scholarly journals An Efficient Schema of a Special Permutation Inside of Each Pixel of an Image for its Encryption

2018 ◽  
Vol 11 (2) ◽  
pp. 496
Author(s):  
Hana Ali-Pacha ◽  
Naima Hadj-Said ◽  
Adda Ali-Pacha ◽  
Mustafa Mamat ◽  
Mohamad Afendee Mohamed
Keyword(s):  
Data Encryption ◽  
The Internet ◽  
Encryption Algorithms ◽  
Left Block ◽  
Least Significant Bits

<p>The developments of communications and digital transmissions have pushed the data encryption to grow quickly to protect the information, against any hacking or digital plagiarisms. Many encryption algorithms are available on the Internet, but it's still illegal to use a number of them. Therefore, the search for new the encryption algorithms is still current. In this work, we will provide a preprocessing of the securisation of the data, which will significantly enhance the crypto-systems. Firstly, we divide the pixel into two blocks of 4 bits, a left block that contains the most significant bit and another a right block which contains the least significant bits and to permute them mutually. Then make another permutation for each of group. This pretreatment is very effective, it is fast and is easy to implement and, only consumes little resource.</p>

LIGHTWEIGHT CRYPTOGRAPHIC ALGORITHM IMPLEMENTATION IN A MICROCONTROLLER SYSTEM

2021 ◽  
Vol 17 (1) ◽  
pp. 260-264
Author(s):  
Alexandru VULPE ◽  
Raluca ANDREI ◽  
Alexandru BRUMARU ◽  
Octavian FRATU
Keyword(s):  
The Internet ◽  
Continuous Increase ◽  
Security Issues ◽  
Cryptographic Algorithm ◽  
Physical Limitations ◽  
Encryption Algorithms ◽  
Iot Devices ◽  
The Cost ◽  
Algorithm Implementation ◽  
Lightweight Encryption

Abstract: With the development of mobile devices and the advent of smartphones, the Internet has become part of everyday life. Any category of information about weather, flight schedule, etc. it is just a click away from the keyboard. This availability of data has led to a continuous increase in connectivity between devices, from any corner of the world. Combining device connectivity with systems automation allows the collection of information, its analysis and implicitly decision-making on the basis of information. Their introduction and continued expansion of devices that communicate in networks (including the Internet) have made security issues very important devices as well as for users. One of the main methodologies that ensures data confidentiality is encryption, which protects data from unauthorized access, but at the cost of using extensive mathematical models. Due to the nature of IoT devices, the resources allocated to a device can be constrained by certain factors, some of which are related to costs and others to the physical limitations of the device. Ensuring the confidentiality of data requires the use of encryption algorithms for these interconnected devices, which provide protection while maintaining the operation of that device. The need for these types of algorithms has created conditions for the growth and development of the concept of lightweight encryption, which aim to find encryption systems that can be implemented on these categories of devices, with limited hardware and software requirements. The paper proposes a lightweight cryptographic algorithm implemented on a microcontroller system, comparing its performances with those of the already existing system (based on x86).

scholarly journals Analysis of Cryptography Algorithms Implemented in Android Mobile Application

2021 ◽  
Vol 50 (4) ◽  
pp. 786-807
Author(s):  
Alen Salkanovic ◽  
Sandi Ljubic ◽  
Ljubisa Stankovic ◽  
Jonatan Lerga
Keyword(s):  
Operating System ◽  
Mobile Application ◽  
Data Encryption ◽  
Performance Outcomes ◽  
Primary Objective ◽  
Symmetric Encryption ◽  
Variable Size ◽  
Encryption Algorithms ◽  
Android Operating System ◽  
Time Required

This paper evaluates the performances of numerous encryption algorithms on mobile devices running the Android operating system. The primary objective of our research was to measure and compare the relative performances of tested algorithm implementations (Data Encryption Standard (DES), 3DES, Advanced Encryption Standard (AES), ChaCha20, Blowfish, and Rivest Cipher 4 (RC4)) on the Android platform. The algorithms were compared in terms of CPU utilization by measuring the time required to encrypt and decrypt variable size text files. Besides evaluating the six common symmetric encryption ciphers, a comparison has been conducted for several Password-Based Encryption (PBE) algorithms. Diverse cipher transformations were evaluated for each algorithm by utilizing various feedback modes and padding schemes. Two smartphone devices were used for testing, with different versions of the Android operating system and hardware specifications. The summarized performance outcomes for various cipher transformations are presented to demonstrate the effectiveness of each algorithm.

scholarly journals Mahaviracharya Encryption Standard (MES)

2020 ◽  
Vol 8 (6) ◽  
pp. 5759-5764
Keyword(s):  
Encryption Algorithm ◽  
The Internet ◽  
Symmetric Encryption ◽  
Important Thing ◽  
New Process ◽  
Encryption Algorithms ◽  
Use Of The Internet

Given the current use of the Internet, The most important thing is to provide security to the user's information. Many encryption algorithms already exist for this purpose. Here we discussed a new process called Mahaviracharya Encryption Standard. MES is a symmetric encryption algorithm. Here, this algorithm is cryptanalyzed, and compared with blowfish algorithm. MES algorithm can be used instead off algorithms like AES, Blowfish etc.

A Study on Password Strength in Wireless Encryption Protocols

2019 ◽  
Vol 8 (2) ◽  
pp. 21-26
Author(s):  
Gabriel PETRICĂ
Keyword(s):  
Operating System ◽  
Wireless Networks ◽  
Network Security ◽  
Intrusion Detection ◽  
Wireless Network ◽  
Data Encryption ◽  
The Internet ◽  
Wireless Network Security ◽  
Password Strength

Solutions that can be implemented to secure a LAN include firewalls and intrusion detection / prevention systems (IDS / IPS). For a wireless network, security is a challenge considering the specific elements of this type of network: the physical area from which the connection is possible, and the weaknesses of the protocols used for data encryption. This article presents a case study on the most widely used protocols (WEP, WPA and WPA2) to secure wireless networks and the methodology by which passwords can be decrypted using Kali Linux distribution - available for free on the Internet - and applications included in this operating system.

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.

Nanosilver Conductive Ink Inkjet Printing RFID Tag Antenna

2013 ◽  
Vol 469 ◽  
pp. 322-325 ◽  
Author(s):  
Zhi Qiang Gao ◽  
Xiu Ping Zhao
Keyword(s):  
Internet Of Things ◽  
Radio Frequency Identification ◽  
Chemical Reduction ◽  
Production Method ◽  
Data Encryption ◽  
Reduction Reaction ◽  
The Internet ◽  
Protective Agent ◽  
Internet Of Things Technology ◽  
The Internet Of Things

The Internet of Things technology used in agricultural products, such as food safety traceability management is taking the technological advantages of the Internet of Things RFID (Radio Frequency IDentification) is non-contact automatic fast read and write data encryption, in order to achieve a unified management and efficient flow of work in coordination.This thesis reports a production method of conductive nanosilver jet ink. The ink can be used to directly print RFID antenna coil. In the method using silver nitrate as silver source, hydrazine hydrate as a reducing agent, polyvinyl pyrrolidone as a protective agent. Obtain the dispersion of silver nanoparticles through chemical reduction reaction. The dispersion was purified and used inkjet printer into a graphic on glossy photo paper, after 180 °C sintered for 15 minutes with good conductivity, RFID antennas to meet requirements.

Sign in / Sign up

Export Citation Format

Share Document