Abstract SAP HANA is widely used emerging relational database management system. Sensitive data is shared and retrieved through network. Existing cryptographic approach works with security techniques like Attribute Based Encryption, Cipher Text, Decentralized Approach, & Mediator approach. Multiple approaches enhances the security level but in dept individual approaches keens to enhance security level. In proposed approach, UCTD-ABE scheme is applied where User,... SAP HANA is widely used emerging relational database management system. Sensitive data is shared and retrieved through network. Existing cryptographic approach works with security techniques like Attribute Based Encryption, Cipher Text, Decentralized Approach, & Mediator approach. Multiple approaches enhances the security level but in dept individual approaches keens to enhance security level. In proposed approach, UCTD-ABE scheme is applied where User, Current data, Time and Date attributes are used to enhance the existing approach of Attribute Based Encryption. In proposed concept, all attributes are used based on situation. Accordingly logic will be applied. This situation based attribute selection and applied logics enhances the security approach in SAP HANA. Read More Read Less

Abstract Self-adaptation endows software with the ability to adjust its behavior according to the changes in its environment. It is an effective approach in dealing with many changing dynamics, such as ubiquitous computing spaces. However, adaptability will significantly complicate software implementation and brings great challenges to software engineering practices. This paper presents an engineering approach for self-adaptive software, which systematically enables the reuse of software... Self-adaptation endows software with the ability to adjust its behavior according to the changes in its environment. It is an effective approach in dealing with many changing dynamics, such as ubiquitous computing spaces. However, adaptability will significantly complicate software implementation and brings great challenges to software engineering practices. This paper presents an engineering approach for self-adaptive software, which systematically enables the reuse of software adaptation on three levels: software architecture, development process and run-time middleware. A novel conceptual model is proposed as the foundation of this work at first, in which each software entity can imitate the reacting/joining behavior pattern of the individuals in natural adaptive systems. And then, mainly based on the enhancement of component technology, this conceptual model is mapped into a practicable and reusable software architecture. A software factory with a model-driven development process definition and a middleware prototype supports the proposed architecture at runtime are presented. Several applications have been developed to validate the effectiveness and generality of our approach. A novel software engineering method for self-adaptive software is proposed in this papier, which systematically enables the reuse of software adaptation on three levels: software architecture, development process and run-time middleware. Read More Read Less

Abstract In view of the recent advances of communication and information technology along with the growing need for online networking, computer security has become a challenge to almost all the studies that have been carried out in this research axis. So far, various tools and mechanisms have been developed in order to guarantee a safety level up to the requirements of modern life. Among... In view of the recent advances of communication and information technology along with the growing need for online networking, computer security has become a challenge to almost all the studies that have been carried out in this research axis. So far, various tools and mechanisms have been developed in order to guarantee a safety level up to the requirements of modern life. Among these, intrusion detection and prevention systems (IDPS) tend to locate activities or abnormal behaviors suspect to be detrimental to the correct operation of the system. In this respect, this work targets the design and the realization of an IDPS inspired from natural immune systems. The study of biological systems along with the study of artificial intelligence have inspired a great deal of works, which have targeted the resolution of computer science problems, and has given rise to robust and effective methods by their natural function. The immune systems have aroused the interest of researchers in the intrusion detection field, taking into account the similarities of NIS (Natural Immune System) and IDPS objectives. Within the framework of this work, we conceived an IDPS inspired from natural immune system and implemented by using a directed approach. A platform was developed and tests were carried out in order to assess our system performances. Read More Read Less