Data Security Approach in Cloud computing using SHA

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072
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Data Security Approach in Cloud computing using SHA
Prabhleen Kaur Soul 1, Sunil Saini2
1RESEARCH SCHOOLAR
2ASSISTANT PROFESSOR
Dept. of Computer Science and Engineering KITM Kurukshetra Haryana, India
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Abstract The main idea behind this paper is to provide
integrity to the cloud storage area. In order to provide
security in cloud computing we use SHA algorithm. In
this method some important security services including
key generation, encryption and decryption are provided
in Cloud Computing system. Here the TPA is the trusted
entity that has expertise and capabilities to assess cloud
storage security on behalf of a data owner upon request.
The main goal is to securely store and manage the data
so that only authorized users can have access over the
data.
Key Words: SLA,AES, DES ,HTTPS
1. INTRODUCTION
Cloud computing is considered as major part in a
business for fulfilling the request at low cost. It is an
internet based computingwhereapplication,platform,
infrastructure are provided as services [2]. The main
concept of this technology is that, the customers pay
only for those services which used. Resources can be
allocated geography anywhere and can provide any
type of service that a user wants. Now user needs not
to have any type of physical infrastructure. He/shehas
to just use the services of this technology and pay
according to usage of services.
Cloud computing is a novel type of prototype, is
coming. This term is a novel term that seems by the
fourth season, 2007. The custom of internet and novel
knowledge’s today, for commercial and designed for
the present consumers, is previously portion of daily
lifespan. Slightly info is obtainable wherever in the
domain at marginally time. Thatwasnotprobablelittle
ages before. Today it have ascended a lot of potentials
of admission to open and isolated info similar to
internet speedadmittanceorthesettingoutofportable
dispositive that permit the linking to internet from
virtually universally. Cloud computing discusses[3] to
the provision of computing resources concluded the
internet. In its place of custody information on your
individual hard drive or apprising requests for your
requirements, you practice a facility through the
internet, at alternative place, to accumulate your info
or use its requests. Doing so can provide increase to
convinced confidentialityinsinuations.Thiscomputing
technology is the distribution of facilities through the
net. Cloud facilities permit persons and companies to
custom software and hardware that are achieved by
other peoples at faraway sites. Instances of cloud
facilities comprise on the web document stowage,
communal interacting sites, webmail, and online
commercial services. This computing technology
archetypal lets right to use to info and computer
servers from wherever that a network linking is
offered.Thiscomputing technologydeliversacommon
puddle of servers, comprising infor stowage space,
networks, computer processing power, and specific
business and consumer requests.
II. Characteristics of Cloud Computing
The characteristics of Cloud computing [5] which
explains its relation and differencefromthetraditional
computing are given below:
• Virtualization: Virtualization refers to the
abstraction of computer resources (CPU, storage,
network, memory, application stack anddatabase)
from the applications andtheendusersconsuming
the service [6]. It is a technique which multiplexes
the hardware resources and enables the users to
run multiple operating systems on same physical
hardware. This technology helps in slicing a single
data center or high power server to act as multiple
machines. Thenumberofvirtualmachine,asystem
may be divided depends upon the hardware
configuration of system.
• On-Demand-SelfService:Consumercanprovision
or un-provisiontheserviceswhendesired,without
the human interaction with the service provider.
Whether it is software, platform or infrastructure
everything is offered as a service overthenetwork.

• Elasticity: With elasticity, the user is able to
acquire more resources in an on demand manner,
for a small duration and pays for the capacity or
capability they need. When those resources are no
longer needed, the user is able to return that
capacity.
• Location Independence: Enables the users to
access the systems using awebbrowserregardless
of their location or what device they use (PC or
mobile phone). The services are provided to user
residing at any part of the world using their smart
phones, laptops, tablets and office computers.
These devices can be used wherever they are
located with a simple online access point.
• Multi-tenancy: The cloud providers serve the
multiple companies on same infrastructure and
software. This approach is more energy efficient
than multiple copies of software installed on
different infrastructure [7].
• Autonomic: To provide highly reliable services,
Clouds exhibit autonomic behavior by managing
themselves in case of failures or the performance
degradation.
• Measured Services: Due to affordable nature of
cloud, the user can pay on a pay as peruse model.
The cloud provider can measure the levels of
storageandprocessing,bandwidthandthenumber
of user accounts which can be billed accordingly.
• Maintenance: Maintenance of cloud computing is
easier because they do not need to be installed on
each user’s computer and can be accessed from
different places.
III. Challenges of Cloud Computing
The following are the challenges faced by cloud
computing environment [10]:
• Security and Privacy: It deals with securing the
stored data and to monitor the use of the cloud by
the service providers. This challenge can be
addressed[9] by storing the data into the
organization itself and allowing it to be used in the
cloud. So the security mechanisms between the
organizations and the cloud need to be robust.
• Service Delivery and Billing: The service level
agreements (SLAs) of the provider are not
adequate to guarantee the availability and
scalability as it is difficult to assess the cost
involved due to dynamic nature of services.
• Interoperability and Portability: As the cloud
environment is highly dynamic to user requests
and due to the concept of virtualization, the
leverage of migrating in and out of the resources
and applicationsshouldbeallowed.Also,switching
providers should switch between clouds as per
their need, and no lock-in period should exist.
• Reliability and Availability: Cloud providers still
lack in round-the-clock service which results in
frequent outages. Therefore, it becomes important
to monitor the service being provided using
internal or third party tools.
• Automatedserviceprovisioning:Akeyfeatureof
cloud computing is elasticity; resources can be
allocated or released automatically.Soastrategyis
required to use or release the resources of the
cloud, by keeping the same performance as
traditional systems and using optimal resources.
• Performance and Bandwidth Cost: Businesses
can save money on hardware but they have to
spend more for the bandwidth. This can be low
cost for smaller applications but can be
significantly high for the data-intensive
applications.
• Virtual Machines Migration: With virtualization
technology, an entire machine can be takenasafile
or set of files. To unload a heavily loaded physical
machine, it is required to move a virtual machine
between physical machines. The main objective is
to distribute the load in a datacenter or set of
datacenters. Then a strategy is required to
dynamically distribute load when moving virtual
machine to avoid bottlenecks in Cloud computing
system.
• Energy Cost: Cloud infrastructure consumes
enormous amounts of electricalenergyresultingin
high operating costs and carbon dioxide emissions
[10].
IV. Purposed Work
The purpose of the work is to inspect the safety
restriction and focus the present dangers trendy cloud
computing real safety procedures intended for cloud
computing schemes. It determination contribution the
academics to categorize safety provisions by several
stages to distinguish the fears in the numerous cloud
computing prototypes modeled by mutually interior
and exterior customers. Therefore, it will beneficial to

explain cloud safetyprotocolsthatguaranteethesafety
of the cloud environment.
Although cloud computing has been widely used, the
research on resource management in cloud
environment is still an early stage. The main objective
of the research work is to investigate the relevant
efficient and enhancedresourceutilizationapproaches
for cloud based system. A brief description of the work
to be carried out is as under:
 Scheme will be developed to maintain the
integrity of information exchange between
participating systems.
 Scheme will be developed to authenticate the
participating system involved in
communication.
 Scheme will be developed to ensure the
confidentiality of the information exchanged
between participating systems.
 A secure model will be developed which will
comprise the above developed schemes.
Similar to entire computing schemes, cloud computing
organizations essentially reveal safety problems since
the earlyphasesi.e.requestsphasesandprojectphases
of its improvementprocedure.Itresolveprincipaltoan
extra vigorous, safe and fewer errors willing to system
than those systems that categorize safety substances
only on one occasion, once the scheme is addressed.
Owing to the difficulty of thecloudenvironment,actual
progress of a cloud computing scheme desires an
inspection of these safety difficulties and precondition
thus frequent approaches might be recognizedpriorin
the expansion procedure that drive reflect the
complete cloud. In cloud computing environs, inner
fears have graduallyimprovedabovethepreviouslittle
ages. Inner hazard depicts to individuals fears which
monitor inside the association. Inside customers in a
connotation usually have extra info of the data
reserved there in and in future, extra well-informed
about how to charge that information and
requirements thandoexternalcustomers.Whileinside
fears cannot be totally detached, some actual fences
can be developed to ease them.
4.1 Symbolization and Initiations
• FEncod: This is a script document that subjects the
encoded information and document is kept in CSP3.
• FTemp: It is determined through information
handling period (recovery process and drive to be
free) and this one is a provisional document.
• Gen_Key(): This produces a protected key.
• Ks: This is a key which is produced through
Gen_Key procedure in CSP-2.
• Encoding (): This is encoding procedure to encrypt
document.
• Decoding (): This is a decoding procedure to
decipher document.
This procedure negotiates of numerous additional
rules. The customers interrelate over the gateway
server over HTTPS procedure to upload their
information. The Docker repository clustering
procedure Docker Swarm obligates the situation
superior arrangement on gateway server. Thus
document send by customer is directly promoted
towards a nodule of the swarm collection wherever
swarm supervisor leads an indication to introduce a
repository and the information drive be equestriennes
arranged it and the repository willprocedureopenSSL
procedure to encode theinformationthroughAES,RSA
or some supplementarytypicalencodingprocedure.As
quickly as the encoding is complete, the repository
dismisses andtheencodedinformationishaggardback
towards the gateway server besides previously
endorsedtowardsthestowageserver.Thedocumentis
stimulatedaftergatewayservertoadditionalknotsand
servers through SSH procedure. The stowage server
obligates a collection of Docker nodules successively
that receipts disk space after the chief scheme.
Glusterfs procedure is castoff to band the information
interested in numerous pieces and also duplicates it to
a reserve nodule uncertaintysomeandaccumulationit
on the repository collection. In circumstance, the
customerstressestotransferhisinformationhesetsan
appeal over HTTPS on gateway server and at that time
the gateway server recovers the document from the
stowage server and forward it to its nodule for

decoding that includes similar procedure as encoding.
The decoded information is dragged after the gateway
server and then accessible for the customer to get it.
Our suggested arrangement has two key assistances:
1) Effectiveness and safety: - The strategy suggested
through the innocuous is to depend on a unrestricted
and reserved key encoding willbeclear,effectiveinthe
practice of undisclosed key gen and Hash procedure.
Therefore each interval constraints are produced and
key interchangeproceedsplacesoextraprotectedthan
symmetric and asymmetric procedure. Though, our
strategy is supplementary effectual than the other
procedures, since, it does not need a lot of information
encoded in subcontracted and not any extra supports
on the representation chunk, and proportion is
supplementary protectedsinceweencodeinformation
to avoid illegal third revelries to distinguish its
subjects.
2) Open verifiability: We strategy a main difference to
deliver free authentication. Permit, person
supplementary than owner for info on the server has
verified proficient since it does not require the info for
individual chunk encoding.
V. Result Analysis
Implementation is the phase of the development at
what time the conjectural proposal is revolvedoutinto
a functioning method. Therefore it can be reflected to
remain the maximum precarious phase in attaining an
effective novel scheme and in giving the customer,
sureness that the novel system wills effort and stay
operative. The operational phase includes suspicious
preparation, examinationofthepresentsystemandit’s
limitations on execution, conniving of approaches to
accomplish exchange and assessment of exchange
approaches.
Here, our goal is to measure the Encryption and
Decryptionspeedofeachalgorithmfordifferentpacket
sizes. Encryption time is used to calculate the
throughput of an encryption scheme. It indicates the
speed of encryption. The throughput of the encryption
scheme is calculated by dividing the total plaintext in
Megabytes encrypted on the total encryption time for
each algorithmin.Asthethroughputvalueisincreased,
the powerconsumptionof this encryptiontechniqueis
decreased. By consideringdifferentsizes ofdatablocks
(0.5MB to 20MB) the algorithms were evaluated in
terms of the time required to encrypt and decrypt the
data block. All theimplementationswereexacttomake
sure that the results will be relatively fair and accurate
Firstly open the .NET. Encrypt and hashforencryption
purpose.
File successfully uploaded” after uploading of file.
e
encrypted file of that uploaded file.
3
fields username, email id and mobile number of the

user which are used earlier .
Now we have to choose the file which is to beuploaded
by clicking on choose file button. Then click on upload
file button to upload it.
VI. Conclusion and Future Scope
In this proposal, we have offered a summary of
information stowage safety in cloud computing and
projected a frame constructed on encryption system.
To guarantee the safety of customers’ information in
cloud stowage, we planned an operative and effective
encryptionapproachforimprovingsafetyondata-a-at-
rest. We have presented that our arrangement nearly
assurances the safety of information when it is kept in
the informationcenter of some Cloud Service Provider
(CSP). It will assistance to construct a ideal to protect
the information in the arena of cloud calculation. This
architecture is capable to expand the client fulfilment
to a countless degree and it will appeal numerous
nominees in this arena for developed as well as
upcoming investigation farms.
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ing-expense-ids-part-one-overview-rois-ids
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