scholarly journals A New Encryption Algorithm Using Symmetric Key Cryptography

2018 ◽  
Vol 7 (2.32) ◽  
pp. 436
Author(s):  
Gowtham Tumati ◽  
Yalamarthi Rajesh ◽  
Manogna T ◽  
J Ram Kumar
Keyword(s):  
Conventional Method ◽  
Encryption Algorithm ◽  
Public Key ◽  
The Public ◽  
Encryption And Decryption ◽  
Symmetric Key ◽  
Symmetric Key Cryptography ◽  
Cryptographic Techniques

Cryptographic techniques are primarily divided into two categories and they are: Symmetric key type and Asymmetric key type. In Symmetric key cryptography, during the process of encryption and decryption, the same key will be used. This is a conventional method of Cryptography. This might cause some disadvantage and give way for attacks on the algorithm. So, for this reason, the next technique comes into play. In Asymmetric key cryptography, there is a usage of a pair of keys, one for the encryption process and another for decryption process. In this technique also, there is a slight disadvantage, since there is a possibility for attackers to guess the public key from the pair of keys, thereby posing a threat to the process to an extent. In this paper, we develop an algorithm with a simple yet efficient structure using Symmetric key cryptography that could possibly decrease the chance of attacks on the algorithm.  

scholarly journals Survey on Asymmetric Key Cryptographic Algorithms

2020 ◽  
pp. 404-408
Author(s):  
Sabitha S ◽  
Binitha V Nair
Keyword(s):  
Public Key Cryptography ◽  
Public Key ◽  
The Public ◽  
Private Key ◽  
Design And Implementation ◽  
Diffie Hellman ◽  
Encryption And Decryption ◽  
Cryptographic Algorithms ◽  
Symmetric Key ◽  
Symmetric Key Cryptography

Cryptography is an essential and effective method for securing information’s and data. Several symmetric and asymmetric key cryptographic algorithms are used for securing the data. Symmetric key cryptography uses the same key for both encryption and decryption. Asymmetric Key Cryptography also known as public key cryptography uses two different keys – a public key and a private key. The public key is used for encryption and the private key is used for decryption. In this paper, certain asymmetric key algorithms such as RSA, Rabin, Diffie-Hellman, ElGamal and Elliptical curve cryptosystem, their security aspects and the processes involved in design and implementation of these algorithms are examined.

scholarly journals Discrete Sliding Mode Control for Chaos Synchronization and Its Application to an Improved El-Gamal Cryptosystem

Symmetry ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 843 ◽  
Author(s):  
Pei-Yen Wan ◽  
Teh-Lu Liao ◽  
Jun-Juh Yan ◽  
Hsin-Han Tsai
Keyword(s):  
Chaos Synchronization ◽  
Sliding Mode ◽  
Encryption Algorithm ◽  
Public Key ◽  
Public And Private ◽  
The Public ◽  
Encryption And Decryption ◽  
Asymmetric Encryption ◽  
Improved Design ◽  
Discrete Sliding Mode Control

This paper is concerned with the design of an improved El-Gamal cryptosystem based on chaos synchronization. The El-Gamal cryptosystem is an asymmetric encryption algorithm that must use the public and private keys, respectively, in the encryption and decryption processes. However, in our design, the public key does not have to appear in the public channel. Therefore, this proposed improved El-Gamal cryptosystem becomes a symmetric-like encryption algorithm. First, a discrete sliding mode controller is proposed to ensure the synchronization of master and slave chaotic systems; next, a novel improved El-Gamal cryptosystem is presented. In the traditional El-Gamal cryptosystem, the public key is static and needs to be open which provides an opportunity to attack. However, in this improved design, due to the chaos synchronization, the public key becomes dynamic and does not appear in public channels. As a result, drawbacks of long cipher text and time-consuming calculation in the traditional El-Gamal cryptosystem are all removed. Finally, several performance tests and comparisons have shown the efficiency and security of the proposed algorithm.

scholarly journals Symmetric Key Encryption Based on Rotation-Translation Equation

Symmetry ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 73 ◽  
Author(s):  
Borislav Stoyanov ◽  
Gyurhan Nedzhibov
Keyword(s):  
Numerical Methods ◽  
Iterative Method ◽  
Numerical Scheme ◽  
Encryption Algorithm ◽  
Public Key ◽  
Translation Equation ◽  
Encryption And Decryption ◽  
Symmetric Key ◽  
Encryption Algorithms ◽  
Encryption Decryption

In this paper, an improved encryption algorithm based on numerical methods and rotation–translation equation is proposed. We develop the new encryption-decryption algorithm by using the concept of symmetric key instead of public key. Symmetric key algorithms use the same key for both encryption and decryption. Most symmetric key encryption algorithms use either block ciphers or stream ciphers. Our goal in this work is to improve an existing encryption algorithm by using a faster convergent iterative method, providing secure convergence of the corresponding numerical scheme, and improved security by a using rotation–translation formula.

scholarly journals Secure Transmission of Data through Electronic Devices using ECC Algorithm

2019 ◽  
pp. 130-135
Author(s):  
G. Banu Priya ◽  
K. Dharani
Keyword(s):  
Electronic Devices ◽  
Public Key ◽  
The Public ◽  
Cryptographic Algorithm ◽  
Private Data ◽  
Encryption And Decryption ◽  
Cryptographic Algorithms ◽  
Cryptographic Keys ◽  
Symmetric Key ◽  
Secure Transmission

In recent days securing the data while transferring through electronic devices from one end to the other has became a challenging task to both sender and the receiver. During the transmission of private data over the electronic devices may be hacked some times by the hackers. The data can be secured by using the cryptographic concept. This paper is about how the data are protected while transferring the data from one electronics devices to another using the ECC algorithm. Cryptographic algorithms plays an important role in securing the data against malicious attacks. The main goal of cryptography is not only to secure data from being hacked or attacked also it can be used for authentication of users. There are two types of cryptographic algorithms namely Symmetric key cryptographic algorithms and Asymmetric key cryptographic algorithms. Symmetric key cryptographic algorithm uses the only one key for both encryption and decryption process, where as Asymmetric cryptographic algorithm uses two different keys for encrypting and decrypting the messages. The public key is made publicly available and can be used to encrypt messages. The private key is kept secret and can be used to decrypt the received messages. Nowadays, many electronic devices like electronic phones, tablets, personal computers are in the workplace for transferring the data. Elliptical curve cryptography (ECC) is a public key encryption technique based on elliptic curve theory that can be used to create privacy, integrity and confidentiality, faster, smaller, and more efficient cryptographic keys.

Study on TEA Encryption for Public Communication Network Wireless Remoter

2014 ◽  
Vol 565 ◽  
pp. 179-182 ◽  
Author(s):  
Yue Tao Ge ◽  
Xiao Ming Liu ◽  
Xiao Tong Yin
Keyword(s):  
Communication Network ◽  
Data Transmission ◽  
Communication Protocol ◽  
Encryption Algorithm ◽  
Public Communication ◽  
The Public ◽  
Encryption And Decryption

In order to realize wireless remoter not only securely but also quickly data transmission in the public communication network, the Tiny Encryption Algorithm (TEA) encryption and decryption algorithm is studied in this paper and the properties of TEA are analyzed. According to communication protocol of remoter, encryption and decryption program process are designed. Because of TEA encryption, remoter transmitter and receiver can communicate strongly in the public communication network.

scholarly journals Encryption and Decryption Algorithms in Symmetric Key Cryptography Using Graph Theory

2021 ◽  
Vol 58 (1) ◽  
pp. 3420-3427
Author(s):  
P. A. S. D. Perera, G. S . Wijesiri
Keyword(s):  
Graph Theory ◽  
Digital Technology ◽  
Secret Key ◽  
Symmetric Cryptography ◽  
Asymmetric Cryptography ◽  
Encryption And Decryption ◽  
Symmetric Key ◽  
Original Message ◽  
Symmetric Key Cryptography ◽  
Form Graph

The present-day society depends heavily on digital technology where it is used in many applications such as banking and e-commerce transactions, computer passwords, etc. Therefore, it is important to protect information when storing and sharing them. Cryptography is the study of secret writing which applies complex math rules to convert the original message into an incomprehensible form.  Graph theory is applied in the field of cryptography as graphs can be simply converted into matrices There are two approaches of cryptography; symmetric cryptography and asymmetric cryptography. This paper proposes a new connection between graph theory and symmetric cryptography to protect the information from the unauthorized parties. This proposed methodology uses a matrix as the secret key which adds more security to the cryptosystem. It converts the plaintext into several graphs and represents these graphs in their matrix form. Also, this generates several ciphertexts. The size of the resulting ciphertexts are larger than the plaintext size.

scholarly journals Enhanced Content Based Double Encryption Algorithm Using Symmetric Key Cryptography

2017 ◽  
Vol 10 (2) ◽  
pp. 345-351
Author(s):  
Junestarfield Kynshi ◽  
Deepa Jose
Keyword(s):  
Encryption Algorithm ◽  
Secret Key ◽  
Cipher Text ◽  
Xor Operation ◽  
Symmetric Key ◽  
Binary Addition ◽  
Secure Network ◽  
Symmetric Key Cryptography

This paper aims to solve the problems of the existing technique of the content based double encryption algorithm using symmetric key cryptography. Simple binary addition, folding method and logical XOR operation are used to encrypt the content of a plaintext as well as the secret key.This algorithm helps to achieve the secure transfer of data throught the network. It solved the problems of the existing algorithm and provides a better solution. The plaintext are encrypted using the above methods and produce a cipher text. The secret key is encrypted and shared through secure network and without knowing the secret key it is difficult to decipher the text. As per expected, enhanced encryption algorithm gives better result than the existing encryption algorithm.

scholarly journals Generation of Keystream for Symmetric Cipher using U-Matrix

2019 ◽  
Vol 8 (3) ◽  
pp. 3679-3685
Keyword(s):  
Key Management ◽  
Experimental Results ◽  
Public Key ◽  
Secret Key ◽  
Main Challenge ◽  
Novel Approach ◽  
Symmetric Key ◽  
Symmetric Key Cryptography

Symmetric-key cryptography is a classical cryptography in which both sender and receiver use the same key K to encrypt and decrypt the message. The main challenge between sender and receiver is to agree upon the secret-key which should not be revealed to public. Key management is the major issue in symmetric-key cryptosystem. To avoid these, a novel approach in generating the keystream Ks for any symmetric-key algorithms using U-matrix is proposed in this paper. The advantage of this method is generation of key K from Ks is based on some deterministic procedure which is then applied to DES algorithm and K is not necessarily remembered by both sender and receiver. Further, in each round different key is used as opposed to usage of single key in classical DES. Experimental results clearly show the security is increased when it is compared with classical DES.

scholarly journals Modified Key Generation in RSA Algorithm

2019 ◽  
Vol 8 (2) ◽  
pp. 5311-5315
Keyword(s):  
Public Key ◽  
Key Generation ◽  
The Public ◽  
Rsa Algorithm ◽  
Private Key ◽  
Asymmetric Cryptography ◽  
Encryption And Decryption

RSA Algorithm is one of the widely used asymmetric cryptography. But with several conducts of the different studies, factorization attack based on the value of modulo ‘n’ and based on the public key, the value of the private key is vulnerable. With this, the study modified the RSA Algorithm based on modulo and the public key. The modulo transformed into a new value that produced a compound result in the factorization process. At the same time, the public key has been modified by choosing randomly from collected values and transformed to a different value making it a better-hidden private key. The two algorithms compared in terms of factorization, encryption and decryption, and speed. The modification of the RSA Algorithm based on modulo and public key produced a new two-tier scheme in terms of factorization, and encryption and decryption process. The new scheme in the result is resistant to factorization and has a new scheme of private key hiding.

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