MITS5002 Cloud Computing: Encryption Algorithms for Data Security

This report explores the critical aspects of securing user data within cloud computing environments. It begins by highlighting the transformative impact of cloud computing on IT and the challenges it presents, particularly concerning data security, ownership, and integrity. The report proposes the use of security algorithms to address these concerns, focusing on four key encryption methods: RSA, AES, DES, and Blowfish. It details the functionality of each algorithm, explaining how they contribute to data protection, user authentication, and secure data storage and retrieval. The report concludes by emphasizing the increasing importance of both cloud and user security, asserting that these algorithms play a crucial role in mitigating security risks and meeting current and future demands. References to relevant academic papers are provided to support the analysis.

Securing User Data In Computing Of Cloud
Using Encryption Algorithm

Cloud Computing
 Cloud computing is transforming the information technology.
 Altering the working environment of all the IT professionals in a
drastic manner.
 Solving a number of problems of conventional computing.
 Handling the peak loads and the software update installation.
 Several organizations are investing a huge amount of money upon
this new technology.

Security Issues and Concerns
 Data security
 Data ownership
 Data Storage trans-coding
 Loss of physical security because of the sharing of resources with
other organizations. No knowledge and control present for running all
resources [1].
 Lack of existence of a single and common standard for ensuring data
integrity. Ensuring of integrity of data means alteration in response to
several transactions which are particularly authorised.

Contd..
 Chance of facing huge damage to the service provider’s reputation of
the cloud and customers may be suing the providers of service if
there are any type of privacy rights which are violated [4].
 Control of both the encryption and the decryption keys.

Proposed Planning and Algorithms
 Security algorithms are to be utilised for removing all the concerns
related to data loss, privacy and segregation during the web
application upon the cloud [2].
Algorithms to be utilised:
 RSA
 DES
 AES
 Blowfish

RSA Algorithm
 Ensures data security in the cloud computing.
 Data encrypted for providing security.
 Securing data by only letting all the users who are authenticated to
access data.
 Data is stored in the cloud.
 Request to be placed to the provider of cloud.
 Cloud provider authenticates the user and delivers data to the user
which is specified.

Contd..
 Every message is mapped to a particular integer.
 Public key is known by all but Private Key is known by only the
particular user owning the data.
 Encryption is done by the cloud service provider.
 Decryption is done by the cloud user or cloud consumer.

AES Algorithm
 Used for information Security.
 It is a block cipher which is mainly symmetric.
 Extremely analysed.
 Widely utilised.
 User take decision for utilising the cloud services and then migrates the
data upon the cloud.
 User submits all the service requirements with the cloud service
provider and then choose the best services offered by the provider.
 Request for reading data occurs after decryption on the user end and
then a plain text is read by the user finally.
 Replaces DES as a standard approved for wide range of applications.

DES Algorithm
 Data Encryption Standard is a block cipher.
 Encrypts data in a number of blocks having size 64bits each.
 Plan text of size 64bits goes as input to DES [3].
 Cipher text produced of size 64bits.
 Both common key as well as algorithm used for encryption and
Decryption.
 Symmetric Algorithm.

Blowfish Algorithm
 Symmetric Key Algorithm.
 Cryptographic.
 Encrypts 64bit blocks having key length variable between 128-
448bits.
 Fast rate of encryption on the 32bits microprocessors.
 Execute less than 5kb memory.
 Utilises primitive operations like XOR or addition.
 Simple implementation.
 Simple design.

Conclusion
 Due to the incrementing demand of cloud, both cloud security as well
as user security are the topmost concerns and all these algorithms
will be helping a lot for all the needs of today and also in decreasing
all the risks of security.

References
 [1] R. Arora, A. Parashar and C.C.I Transforming. Secure user data in
cloud computing using encryption algorithms. International journal of
engineering research and applications, 3(4), pp.1922-1926, 2013.
 [2] M. Almorsy, J. Grundy and I. Müller. An analysis of the cloud
computing security problem. arXiv preprint arXiv:1609.01107, 2016.
 [3] S. Pearson. Privacy, security and trust in cloud computing.
In Privacy and security for cloud computing (pp. 3-42). Springer,
London, 2013.
 [4] X. Chen. Decentralized computation offloading game for mobile
cloud computing. IEEE Transactions on Parallel and Distributed
Systems, 26(4), pp.974-983, 2015.