Thursday, December 27, 2012
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IEEE Dot Net Project - A Secure Erasure Code-Based Cloud Storage System with Secure Data Forwarding
A
Secure Erasure Code-Based Cloud Storage System with Secure Data Forwarding
ABSTRACT:
A cloud storage system, consisting
of a collection of storage servers, provides long-term storage services over
the Internet. Storing data in a third party’s cloud system causes serious
concern over data confidentiality. General encryption schemes protect data confidentiality,
but also limit the functionality of the storage system because a few operations
are supported over encrypted data. Constructing a secure storage system that
supports multiple functions is challenging when the storage system is
distributed and has no central authority. We propose a threshold proxy
re-encryption scheme and integrate it with a decentralized erasure code such
that a secure distributed storage system is formulated. The distributed storage
system not only supports secure and robust data storage and retrieval, but also
lets a user forward his data in the storage servers to another user without
retrieving the data back. The main technical contribution is that the proxy
re-encryption scheme supports encoding operations over encrypted messages as
well as forwarding operations over encoded and encrypted messages. Our method
fully integrates encrypting, encoding, and forwarding. We analyze and suggest
suitable parameters for the number of copies of a message dispatched to storage
servers and the number of storage servers queried by a key server. These
parameters allow more flexible adjustment between the number of storage servers
and robustness.
ARCHITECTURE:
EXISTING
SYSTEM:
In the existing system, constructing a
secure storage system that supports multiple functions is challenging when the
storage system is distributed and has no central authority.
At the early years, the Network-Attached
Storage (NAS) and the Network File System (NFS) provide extra storage devices
over the network such that a user can access the storage devices via network
connection. Afterward, many improvements on scalability, robustness,
efficiency, and security were proposed
DISADVANTAGES
OF EXISTING SYSTEM:
General encryption schemes protect
data confidentiality, but also limit the functionality of the storage system
because a few operations are supported over encrypted data.
Constructing a secure storage
system that supports multiple functions is challenging when the storage system
is distributed and has no central authority.
Data robustness is a major
requirement for storage systems.
PROPOSED
SYSTEM:
In the proposed system, we propose a
threshold proxy re-encryption scheme and integrate it with a decentralized
erasure code such that a secure distributed storage system is formulated.
By using the threshold proxy
re-encryption scheme, we present a secure cloud storage system that provides
secure data storage and secure data forwarding functionality in a decentralized
structure.
Storing data in a third party’s
cloud system causes serious concern on data confidentiality. In order to
provide strong confidentiality for messages in storage servers, a user can encrypt
messages by a cryptographic method before applying an erasure code method to
encode and store messages.
When he wants to use a message, he
needs to retrieve the codeword symbols from storage servers, decode them, and then
decrypt them by using cryptographic keys.
ADVANTAGES
OF PROPOSED SYSTEM:
In this paper, we focus on
designing a cloud storage system for robustness, confidentiality, and
functionality.
A cloud storage system is
considered as a large scale distributed storage system that consists of many independent
storage servers.
MODULES:
Data Owner Module
Construction of secure cloud storage
Module
Proxy re-encryption
Secure Forwarding
MODULES
DESCRIPTION:
Data Owner Module
Construction of secure cloud storage
Module
Proxy re-encryption
Secure Forwarding
SYSTEM
REQUIREMENTS:
HARDWARE REQUIREMENTS:
•
System : Pentium IV 2.4 GHz.
•
Hard
Disk : 40 GB.
•
Floppy
Drive : 1.44 Mb.
•
Monitor : 15 VGA Colour.
•
Mouse : Logitech.
•
Ram : 512 Mb.
SOFTWARE REQUIREMENTS:
•
Operating system : - Windows XP.
•
Coding Language : ASP.NET,
C#.Net.
•
Data Base :
SQL Server 2005
REFERENCE:
Hsiao-Ying Lin, and Wen-Guey Tzeng,
“A Secure Erasure Code-Based Cloud Storage System with Secure Data Forwarding”,
IEEE TRANSACTIONS ON PARALLEL AND
DISTRIBUTED SYSTEMS, VOL. 23, NO.6, JUNE 2012.
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