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Several trends are opening up the era of Cloud Computing

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Several trends are opening up the era of Cloud Computing, which is an Internet-based development and use of computer technology. The ever cheaper and more powerful processors, together with the software as a service (SaaS) computing architecture, are transforming data centers into pools of computing service on a huge scale. The increasing network bandwidth and reliable yet flexible network connections make it even possible that users can now subscribe high quality services from data and software that reside solely on remote data centers.
Moving data into the cloud offers great convenience to users since they don’t have to care about the complexities of direct hardware management. The pioneer of Cloud Computing vendors, Amazon Simple Storage Service (S3) and Amazon Elastic Compute Cloud (EC2) are both well known examples. While these internet-based online services do provide huge amounts of storage space and customizable computing resources, this computing platform shift, however, is eliminating the responsibility of local machines for data maintenance at the same time. As a result, users are at the mercy of their cloud service providers for the availability and integrity of their data. Recent downtime of Amazon’s S3 is such an example . From the perspective of data security, which has always been an important aspect of quality of service, Cloud Computing inevitably poses new challenging security threats for number of reasons.

1.2 PROBLEM DEFINITON

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Firstly, traditional cryptographic primitives for the purpose of data security protection cannot be directly adopted due to the users’ loss control of data under Cloud Computing. Whenever it comes to the matter relating to cloud services the user is put at a disadvantage regarding to the security of the file. Basically the file is stored on a server which is a pool resource that is any one with user’s credentials can access the file and if in case the attacker comes to know about the password as well as the encryption keys the attacker can modify the file contents, thus making the information stored in the file to be accessed by the unauthorized user. So, the problem is that what if someone copy’s your work and claims to be his own work. Anything we design , anything we invent is governed by the principle of whether or not it guarantees customer satisfaction.
Hence, the problem is underlying whether the customer can rest assured that his data is safe from unauthorized access or not.

1.3 PURPOSED SYSTEM
In our purposed system, we provide assurance to the user that his information is safe by “implementing a system which provides security mechanisms by offering three levels of security”. Concerning about the data security part, our system is divided mainly into three modules named “ip triggering” module, “client-authentication” module and “redirecting” module. The system generates a user password and a key which is used for client authentication.
The algorithm generates two keywords 8 bit length consisting of combinations of characters, special characters, and numbers which is used for client authorization and file authorization.
Questions may arise as why do we use keys of 8 bit length only? The purpose of our system is to prevent illegal data access if the users’ credential are compromised. By testing against weak algorithms which are easier to crack we design our system to be more robust.

1.4 PROJECT FEATURES
Our scheme would be to prevent illegal access of users’ data. A user after getting himself registered on the system will have the advantage of different layers of security. The most primitive work our system is to inform the user that his data has been accessed from an unregistered ip by using mail triggering events. For login, the attacker tries to access the file by using the credentials stolen from the victim, and upon entering is provided with a dialog box to enter a key. The attacker tries to enter the key which won’t be accepted by any means. The attacker is provided with a three tries so that he can go back. After 3 tries, the attacker is provided with the access of the fake file which is implemented by the redirection module.

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