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Distributed, Concurrent, And Independent Access To Encrypted Cloud Databases

ABSTRACT

We propose a novel architecture that integrates cloud database services with data confidentiality and the possibility of executing concurrent operations on encrypted data. This is the first solution supporting distributed clients to connect directly to an encrypted cloud database, and to execute parallel and independent operations including those modifying the database value. The proposed architecture has the further advantage of eliminating intermediate proxies that limit the elasticity, availability, and scalability properties that are intrinsic in cloud-based solutions. The efficacy of the proposed architecture is evaluated through theoretical analyses and extensive experimental results based on a prototype implementation subject to the TPC-C standard benchmark for different numbers of clients and network latencies Database and table metadata are encrypted through the same encryption key before being saved. This encryption key is called a master key. Only trusted clients that already know the master key can decrypt the metadata and acquire information that is necessary to encrypt and decrypt tenant data. Each metadata can be retrieved by clients through an associated ID, which is the primary key of the metadata storage table. This ID is computed by applying a Message Authentication Code (MAC) function to the name of the object (database or table) described by the corresponding row. The use of a deterministic MAC function allows clients to retrieve the metadata of a given table by knowing its plaintext name.

EXISTING SYSTEM	PROPOSED SYSTEM
EXISTING CONCEPT:- The SecureDBaaS architecture is tailored to cloud platforms and does not introduce any intermediary proxy or broker server between the client and the cloud provider.   SecureDBaaS relates more closely to works using encryption to protect data managed by UN trusted databases.	PROPOSED  CONCEPT :- The proposed architecture is subject to the TPC-C standard benchmark for different numbers of clients and network latencies show that the performance of concurrent read and write operations. Only trusted clients that already know the master key can decrypt the metadata and acquire information
EXISTING TECHNIQUE:- SecureDBaaS	PROPOSED TECHNIQUE:-       TPC-C standard benchmark
TECHNIQUE DEFINITION:- Database-as-a-service is one of many services being marketed as part of cloud computing. It has several major issues and concerns related to security.	TECHNIQUE DEFINITION:- While the benchmark present the activity of a wholesale supplier, TPC-C is not limited to the activity Transaction integrity (combining)
DRAWBACKS:- Even though they using secure DBaaS      means it give more secure buy its functions cannot be outsourced to an un trusted cloud provider. It Cannot Store them in encrypted format	ADVANTAGES:- Distributing data among different        providers and by taking advantage of secret sharing   Every user having the own master key