scholarly journals Evaluating Encryption Algorithms for Sensitive Data Using Different Storage Devices

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Bahman A. Sassani (Sarrafpour) ◽  
Mohammed Alkorbi ◽  
Noreen Jamil ◽  
M. Asif Naeem ◽  
Farhaan Mirza
Keyword(s):  
Flash Memory ◽  
Full Range ◽  
Data Encryption ◽  
Storage Device ◽  
Sensitive Data ◽  
Hard Drives ◽  
Storage Devices ◽  
Aes Algorithm ◽  
Encryption Algorithms ◽  
Storage Encryption

Sensitive data need to be protected from being stolen and read by unauthorized persons regardless of whether the data are stored in hard drives, flash memory, laptops, desktops, and other storage devices. In an enterprise environment where sensitive data is stored on storage devices, such as financial or military data, encryption is used in the storage device to ensure data confidentiality. Nowadays, the SSD-based NAND storage devices are favored over HDD and SSHD to store data because they offer increased performance and reduced access latency to the client. In this paper, the performance of different symmetric encryption algorithms is evaluated on HDD, SSHD, and SSD-based NAND MLC flash memory using two different storage encryption software. Based on the experiments we carried out, Advanced Encryption Standard (AES) algorithm on HDD outperforms Serpent and Twofish algorithms in terms of random read speed and write speed (both sequentially and randomly), whereas Twofish algorithm is slightly faster than AES in sequential reading on SSHD and SSD-based NAND MLC flash memory. By conducting full range of evaluative tests across HDD, SSHD, and SSD, our experimental results can give better idea for the storage consumers to determine which kind of storage device and encryption algorithm is suitable for their purposes. This will give them an opportunity to continuously achieve the best performance of the storage device and secure their sensitive data.

scholarly journals A research on the impact of encryption algorithms on the quality of VPN tunnels’ transmission

2018 ◽  
Vol 21 ◽  
pp. 00011
Author(s):  
Dariusz Strzęciwilk ◽  
Krzysztof Ptaszek ◽  
Paweł Hoser ◽  
Izabella Antoniku
Keyword(s):  
Computer Network ◽  
Hash Functions ◽  
Data Encryption ◽  
Data Loss ◽  
Aes Algorithm ◽  
Encryption Algorithms ◽  
Quality Of Transmission ◽  
The Impact ◽  
Data Length

The following article presents the results on the impact of encryption algorithms and the cryptographic hash function on the QoS (Quality of Service) transmission in a computer network. A network model supporting data encryption using the AES algorithm and the MD5 and SHA hash functions used in VPN tunnels was designed and tested. The influence of different data length on the quality of transmission in a secured network was studied. The measurements and tests of networks were performed according to two methodologies ITU-T Y.1564 and RFC 2544. The impact of the data encryption mechanism on bandwidth, data loss and maximum delays was examined. The secured network tests were performed with different combinations of encryption algorithms and hash functions of the VPN tunnel in the ESP (Encapsulating Security Payload) transport mode.

scholarly journals A Crash Recovery Scheme for a Hybrid Mapping FTL in NAND Flash Storage Devices

Electronics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 327
Author(s):  
Jong-Hyeok Park ◽  
Dong-Joo Park ◽  
Tae-Sun Chung ◽  
Sang-Won Lee
Keyword(s):  
Flash Memory ◽  
Practical Importance ◽  
Normal Operation ◽  
Storage Device ◽  
Nand Flash ◽  
Hybrid Mapping ◽  
Flash Storage ◽  
Storage Devices ◽  
Recovery Scheme ◽  
Crash Recovery

An FTL (flash translation layer), which most flash storage devices are equipped with, needs to guarantee the consistency of modified metadata from a sudden power failure. This crash recovery scheme significantly affects the writing performance of a flash storage device during its normal operation, as well as its reliability and recovery performance; therefore, it is desirable to make the crash recovery scheme efficient. Despite the practical importance of a crash recovery scheme in an FTL, few works exist that deal with the crash recovery issue in FTL in a comprehensive manner. This study proposed a novel crash recovery scheme called FastCheck for a hybrid mapping FTL called Fully Associative Sector Translation (FAST). FastCheck can efficiently secure the newly generated address-mapping information using periodic checkpoints, and at the same time, leverages the characteristics of an FAST FTL, where the log blocks in a log area are used in a round-robin way. Thus, it provides two major advantages over the existing FTL recovery schemes: one is having a low logging overhead during normal operations in the FTL and the other to have a fast recovery time in an environment where the log provisioning rate is relatively high, e.g., over 20%, and the flash memory capacity is very large, e.g., 32 GB or 64 GB.

Implementing Efficient Management and Security of Removable Storage by FVM

2012 ◽  
Vol 197 ◽  
pp. 467-472
Author(s):  
Jun Ma ◽  
Jiang Chun Ren ◽  
Zhi Ying Wang ◽  
Jiang Jiang Wu ◽  
Yong Cheng ◽  
...  
Keyword(s):  
Virtual Machine ◽  
Security Policies ◽  
Storage Device ◽  
Sensitive Data ◽  
Operation System ◽  
Unauthorized Access ◽  
Storage Devices ◽  
Efficient Management ◽  
Trust Chain ◽  
Set Up

The security usage and management of removable storage devices has become a vital problem for enterprises and individuals. However, the required strict security policies for preventing unauthorized access to sensitive data raise the decrease of usability and flexibility. The main problem rests on the binding between security and application domains which stifles the initiative of the devices on themselves. This paper presents TRS, an efficient active architecture that binds a feather-weight virtual machine (FVM) to the removable storage device. It is designed based on an inside-bound smart card as well as the chip operation system (COS) which builds a trust channel between the FVM and the device. The FVM is set up by a trust chain and provides isolated usage environment for process accessing the device which prevents the obtained data from leakage. Finally, we implement a USB flash disk we call as UTrustDisk based on the hardware structure of Amordisk which is a security product of Nationz Technologies Inc. The results show the average overhead of read and write is 7.5% and 11.5%.

scholarly journals An approach for enhancing data confidentiality in Hadoop

2020 ◽  
Vol 20 (3) ◽  
pp. 1547
Author(s):  
Shahab Wahhab Kareem ◽  
Raghad Zuhair Yousif ◽  
Shadan Mohammed Jihad Abdalwahid
Keyword(s):  
Hybrid System ◽  
Critical Issue ◽  
Data Encryption ◽  
Distributed File System ◽  
Data Confidentiality ◽  
Sensitive Data ◽  
Storage Devices ◽  
Data Problem ◽  
Hadoop Distributed File System ◽  
Encryption Schemes

<p class="Abstract">The amount of data processed and stored in the cloud is growing dramatically. The traditional storage devices at both hardware and software levels cannot meet the requirement of the cloud. This fact motivates the need for a platform which can handle this problem. Hadoop is a deployed platform proposed to overcome this big data problem which often uses MapReduce architecture to process vast amounts of data of the cloud system. Hadoop has no strategy to assure the safety and confidentiality of the files saved inside the Hadoop distributed File system(HDFS). In the cloud, the protection of sensitive data is a critical issue in which data encryption schemes plays avital rule. This research proposes a hybrid system between two well-known asymmetric key cryptosystems (RSA, and Paillier) to encrypt the files stored in HDFS. Thus before saving data in HDFS, the proposed cryptosystem is utilized for encrypting the data. Each user of the cloud might upload files in two ways, non-safe or secure. The hybrid system shows higher computational complexity and less latency in comparison to the RSA cryptosystem alone.</p>

scholarly journals A Novel B-Tree Index with Cascade Memory Nodes for Improving Sequential Write Performance on Flash Storage Devices

2020 ◽  
Vol 10 (3) ◽  
pp. 747
Author(s):  
Bo-Kyeong Kim ◽  
Gun-Woo Kim ◽  
Dong-Ho Lee
Keyword(s):  
Flash Memory ◽  
High Reliability ◽  
Index Structure ◽  
Storage Device ◽  
Nand Flash ◽  
Solid State Drives ◽  
Flash Storage ◽  
Storage Devices ◽  
B Trees ◽  
Tree Index

Flash storage devices such as solid-state drives and multimedia cards have been widely used in various applications because of their fast access speed, low power consumption, and high reliability. They consist of NAND flash memories that perform slow block erasures before overwriting data on a prewritten page. This characteristic can lead to performance degradation when applying the original B-tree on the flash storage device without any changes. Although various B-trees have been proposed for flash memory, they still require many flash operations that degrade overall performance. To address the problem, we propose a novel B-tree index structure that reduces the number of write operations and improves the sequential writes by employing cascade memory nodes. The proposed B-tree index structure delays the updates for the modified B-tree nodes and later performs batch writes in a cascade manner. Also, when records with continuous key values are sequentially inserted, the proposed B-tree index structure does not split the leaf node so that it improves write throughput and page utilization. Through mathematical analysis and experimental results, we show that the proposed B-tree index structure always yields better performance than existing techniques.

Prototype Design of Self-Securing Portable Storage Device

2013 ◽  
Vol 347-350 ◽  
pp. 3911-3914
Author(s):  
Li Jue Zhu ◽  
Wen Tao Zhao ◽  
Hui Jun Wu ◽  
Yong Liu ◽  
Zhao Ming Hu
Keyword(s):  
Intrusion Detection ◽  
Data Encryption ◽  
Data Availability ◽  
Storage Device ◽  
Storage Devices ◽  
The Core ◽  
Self Defense ◽  
Intelligent Storage ◽  
Encryption Decryption ◽  
Prototype Design

Embedding the security mechanism into the device is the core of self-securing, on purpose to provide the device with the ability of self-defense. Currently, security of portable storage device is commonly depends on the host, which makes the data easy to be attacked or stolen. Researches on self-securing mechanism on portable device are few. In order to improve the safety of those devices, we proposed the prototype design of self-securing portable storage device based on the framework of ARM+Linux. Combined with access control, intrusion detection based on storage and data encryption/decryption, it can protect data availability, integrity and confidentiality effectively. Since we have expanded researches on self-securing mechanism of portable storage devices, this prototype design is promising to be one kind of trend of intelligent storage.

scholarly journals Design and Implementation of Pipelined AES Encryption System using FPGA

2020 ◽  
Vol 8 (5) ◽  
pp. 2565-2571
Keyword(s):  
Data Transmission ◽  
Data Encryption ◽  
Advanced Encryption Standard ◽  
Sensitive Data ◽  
Field Programmable ◽  
Speed Up ◽  
Encryption Algorithms ◽  
A New Technique ◽  
Rijndael Algorithm ◽  
Normal Processing

Nowadays, the data encryption became very important because of the usage of the data transmission in all the filed. The Advanced Encryption Standard (AES) that known as Rijndael algorithm is one of the most common encryption algorithms. The AES consists of 9 rounds in addition to the initial and final rounds that makes the AES consumes much time for encrypting the data. Of course the time consumption is considered one of the problems that face the information security. The more time the encryption system consumes to encrypt the data, the more chances increase for the hackers to break into the system. In this work, we find a new technique that can be used to increase the performance speed of the advanced encryption standard. The proposed algorithm methodology depends on the pipelined processing method for the processing time reduction. The paper includes a discussion of the design, the analysis and the implementation using Field Programmable Gate Array (FPGA) of the pipelined method to reduce the consumed numbers of clocks and speed up the processes. The AES is used to protect information and encrypt sensitive data and used in satellites, missiles, military application and other critical application. The paper describes the AES encryption system algorithm and the implementation of both the normal processing and the pipelined processing, and finally a comparison between the two algorithms.

Resolution to Safety Access Control of USB Movable Storage Device

2012 ◽  
Vol 433-440 ◽  
pp. 4555-4558
Author(s):  
Zhen Hai Yu ◽  
Xin Jun Liu
Keyword(s):  
Access Control ◽  
Storage Device ◽  
Sensitive Data ◽  
Confidential Information ◽  
Storage Devices ◽  
Usb Device ◽  
Data Interchange ◽  
Unilateral Control

USB movable storage devices have been bringing significant convenience for data interchange among computers while chances of invalid copy and sensitive data leakage are exposed. In order to decrease the leakage possibility of confidential information, unilateral control takes effect in USB device. This paper introduces how to realize the unilateral control of USB device and elaborates the key technique thereof.

scholarly journals Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4000
Author(s):  
Eunhwan Kim ◽  
Juyeon Han ◽  
Seokgyu Ryu ◽  
Youngkyu Choi ◽  
Jeeyoung Yoo
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Lithium Ion ◽  
Electrochemical Energy Storage ◽  
Storage Device ◽  
Energy Storage Device ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Storage Ability ◽  
Electrochemical Energy

For decades, improvements in electrolytes and electrodes have driven the development of electrochemical energy storage devices. Generally, electrodes and electrolytes should not be developed separately due to the importance of the interaction at their interface. The energy storage ability and safety of energy storage devices are in fact determined by the arrangement of ions and electrons between the electrode and the electrolyte. In this paper, the physicochemical and electrochemical properties of lithium-ion batteries and supercapacitors using ionic liquids (ILs) as an electrolyte are reviewed. Additionally, the energy storage device ILs developed over the last decade are introduced.

scholarly journals Implications of NVM Based Storage on Memory Subsystem Management

2020 ◽  
Vol 10 (3) ◽  
pp. 999
Author(s):  
Hyokyung Bahn ◽  
Kyungwoon Cho
Keyword(s):  
Random Access ◽  
Disk Drive ◽  
Main Memory ◽  
Memory Storage ◽  
Storage Device ◽  
Storage Devices ◽  
Large Memory ◽  
Memory Subsystems ◽  
Non Volatile Memory ◽  
Management Techniques

Recently, non-volatile memory (NVM) has advanced as a fast storage medium, and legacy memory subsystems optimized for DRAM (dynamic random access memory) and HDD (hard disk drive) hierarchies need to be revisited. In this article, we explore the memory subsystems that use NVM as an underlying storage device and discuss the challenges and implications of such systems. As storage performance becomes close to DRAM performance, existing memory configurations and I/O (input/output) mechanisms should be reassessed. This article explores the performance of systems with NVM based storage emulated by the RAMDisk under various configurations. Through our measurement study, we make the following findings. (1) We can decrease the main memory size without performance penalties when NVM storage is adopted instead of HDD. (2) For buffer caching to be effective, judicious management techniques like admission control are necessary. (3) Prefetching is not effective in NVM storage. (4) The effect of synchronous I/O and direct I/O in NVM storage is less significant than that in HDD storage. (5) Performance degradation due to the contention of multi-threads is less severe in NVM based storage than in HDD. Based on these observations, we discuss a new PC configuration consisting of small memory and fast storage in comparison with a traditional PC consisting of large memory and slow storage. We show that this new memory-storage configuration can be an alternative solution for ever-growing memory demands and the limited density of DRAM memory. We anticipate that our results will provide directions in system software development in the presence of ever-faster storage devices.

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