Attribute-Based Encryption for Access of Secured Data in Cloud Storage (original) (raw)
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Fastest Access of Secured Data in Cloud storage by using Attribute-based Encryption
International Journal of Computer Applications, 2015
Cloud security is the most critical task while considering its working environment, i.e. outsourced, distributed and utility based. In such cases making the users data confidential, increases the trust over the system. Also the security procedure does not make the availability affected in any ways. The users of these kind of systems is always retained the services and securities preliminaries with respect to the data itself. As the cloud user can access its data frequently and if here some encryption is used which requires decryption and the repetitive process continues to increase the overheads. It requires some mechanism in which encryption is performed and if the user requires to perform some operations on secure file without decrypting it can be fulfilled. Thus homomorphic encryption lets the user facilitates about the performing operations on encrypted data which reduces the complexity of confidentiality operations. Also to prevent Cloud Servers from being able to learn both the data file contents and user access privilege information used to generate key along with the fastest access of secured data by using Attribute-based encryption (ABE).
Control Data on Cloud using Attribute- Based Encryption Technique
Cloud computing is revolutionary computing paradigm which enables flexible on-demand and low-cost usage of computing resources. But this Advantages contain different security problem such as. Badly configured server can lead to unauthorized access. Ciphertext–policy attribute based encryption(CP-ABE)is a promising cryptographic primitive for fine-grained access control of shared data. A user is able to decrypt a ciphertext if and only if his attributes satisfy the ciphertext access structure. In this paper we use A secure server plus application. this application provides a protected foundation for hosting your Web applications, and Web server configuration which plays a critical role in your Web application's security. Badly configured server can lead to unauthorized access. This system provides bidirectional encryption of communications between a client and server, which protects against eavesdropping and tampering with and/or forging the contents of the communication. As compared to existing schemes, our proposed scheme provide security for website account and sensitive information.
A Survey Report on Attribute Based Encryption Methodologies to Secure Cloud Storage
Due to reliability, there are millions of the uses of the cloud storages. So clouds are widely developing field for various purposes. Many cloud hosts are providing services to different clients for their data. Due to disaster management cloud can be used as trustworthy storage mechanism. For such cloud storages encryption is done many a ways for securing data. The attribute based encryption is the method to encrypt the contents. This paper discusses the attribute based encryption method for the cloud storages. The method is also used to hide identity of the user that means the anonymous authentication can be implemented only by use of attributes.
Technology a Survey on Attribute Based Encryption Techniques in Cloud Computing
2015
Cloud computing is an emerging computing paradigm, enabling users to store their data remotely in a server and to provide services on-demand. In cloud computing, cloud users and cloud service providers are almost clear from different trust domains. The critical issues for remote data storage are data security and privacy. A secure user enforced the data access control and that mechanism must be provided before the cloud users have liberty to outsource delicate data to cloud for storage. With the emergence of sharing personal data on cloud servers, it is essential to acquire an efficient encryption system with a fine-grained access control to encrypt outsourced data. Attribute-Based Encryption is a public key based encryption that enables access control over encrypted data using access policies and ascribed attributes. In this paper, we are going to analyze various schemes for encryption and possible solutions for their limitations that consist of Attribute Based Encryption (ABE), CP...
Secured and Verifiable Approach for Attribute Based Encryption in Cloud Computing
International Journal of Engineering Sciences & Research Technology, 2014
Cloud Computing has changed the phenomena of IT industry completely. It allows access to highly scalable, inexpensive, on demand computing resources that can execute the code and store data that are provided. But adoption and approach to cloud computing applies only if the security is ensured. Cloud computing is lacking in security, confidentiality and visibility. Secure the cloud means to secure the storage. Security is achieved by the encryption. There are various encryption standards to ensure the cloud security. Attribute-based encryption (ABE) is public key encryption technique that allows users to encrypt and decrypt messages based on user attributes. In a typical implementation, the size of the cipher text is proportional to the number of attributes associated with it and the decryption time is proportional to the number of attributes used during decryption. To reduce the decryption time in cloud outsourced decryption technique is used. By providing a transformation key to the cloud ABE cipher text is converted into simple cipher text and it only incurs a small computational overhead for the user to recover the plaintext from the transformed ciphertext.. To ensure that transformation performed by cloud server is correct and the data is not modified by the untrusted servers proposed system is introduced. This provides secured and Verifiable Outsourced decryption.
A survey of Attribute based encryption and Access Control Models in Cloud Storage Environment
Journal of emerging technologies and innovative research, 2018
For big industries and academia as well, cloud is becoming an essential tool for data repository maintenance. Cloud computing is a set of different types of hardware and software activities that work collectively to deliver many aspects of computing to the end user as an online services. It provides on demand scalable and cost effective services for storing documents. However with all of these services it comes up with number of challenges associated with utilizing the cloud securely. Achieving unbreakable document or outsourced data security is again a very important issue to consider. To provide security to the outsourced documents, Attribute based encryption is an excellent solution. In this paper, we are going to do analysis main attribute based encryption encryption scheme and its related access control models available for handling data under various scenarios of the cloud storage environment. IndexTerms Attribute Based Encryption, Access Control, Bilinear Map, Diffie Hellman ...
2014
Functional encryption ensures that user can access encrypted data stored over cloud in which the first step is to encrypt the data files {P1, P2,........,Pn) by the data owner using Cipher text policy ABE that result in {C1, C2,........, Cn}. Then upload the encrypted files on a cloud based storage server or on a public cloud. Once the files are uploaded on the cloud the data owner list the prospective users and send all of them an email which contains two links. The first link is to send request to the Server a key as trapdoor to retrieve the encrypted data from the storage server. On the server side the third party which is a trusted party use this email to identify that this is an authorized user and then fetch the encrypted data file. Using the email id as an attribute it decrypt the file and get a function f(Ci) of the encrypted file.
Enhanced Data Security in Cloud by CP-ABE Access Control Scheme
— Cloud computing refers to the practice of transitioning computer services such as computation or data storage to multiple redundant offsite locations available on the Internet, which allows application software to be operated using internet-enabled devices. Clouds can be classified as public, private, and hybrid. Cloud computing and storage solutions provide users and enterprises with various capabilities to store and process their data in third-party data centers. It relies on sharing of resources to achieve coherence and economies of scale, similar to a utility (like the electricity grid) over a network. At the foundation of cloud computing is the broader concept of converged infrastructure and shared services. Since the cloud computing environment is distributed and untrusted, data owners have to encrypt outsourced data to enforce confidentiality. To achieve practicable access control of encrypted data in an untrusted environment is an urgent issue that needs to be solved. Attribute-Based Encryption (ABE) is a promising scheme suitable for access control in cloud storage systems. This system proposes a hierarchical attribute-based access control scheme with constant-size cipher text.
A SURVEY ON ATTRIBUTE BASED ENCRYPTION TECHNIQUES IN CLOUD COMPUTING
Cloud computing is an emerging computing paradigm, enabling users to store their data remotely in a server and to provide services on-demand. In cloud computing, cloud users and cloud service providers are almost clear from different trust domains. The critical issues for remote data storage are data security and privacy. A secure user enforced the data access control and that mechanism must be provided before the cloud users have liberty to outsource delicate data to cloud for storage. With the emergence of sharing personal data on cloud servers, it is essential to acquire an efficient encryption system with a fine-grained access control to encrypt outsourced data. Attribute-Based Encryption is a public key based encryption that enables access control over encrypted data using access policies and ascribed attributes. In this paper, we are going to analyze various schemes for encryption and possible solutions for their limitations that consist of Attribute Based Encryption (ABE), CP-ABE, HABE, MA-ABE, KP-ABE
Attribute Based Encryption with Privacy Preserving In Clouds
Security and privacy are very important issues in cloud computing. In existing system access control in clouds are centralized in nature. The scheme uses a symmetric key approach and does not support authentication. Symmetric key algorithm uses same key for both encryption and decryption. The authors take a centralized approach where a single key distribution center (KDC) distributes secret keys and attributes to all users. A new decentralized access control scheme for secure data storage in clouds that supports anonymous authentication. The validity of the user who stores the data is also verified. The proposed scheme is resilient to replay attacks. In this scheme using Secure Hash algorithm for authentication purpose, SHA is the one of several cryptographic hash functions, most often used to verify that a file has been unaltered. The Paillier crypto system, is a probabilistic asymmetric algorithm for public key cryptography. Pailier algorithm use for Creation of access policy, file accessing and file restoring process.