Abstract—Cloud computing is an emerging technology that is
still unclear to many security problems. Ensuring the security
ofstored data in cloud servers is one of the most challenging
issues in such environments. Accordingly, this schema presents
a Hybrid Encryption algorithm that is based on RSA Small-e
and Efficient RSA (HE-RSA) for improving the reliability in
cloud computing environments. The main aim of this project is
to use the cryptography concepts in cloud computing
communications and to increase the security of encrypted data
in cloud servers with the least consumption of time and cost at
the both of encryption and decryption processes.In the
proposed model, the number of key generation exponents has
been increased in comparison to the original RSA. Moreover,a
dual encryption process has been applied in this algorithm to
prevent common attacks against RSA algorithm. In addition,
this schema also presents the comparison between HE-RSA and
original RSA in terms of security and performance. For this
purpose, Key Generation, Encryption and Decryption Time in
Original RSA and HE-RSA have been compared according to
the different size of exponents. Moreover, some of the common
attacks against RSA algorithm have been analysed to detect the
resistance of the proposed algorithm against possible attacks.
Finally, the effects of using HE-RSA on cloud computing
environments have been reviewed in more depth and details.
Index Terms—Cloud computing, security, cryptography,
RSA, sharing.
Faraz Fatemi Moghaddam and Omidreza Karimi are with the Faculty of
Computer Science, Staffordshire University and Asia Pacific University of
Technology and Innovation (A.P.U.), Technology Park Malaysia (T.P.M.),
Bukit Jalil, 57000, Kuala Lumpur, Malaysia (e-mail: f.fatemi@hotmail.com,
omidreza@me.com).
Maen T. Alrashdan is with the Faculty of Research Coordinator, Asia
Pacific University of Technology and Innovation (A.P.U.), Technology Park
Malaysia (T.P.M.), Bukit Jalil, 57000, Kuala Lumpur, Malaysia (Email:
dr.maen@apu.edu.my).
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Cite:Faraz Fatemi Moghaddam, Maen T. Alrashdan, and Omidreza Karimi, "A Hybrid Encryption Algorithm Based on RSA Small-e and Efficient-RSA for Cloud Computing Environments," Journal of Advances in Computer Networks vol. 1, no. 3, pp. 238-241, 2013.
