scholarly journals Enhanced Data Security using Integrated Secret Key with Panagram Series

2019 ◽  
Vol 8 (6S3) ◽  
pp. 1259-1262
Keyword(s):  
Data Security ◽  
Stream Cipher ◽  
Vital Role ◽  
Brute Force ◽  
Secret Key ◽  
Text Format ◽  
Common Value ◽  
Cipher Text ◽  
Single Character ◽  
Brute Force Attack

In this fast moving world, communication among several systems via networks plays a vital role. It is significant to secure Data for a classified transmission. It becomes indispensable to protect information from unconstitutional users. The Existing system uses a common value shared between sender and the receiver. Parent string is arranged in ASCII order, therefore same cipher value is generated for a single character at every instance making brute force attack possible. The proposed system aims at the secured transmission of data in text format between the sender and the receiver. The system uses synchronous stream cipher for the secured transmission of data. The system uses algorithm that is integrated with a series of keys adding to which the message can be encrypted and by using this algorithm the cipher text is decrypted on the receiver end. A pangram is chosen as parent string, so that random cipher values are generated at every instance thereby making brute force attack impossible. The key value is generated by Tribonacci multiplication which uses a prime factor impossible for the hacker to trace the key using traffic analysis. The system remains secured as the secret key of the existing system is replaced with a series of hash value that are self generated by the built-in module in the sender and receiver.

scholarly journals Generation of Chaotic Signal for Scrambling Matrix Content

2020 ◽  
Vol 17 (4) ◽  
pp. 548-553
Author(s):  
Naziha Khlif ◽  
Ahmed Ghorbel ◽  
Walid Aydi ◽  
Nouri Masmoudi
Keyword(s):  
Data Security ◽  
Medical Image ◽  
Data Transfer ◽  
Initial Conditions ◽  
Chaotic Signal ◽  
Brute Force ◽  
Image Scrambling ◽  
Hide Information ◽  
Key Length ◽  
Brute Force Attack

Very well evolved, information technology made so easy the transfer of all types of data over public channels. For this reason, ensuring data security is certainly a necessary requirement. Scrambling data is one solution to hide information from non authorized users. Presenting matrix content, image scrambling can be made by only adding a mask to the real content. A user, having the appropriate mask, can recognize the image content by only subtracting it. Chaotic function is recently used for image encryption. In this paper, an algorithm of image scrambling based on three logistic chaotic functions is proposed. Defined by its initial condition and parameter, each chaotic function will generate a random signal. The set of initial conditions and parameters is the encryption key. The performance of this technique is ensured for two great reasons. First, using masks on the image makes unintelligible its content. Second, using three successive encryption processes makes so difficult attacks. This point reflects, in one hand, a sufficient key length to resist to brute force attack. In the other hand, it reflects the random aspect of the pixel distribution in the scrambled image. That means, the randomness in one mask minimizes the correlations really existent between neighboring pixels. That makes our proposed approach resistant to known attacks and suitable for applications requiring secure data transfer such as medical image exchanged between doctors

scholarly journals Internet Data Security System using AES256 Encoding Technique

2019 ◽  
Vol 8 (4) ◽  
pp. 9758-9763
Keyword(s):  
Gas Sensor ◽  
Data Security ◽  
Original Data ◽  
Sensor Data ◽  
Receiver Side ◽  
Text Format ◽  
Plain Text ◽  
Cipher Text ◽  
Hash Code ◽  
Cloud Servers

Now a days 60% of communication are done only through internet based in this circumstance data security is very important while we are communicating through any internet based networks like cloud, servers etc. With the help of some few sensors like temperature, alcohol or gas sensor data encrypted. In AES256 standard, the sensors convert the plain text into cipher text (which is not understandable) and it is uploaded to the cloud on the transmitter side. On the receiver side we can decode the data only with the help of AES256 key and hash code which are used on the transmitter side. In between this process any person is trying to hack the data he cannot get the original data because the data is in the form of cipher text format

scholarly journals Symmetric Key based Encryption and Decryption using Lissajous Curve Equations

2017 ◽  
Vol 7 (1) ◽  
pp. 285
Author(s):  
Santhosh Kumar B.J. ◽  
Kruthika Vijay
Keyword(s):  
Prime Numbers ◽  
Brute Force ◽  
Secret Key ◽  
Encryption And Decryption ◽  
Symmetric Key ◽  
The Common ◽  
Brute Force Attack ◽  
Substitution Cipher

Sender and receiver both uses two large similar prime numbers and uses parametric equations for swapping values of kx and by product of kx and ky is the common secret key. Generated secret key is used for encryption and decryption using ASCII key matrix of order 16X16. Applying playfair rules for encryption and decryption. Playfair is a digraph substitution cipher. Playfair makes use of pairs of letters for encryption and decryption. This application makes use of all ASCII characters which makes brute force attack impossible.

scholarly journals An improved chacha algorithm for securing data on IoT devices

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Mohammed Salih Mahdi ◽  
Nidaa Falih Hassan ◽  
Ghassan H. Abdul-Majeed
Keyword(s):  
Stream Cipher ◽  
Brute Force ◽  
High Complexity ◽  
Iot Applications ◽  
Duty Cycles ◽  
Fixed Constant ◽  
Rotation Procedure ◽  
Iot Devices ◽  
Brute Force Attack ◽  
High Level

AbstractIn recent years, revolution of development was exceedingly quick in the Internet. Nevertheless, instead of only linking personal computers, mobiles and wearable equipment's, Internet growths from a web binding to true world physical substances that is indicated to novel connotation, which is labeled as Internet of Things (IoT). This concept is utilized in many scopes like education, health care, agriculture and commerce. IoT devices are presented with batteries to have independence from electric current; consequently, their working time is specified by the total time of the power of these batteries. In many IoT applications, data of IoT devices are extremely critical and should be encrypted. Current encryption approaches are created with a high complexity of an arithmetical process to provide a high level of security. However, these arithmetical processes lead to troubles concerning the efficiency and power consumption. ChaCha cipher is one of these approaches, which recently attracted attention due to its deployment in several applications by Google. In the present study, a new stream cipher procedure is proposed (called Super ChaCha), which performs low duty cycles for securing data on IoT devices. The proposed algorithm represents an improved revision to the standard ChaCha algorithm by increasing resistance to cryptanalysis. The modification focuses on rotation procedure which has been changed from a fixed constant to a variable constant based on random value. Also, the inputs of the cipher are changing in the columns form followed by diagonals form to zigzag form and then by alternate form to provide improved diffusion in comparison with the standard ChaCha. Results regarding the security illustrate that Super ChaCha needs 2512 probable keys to break by brute-force attack. Furthermore, the randomness of Super ChaCha successfully passed the five benchmark and NIST test.

Comparative Study of Cryptography for Cloud Computing for Data Security

2019 ◽  
Vol 13 ◽  
Author(s):  
Priya Mathur ◽  
Amit Kumar Gupta ◽  
Prateek Vashishtha
Keyword(s):  
Cloud Computing ◽  
Data Security ◽  
Elliptic Curve Cryptography ◽  
Plain Text ◽  
Hybrid Encryption ◽  
Cipher Text ◽  
Business Applications ◽  
Computing Grid ◽  
Cloud Servers ◽  
Client Side

Cloud computing is an emerging technique by which anyone can access the applications as utilities over the internet. Cloud computing is the technology which comprises of all the characteristics of the technologies like distributed computing, grid computing, and ubiquitous computing. Cloud computing allows everyone to create, to configure as well as to customize the business applications online. Cryptography is the technique which is use to convert the plain text into cipher text using various encryption techniques. The art and science used to introduce the secrecy in the information security in order to secure the messages is defined as cryptography. In this paper we are going to review few latest Cryptographic algorithms which are used to enhance the security of the data on the cloud servers. We are comparing Short Range Natural Number Modified RSA (SRNN), Elliptic Curve Cryptography Algorithm, Client Side Encryption Technique and Hybrid Encryption Technique to secure the data in cloud.

scholarly journals Cryptanalysis of Loiss Stream Cipher-Revisited

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Lin Ding ◽  
Chenhui Jin ◽  
Jie Guan ◽  
Qiuyan Wang
Keyword(s):  
Time Complexity ◽  
Stream Cipher ◽  
Linear Equations ◽  
Data Complexity ◽  
Secret Key ◽  
Key Recovery ◽  
Systems Of Linear Equations ◽  
Key Recovery Attack ◽  
Better Than

Loiss is a novel byte-oriented stream cipher proposed in 2011. In this paper, based on solving systems of linear equations, we propose an improved Guess and Determine attack on Loiss with a time complexity of 2231and a data complexity of 268, which reduces the time complexity of the Guess and Determine attack proposed by the designers by a factor of 216. Furthermore, a related key chosenIVattack on a scaled-down version of Loiss is presented. The attack recovers the 128-bit secret key of the scaled-down Loiss with a time complexity of 280, requiring 264chosenIVs. The related key attack is minimal in the sense that it only requires one related key. The result shows that our key recovery attack on the scaled-down Loiss is much better than an exhaustive key search in the related key setting.

scholarly journals Natural Language Processing by Enhanced Honey Encryption Technique

2019 ◽  
Vol 8 (12S) ◽  
pp. 159-163
Keyword(s):  
Natural Language Processing ◽  
Natural Language ◽  
Language Processing ◽  
Cyber Attacks ◽  
Binary Form ◽  
Brute Force ◽  
Natural Languages ◽  
Cipher Text ◽  
The Right ◽  
Binary Strings

Traditional encryption systems and techniques have always been vulnerable to brute force cyber-attacks. This is due to bytes encoding of characters utf8 also known as ASCII characters. Therefore, an opponent who intercepts a cipher text and attempts to decrypt the signal by applying brute force with a faulty pass key can detect some of the decrypted signals by employing a mixture of symbols that are not uniformly dispersed and contain no meaningful significance. Honey encoding technique is suggested to curb this classical authentication weakness by developing cipher-texts that provide correct and evenly dispersed but untrue plaintexts after decryption with a false key. This technique is only suitable for passkeys and PINs. Its adjustment in order to promote the encoding of the texts of natural languages such as electronic mails, records generated by man, still remained an open-end drawback. Prevailing proposed schemes to expand the encryption of natural language messages schedule exposes fragments of the plaintext embedded with coded data, thus they are more prone to cipher text attacks. In this paper, amending honey encoded system is proposed to promote natural language message encryption. The main aim was to create a framework that would encrypt a signal fully in binary form. As an end result, most binary strings semantically generate the right texts to trick an opponent who tries to decipher an error key in the cipher text. The security of the suggested system is assessed..

scholarly journals Comparison of a Chaotic Cryptosystem with Other Cryptography Systems

2020 ◽  
Vol 10 (5) ◽  
pp. 6187-6190
Author(s):  
A. S. Alshammari
Keyword(s):  
Stream Cipher ◽  
Security Level ◽  
Brute Force ◽  
Randomness Test ◽  
Symmetric Key ◽  
The One ◽  
Symmetric Key Cryptography ◽  
High Degree

The keyspace of a cryptography system must be long enough in order to protect it from brute force attacks. The One-Time Pad (OTP) encryption is unconditionally secure because of its truly random keystream that is used only once. This paper proposes a new chaotic symmetric cryptosystem approach, comparable to OTP. The proposed system utilizes two Lorenz generators, a main and an auxiliary, where the aim of the second one is to make one of the main Lorenz generator’s parameters to vary continually with time in a chaotic manner. This technique was built on digitizing two Lorenz chaotic models to increase the security level. The scrambling scheme was developed and the Lorenz stream cipher binary stream successfully passed the NIST randomness test. The cryptosystem showed a high degree of security, as it had a keyspace of 2576, and it was compared with existing symmetric key cryptography systems, such as DES, 3DES, AES, Blowfish, and OTP.

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