A more server-siding scheme might be a better solution to privacy issues. As a result, information leakage can be eliminated and data security is ensured. However, privacy concerns arise whenever sensitive data Data encryption essay outsourced to the cloud.
However, the limited computational power on the user Data encryption essay and the high computational overhead precludes information security . Homomorphic encryption allows specific types of computations to be carried out on the corresponding cipher text. However, directly outsourcing the data vector or the query vector will violate the index privacy or the search privacy.
Thus, Homomorphic Encryption can be employed which enable to perform the operations on encrypted data without decrypting them. Jiadi Yu, Peng Lu, Yanmin Zhu and Guangtao Xue , formulates the privacy issue from the aspect of similarity relevance and scheme robustness and observation made that server-side ranking based on order-preserving encryption OPE inevitably leaks data privacy.
Security Analysis The Data encryption essay thing to be analyzed is that cloud server should not learn the content, either of the data files, searchable index and the search keyword queries.
Thus, storage of searchable index along with the encrypted data in the cloud optimizes speed and performance in finding relevant documents for a search query.
A series of searchable symmetric encryption SSE schemes had been used to enable search on cipher text. Namely, Boolean keyword search that support only keyword search operation on basis of Boolean itself. To reduce the computational burden on the user side, computing work should be made to done at the cloud service side, so it is necessary to choose an encryption scheme that guarantee the operability and security at the same time on server side.
Porter Stemmer Porter Stemmer is one of the algorithms that are used in information retrieval to reduce the size index files. There are UK writers just like me on hand, waiting to help you.
Although it has such a fine property, the original fully homomorphic encryption scheme, which employs ideal lattices over a polynomial ring , is too complicated and inefficient for practical utilization.
Thus, same keywords in different queries are independent to each other, which means that the keywords been retrieved are hidden; thus, the access pattern and search pattern are secure. Essay UK - http: Introduction Cloud computing is an emerging technology and promising pattern for data outsourcing and high quality data services.
Therefore, the original homomorphism in a full form to a simplified form that only supports integer operations, which allows more efficiency than the full form does. However, the limited computational power on the user side and the high computational overhead precludes information security.
Secondly, the cloud server should not learn the similarity relevance of terms or files so that the proposed system has high robustness. Along with sending the encrypted data over cloud, the data owner may also send the searchable index. To reduce the size of cipher text and the communication overhead, the original FHEI scheme must be modified to more flexible in order to meet the requirements to ensure the correctness of the decryption.
In the fully homomorphic encryption over the integers FHEI scheme , the approximate integer greatest common divisor GCD is used to provide sufficient security.
As shown in figure 1, when the cloud server receives a query consisting of multi keywords, it computes the scores Data encryption essay the encrypted index stored on cloud and then returns the encrypted scores of files to the data user.
Then, the data user gets the search result from the cloud server. Secondly, single keyword search that supports the search operation to be carried out based on a single keyword query and lastly, multi keyword search that enables searching of the data based on the multiple keyword queries.
About this resource This Computer Science essay was submitted to us by a student in order to help you with your studies. In order to ensure privacy of the personal information over the cloud, data owner must encrypt the data before uploading it to the Cloud provider.
Each of us is qualified to a high level in our area of expertise, and we can write you a fully researched, fully referenced complete original answer to your essay question. Maps double suffixes to single ones: However, the presence of sensitive data of users over the cloud such as emails, bank account details, health records, personal photos may cause privacy issues.
Cloud computing is a technology, which enable users to make use of the computational power and storage resources provided by a cloud service providers.
Traditional SSE schemes enable users to securely retrieve the cipher text, but these schemes supported only Boolean keyword search, That is, whether a keyword exists in a file or not, without considering the difference of relevance with the queried keyword of these files in the result .
Preventing the cloud from involving in ranking and entrusting all the work to the user is a natural way to avoid information leakage.Read this essay on Data Encryption. Come browse our large digital warehouse of free sample essays.
Get the knowledge you need in order to pass your classes and more. Only at ultimedescente.com". Data encryption ensures privacy of user’s data to some extent but it is compromised during the retrieval of data as per user request. Since, it requires decryption of the data by cloud service provider in order to search for a data among a huge collection of encrypted data that is stored over cloud.
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