Cloud computing has become the most common phenomenon in the recent years. More and more cloud services have flourished all around the world such as computing resource, storage space outsourcing and different kinds of software applications. For many reasons like low cost, efficiency, convenience, better connectivity and etc., user often stores his data on remote servers. Since more servers are public, there exist a lot of risks for the data in the transition process, the user ensures the privacy of his data by storing it in encrypted form, then he can search the encrypted data and retrieve it. The first effort of searching encrypted data by keyword was tackled by Song, Wagner and Perrig cite{s1}. To securely search over encrypted data, searchable encryption schemes have been proposed in recent years cite{b2,b3,b5,c2,c4,g1,w2}, which can be divided into two schemes: symmetric searchable encryption (SSE) and asymmetric searchable encryption (ASE). To perform a search on a dataset, an user creates an index of keywords listed in the documents and later on executes the search on the index in a way that allows the server to retrieve the documents contain a certain keyword instead of retrieving all the encrypted documents back which is fully impractical solution in cloud computing scenarios. Recent refinements and extensions to this scheme are given in cite{g1, w2}. The drawback of all the follow-up works is that they only allow the remote server to retrieve the documents that
Assuming a large collections of files and documents and Data user in a external cloud environment. It permit the secure Multi-keyword search and it returns the relevant documents in a order to the search request. As shown in TABLE 3, here we compare the functionalities of cash’s scheme [10],Cao’s scheme [11] and Naveed’s scheme[13].
One of the prominent works to accelerate the search over encrypted keywords in the public-key setting is deterministic encryption introduced by Bellare et al. An encryption scheme is deterministic if the encryption algorithm is deterministic. Bellare et al. focus on enabling search over encrypted keywords to be as efficient as the search for unencrypted keywords, such that a ciphertext containing a given keyword can be retrieved in time complexity logarithmic in the total number of all ciphertexts. This is reasonable because the encrypted keywords can form a tree-like structure when stored according to their binary values. Search on encrypted data has been extensively investigated in recent years. From a cryptographic perspective, the existing works fall into two categories, i.e., symmetric searchable encryption and public-key searchable encryption.
Reordering the economics of software, cloud computing is alleviating many of the capital expenses (CAPEX), inflexibility of previous-generation software platforms, and inability of on-premise applications to be customized on an ongoing basis to evolving customer needs. These are the three top factors of many that are driving the adoption of cloud computing technologies in enterprises today. Implicit in the entire series of critical success factors that are forcing the migration of on-premise to cloud computing platforms is the greater agility and speed the latter platform offers. Line-of-business executives today are increasingly defining the priorities of IT departments, often also defining budgeting cycles as well. Their primary concern is ability able to quickly get up and running on a new enterprise application, integrating its workflows into existing legacy and 3rd party systems, databases and applications, while also getting the performance gains of the new software (Bentley, 2008). Due to these factors cloud computing is evolving rapidly, changing the economics of enterprise software especially. Large-scale systems are most often purchased using Capital Expense (CAPEX) budgeting processes that often take several months ot over a year to complete. Often CAPEX-based spending on enterprise software also requires the board of directors for a company to authorize spending large amounts on new
Bowles goes further via looking at numerous cloud companies and declaring their importance in cloud computing. Bowles indicates that there 's a bright destiny in cloud computing inside the ending of the bankruptcy. He states: “an increasing number of, we will find that our information and packages aren 't residing on our personal computers however alternatively somewhere in our on-line world” (Chap. 9 summary).
Cloud computing is a set of Information technology services that are given to a client over a network on a leased basis and with the capacity to scale up or down their administration prerequisites. Typically distributed computing organizations are passed on by an outcast supplier who claims the structure. It central focuses to say however several fuse flexibility, quality, versatility, adequacy and outsourcing non-focus works out. Distributed computing offers an innovative arrangement of activity for relationship to get IT advantages without blunt endeavor. Despite the potential augmentations achieved from the distributed computing, the affiliations are subsiding in enduring it due to security issues and challenges joined with it.
system is running on the internet even the internet security problems can also be found in the
over the Internet. It is a ground-breaking architecture, visualized as what may be the future of
The current scenario in cloud computing has evolved from traditional need of cloud platforms as a single platform of data storage and virtual machines to Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS). Due to growth in availability of number of cloud providers in the market, providers are facing intense pressure of competition for providing best prices and complement it with the best Quality of Service(QoS). QoS is dependent on various factors like latency, acceptance rate as well as reliability. Cloud providers must meet all these requirements and keeping the running costs as low as possible. The pattern of access to these services varies depending on the time of access.
In practice, the satisfaction of users can be relatively assured with certain relevant features of the Cloud. These features of the Cloud are essential to enable services that actually represent the Cloud computing model. These features include: elasticity; scalability; customization; self-service; and pay-per use.
Recipients of instantaneous access to data anywhere, anytime, at any online terminal, are known as cloud users, as the avenue for experiencing these luxuries is cloud computing. This can be achieved by using free services such as Drive offered by Google, or iCloud from Apple, or via OneDrive from Microsoft. Much like a music library on a personal computer cloud computing stores data, all the while making it accessible everywhere. Instead of having to be at a physical machine to access the data, one can place this data into a cloud that can be accessed anytime, online, when they feel like it. Even more so this is great in everyday life scenarios. For instance, one can take photos from their iPhone on a day hike in the
Cloud computing is a topic of which much is assumed. The average person recognizes the term “cloud computing” as having to do with their storage from their iPad or iPhone on the online storage area which syncs their Apple devices to their computer. This common cloud is called the iCloud. That is where common knowledge ends about this topic. However, upon further exploration, a deeper understanding is gained with greater explanation, and it is realized that cloud computing is something that is used all of the time on many levels of everyday technology. While the terminology remains cryptic to the mind of most people, the concepts behind the practical uses of cloud computing become quite clear. It is relatable and understandable. Upon this revelation, the iCloud is recognized as the tip of the preverbal iceberg when speaking about cloud computing. It is important to discuss and further understand the many types of cloud computing as well as the various applications to life through technology. This affects how information is stored online, computers are protected, information is secured, emails are processed, and many other factors that are taken for granted in the world of technology. Cloud computing is a general term used to describe how information is stored, utilized, and accessed over the internet. There is no cloud, but the word cloud gives the connotation of an abstract place which is known to exist but is too vast to touch or contain (Griffith,
Information can be in a physical or electronic form. When it is stored in computer it is called as Data. Collection of processed data then called as Information. Information Management is a methodical approach of managing information using technology to collect, process and concise information. These days we have lot of information available stored in different formats and places. The rise of social media, smartphones and tablets are creating urgent information management in the IT industry. Unfortunately, most organisations do not have good IT infrastructure to deal with large amount of data and as result IT professionals are under pressure to upgrade the infrastructure, processes and technology to meet the demand of the growing information with efficient management. For many organisations, the answer to the above challenges can be found in the Cloud.
the ability to use applications on Internet that store and protect data while providing a service
On-Call technician – A large portion of the administration suppliers over the table nothing help with their paid arrangements along these lines you’ll never a chance to be alone. In you do need a portion help you could employ a technician or a school learner in as minimal similarly as $25 for every hour.
Thinking about the practical trouble of privacy retaining records sharing system primarily based on public cloud storage which calls for a statistics proprietor to distribute a big wide variety of keys to users to permit them to access his/her files, we for the first time endorse the idea of key-mixture searchable encryption (KASE) and assemble a concrete KASE scheme. Both analysis and evaluation results verify that our work can provide an powerful solution to building practical records sharing system based totally on public cloud garage.