business, in order PMO to allow integrated management of business, to derive a clear requirement, we have developed successful SW business promotion. To simplify the risk of acquisition management that occur in system integration, the SW non turn-key projects management has been established and enforced mainly the United States, and Japan, other industries. In this paper, we will be able to take advantage of the variety as basic data for the SW non turn-key projects by benchmarking the case of other industries and the case of overseas.

In this paper, we propose a method for protecting Android applications against reverse engineering attacks. In this method, the server encrypts the original executable code (DEX) included in an APK file, inserts into the APK file a stub code that decrypts the encrypted DEX later at run-time, and distributes the modified APK file. The stub code includes an integrity validation code to detect attacks on itself. When a user installs and executes the APK file, the stub code verifies the integrity of itself, decrypts the encrypted DEX, and loads it dynamically to execute. Since the original DEX is distributed as an encrypted one, we can effectively protect the intellectual property. Further, by verifying the integrity of the stub code, we can prevent malicious users from bypassing our method. We applied the method to 15 Android apps, and evaluated its effectiveness. We confirmed that 13 out of them operates normally.