This presentation describes the various study on using the multi-cloud storage architecture for providing data security and consistency to the cloud users.

1. A Study on Modest Secured Multi-Cloud
Design in Cloud Computing
Environment
Sam Navin M
M.E - Software Engineering
St. Joseph’s College of Engineering
Chennai

2. Agenda
 Abstract
 Cloud Computing
 Cloud Service Models
 Cloud Deployment Models
 Cloud Security
 Literature Analysis
 Summary of the Analysis
 Conclusion
 References

3. Abstract
Cloud is the decisive technology used by numerous people in this developing
world. As in today's cloud computing atmosphere, security is deliberated as a
notable anxiety for the cloud users. This work helps to understand the study
on the multi-cloud storage architecture. Due to some untrusted users or
hackers there occurs certain security issues in the single cloud. Several
specialists surveyed on the security issue and then they specified that the
multi-cloud data storage gives enhanced security to the cloud users when
compared to the single cloud.

4. Cloud Computing
 Cloud computing is designed on behalf of maintaining the application
databases and for storing the user's data on a remote server which can be
accessed effortlessly through the internet.
 The readiness, user-friendliness and tractability of computing assets
grabbed the cloud into the new ingenious model.
 Cloud encounters some specific challenges like security, load balancing,
scalability, performance, trustworthiness, cost and robustness.
 The cloud is composed of service models and deployment models.

5. Cloud Service Models

6. Cloud Service Providers (CSP’s) offer their services by using three
necessary models and they are as follows: Infrastructure as a Service
(IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS).
 IaaS (Infrastructure as a Service) proposes file storage, load balancers, IP
address, VM’s and firewalls.
 PaaS (Platform as a Service ) suggests operating system, data catalogue,
development tools and web server.
 SaaS (Software as a Service ) intends email, CRM (Customer
Relationship Management), games and virtual desktop.

7. Cloud Deployment Models

8. The foremost cloud deployment models are public cloud, private cloud,
community cloud and hybrid cloud.
 The public cloud structure is established for open access and it is used by
common public users.
 The private cloud structure is established specifically for the single
group or an organization which includes several customers to be
involved.
 The community cloud structure is specifically used by shared users from
administrations/governments that obligate common anxieties (concerns).
 Two or additional diverse infrastructures of cloud (public cloud, private
cloud or community cloud) combined to construct a hybrid cloud.

9. Cloud Security
 It is clear that although the use of cloud has speedily increased, cloud
computing security is still considered the main concern in the cloud
computing atmosphere. Cloud users do not want to lose their sensitive
data due to malicious insiders and hackers in the cloud.
 Data stored on single cloud is considered as probability of risk occurred
due to attackers easily enter in single cloud which results in service
availability failure.
 Multi-cloud is developed due to its ability to reduce security risks that
affect the cloud user.
 Shifting from single cloud to multi-cloud is to ensure the privacy and
security of users’ sensitive information.

10. Literature Analysis
 This work is a study on using the multi-cloud storage architecture for
providing data security and consistency to the cloud users.
 Several researchers supports the migration from single cloud to multi
cloud due to its ability to decrease security risks that affect the cloud
computing users.
 Customers do not want to lose their private information as an outcome of
malicious present in the cloud and hence many scholars move towards
multi-cloud since it has received less attention in the zone of security.

11. Study on different methods used for
defining the data security in
multi-cloud architecture
S:No Existing
Papers
Defined
Method
Purpose of the
Defined Method
1 Enhancement of Service
and Data Security in Multi-
Cloud Environment [1]
Secret sharing and
Homomorphic encryption
technique
This technique affords
confidentiality and safety
to the cloud user’s
thoughtful information by
distributing the information
over multiple clouds.
2 Towards Privacy-
Preserving Storage and
Retrieval in Multiple
Clouds [2]
Privacy-preserving STorage
and REtrieval (STRE)
mechanism
This mechanism make
available of secrecy,
trustworthiness and
protection for the user’s
encrypted data across
multiple self-determining
clouds.

12. S:No Existing
Papers
Defined
Method
Purpose of the
Defined Method
3 Data Storage in Secured
Multi-Cloud Storage in
Cloud Computing [5]
Secured Cost-effective
Multi-Cloud Storage
(SCMCS) model
This model provides
effectual distribution of
data amongst prevailing
cloud service providers in
order to distribute data
readiness and confidence
to cloud users.
4 Truly Secured Multi-Cloud
Data Using Advanced
Encryption Standard (AES)
[6]
AES (Advanced
Encryption Standard)
method
This method is used in
multiple clouds for
effective and speedy
encryption and decryption
of user's sensitive data in
secure way.
5 Security in Multi-Cloud
Data Storage with SIC
Architecture [7]
SIC - Secure Inter-Cloud
Architecture
This architecture provides
safe and secure cloud
environment for the cloud
user’s to store and access
the data without any cause
or delay.

13. S:No Existing
Papers
Defined
Method
Purpose of the
Defined Method
6 Enhanced File Security
using Encryption and
Splitting technique over
Multi-cloud Environment
[8]
Encryption and Splitting
technique
User's file fidelity and
security are improved by
using this technique. The
file is been split and
encrypted in multiple
clouds for providing
protection & reliability for
cloud users during the file
retrieval.
7 Enhanced Security for
Multi-Cloud Storage using
AES Algorithm [9]
AES algorithm and MD5
technique
AES algorithm is used for
splitting the encrypted file
into diverse chunks and to
store it in multiple clouds.
MD5 used to substantiate
the data with the pair of
cloud servers.

14. Summary of the Analysis
 This work affords the detailed study on the advantage of using multi-
cloud storage in cloud computing.
 Many researchers support multi-cloud model as it stretches an enhanced
security and convenience of user secured data but in case of single cloud
it is examined that the data can be hewed straightforwardly by the
hacker.
 Multi-cloud platform come across the necessities of cloud users
proficiently than the single cloud by avoiding the unattainability of cloud
service and the confidentiality hazards and hence the researchers
describe that overall performance of multi-cloud is improved by
providing trustworthiness and consistency among all the cloud users.

15. Modest Multi-cloud Design

16. Conclusion
As users increasing habitually in the present-day cloud scenario the
trustworthiness, fidelity, cost and easier data retrieval provide an enhanced
advantage among cloud users. Security is reflected as the utmost precarious
threat that ought to be absorbed sensibly. Through various analysis of
security in a cloud platform, this work provides the survey on using the
multi-cloud storage model. Many researchers deliver that the security
delinquent is astonished by the multi-cloud model. Hence by analyzing the
various studies , it is considered that the security risks which distress the
cloud users are condensed by using the multi-cloud structural design.

17. References
[1] M. Nivetha Mani, and R. Murugan, “Enhancement of Service and Data
Security in Multi-Cloud Environment,” International Journal of Innovative
Research in Computer and Communication Engineering, vol. 4, issue 10,
October 2016.
[2] Jingwei Li, Dan Lin, Anna Cinzia Squicciarini, Jin Li, and Chunfu Jia,
“Towards Privacy-Preserving Storage and Retrieval in Multiple Clouds,” IEEE
Transactions on Cloud Computing, vol. 5, no. 3, September 2017.
[3] Nitesh Shrivastava and Ganesh Kumar, “A Survey on Cost Effective Multi-
cloud Storage in Cloud Computing,” International Journal of Advanced Research
in Computer Engineering & Technology (IJARCET) , vol. 2, issue 4, April 2013.

18. [4] B. AmarNadh Reddy and P. Raja Sekhar Reddy, “Effective Data
Distribution Techniques for Multi-Cloud Storage in Cloud Computing,”
International Journal of Engineering Research and Applications (IJERA), vol. 2,
issue 5, October 2012.
[5] Archana Waghmare, Rahul Patil, Pramod Mane and Shruti Bhosale, “Data
Storage in Secured Multi-Cloud Storage in Cloud Computing,” International
Journal of Computational Engineering Research, vol. 04, issue. 2, February 2014.
[6] Shubham Aher, Salman Shaikh, Arsalaan Merchant and Krishna Palav,
“Truly Secured Multi-Cloud Data Using Advanced Encryption Standard (AES),”
International Journal of Innovative Research in Computer and Communication
Engineering, vol. 4, issue 1, January 2016.

19. [7] Kalyani. M. Borse, Ankita. G. Deshpande, Ashlesha. A. Deshpande and
Juily. S. Hardas, “Security in Multi-Cloud Data Storage with SIC Architecture,”
International Journal of Research in Engineering and Technology, vol. 3, issue 2,
Feb-2014.
[8] Nisha D. Dable and Nitin Mishra, “Enhanced File Security using Encryption
and Splitting technique over Multi-cloud Environment,” International Journal on
Advanced Computer Theory and Engineering (IJACTE), vol. 3, issue 4, 2014.
[9] Namita N. Pathak and Meghana Nagori, “Enhanced Security for Multi
Cloud Storage using AES Algorithm,” International Journal of Computer Science
and Information Technologies, vol. 6, issue 6, 2015.

20. [10] G. Sidharth and D. Baswaraj, “Cloud Computing Security from Single to
Multi-Clouds,” International Journal of Computer Science and Mobile
Computing, vol. 2, issue. 10, October 2013.
[11] J.M. Patil and B. S. Sonune, “Data Security using Multi Cloud
Architecture,” International Journal on Recent and Innovation Trends in
Computing and Communication, vol. 3, issue 5, May 2015.
[12] K. Subramanian and F. Leo John, “Data Security in Single and Multi-
Cloud Storage–An Overview,” International Journal of Innovative Research in
Computer and Communication Engineering, vol. 4, issue 11, November 2016.

21. THANK YOU