Indian Journal of Science and Technology

Open Access Open Access  Restricted Access Subscription Access

Implementation of a Parallel XTS Encryption Mode of Operation


Affiliations
1 Computer Systems Research Group, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang, Malaysia
2 Computer Systems Research Group, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang
3 Intelligent Systems and Robotics Lab, Universiti Putra Malaysia, 43400 Serdang, Malaysia
 

Security of data stored inside storage devices is becoming one of the main issues in computer security now. It is known that the most efficient techniques to protect storage devices are using cryptography. Developing newer and more secure encryption algorithms and modes of operation might be critically important to protect these devices since conventional disk encryption algorithms, such as CBC mode, have shown serious security flaws. In this paper, the IEEE XTS encryption mode of operation for storage encryption (P1619 standard) has been implemented using parallel design. A performance comparison between the sequential and parallel algorithms of XTS mode is presented here. Parallel overheads that prevented from achieving perfect linear speedup are measured and minimized. The parallel XTS algorithm has shown a speedup of 1.80, with 90% efficiency, faster than the sequential algorithm. In these simulations, AES is used as encryption algorithm with 256-bit encryption key.

Keywords

XTS Mode, Disk Encryption, Encryption Modes, Parallel Processing
User

Abstract Views: 205

PDF Views: 0




  • Implementation of a Parallel XTS Encryption Mode of Operation

Abstract Views: 205  |  PDF Views: 0

Authors

Mohammad Ahmed Alomari
Computer Systems Research Group, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang, Malaysia
Khairulmizam Samsudin
Computer Systems Research Group, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang
Abdul Rahman Ramli
Intelligent Systems and Robotics Lab, Universiti Putra Malaysia, 43400 Serdang, Malaysia

Abstract


Security of data stored inside storage devices is becoming one of the main issues in computer security now. It is known that the most efficient techniques to protect storage devices are using cryptography. Developing newer and more secure encryption algorithms and modes of operation might be critically important to protect these devices since conventional disk encryption algorithms, such as CBC mode, have shown serious security flaws. In this paper, the IEEE XTS encryption mode of operation for storage encryption (P1619 standard) has been implemented using parallel design. A performance comparison between the sequential and parallel algorithms of XTS mode is presented here. Parallel overheads that prevented from achieving perfect linear speedup are measured and minimized. The parallel XTS algorithm has shown a speedup of 1.80, with 90% efficiency, faster than the sequential algorithm. In these simulations, AES is used as encryption algorithm with 256-bit encryption key.

Keywords


XTS Mode, Disk Encryption, Encryption Modes, Parallel Processing



DOI: https://doi.org/10.17485/ijst%2F2014%2Fv7i11%2F59405