scholarly journals PENGAMANAN DATA TEKS MELALUI PERPADUAN ALGORITMA BEAUFORT DAN CAESAR CIPHER

2019 ◽  
Vol 12 (2) ◽  
pp. 149-158
Author(s):  
Muhammad Fadlan ◽  
Sinawati Sinawati ◽  
Aida Indriani ◽  
Evi Dianti Bintari
Keyword(s):  
Data Security ◽  
Data Integrity ◽  
Text Data ◽  
Existing Problems ◽  
Digital Era ◽  
Encryption And Decryption ◽  
Different Types ◽  
Two Stages ◽  
Cryptographic Techniques

The importance of maintaining data integrity and security is one of the challenges in the current digital era. One method that can be used to face this challenge is through cryptography. In cryptography there are several algorithms that can be used, one of which is the Caesar cipher algorithm. This algorithm has several disadvantages, including a limited number of characters of 26 characters. This can make the encryption results easily recognizable by other parties. This study aims to design a proposal for maintaining data security through cryptographic techniques, while addressing the problems inherent in the Caesar cipher algorithm. The combination of Caesar and Beaufort algorithm is done to overcome the existing problems. In addition, a character list of 94 characters was determined to be used in the process of encryption and decryption of text data. The result, through the integration of these two algorithms, the text cipher becomes more difficult to solve. There are two stages of the encryption process by using two different types of Keys for each stage in securing data

scholarly journals Different Methods of Encryption and Decryption

2021 ◽  
Vol 9 (11) ◽  
pp. 170-177
Author(s):  
Pratiksha Satapure
Keyword(s):  
Information Security ◽  
Data Security ◽  
World Wide ◽  
Digital Information ◽  
Crucial Issue ◽  
Hill Cipher ◽  
Encryption And Decryption ◽  
Privacy Measures ◽  
Abstract Data ◽  
Cryptographic Techniques

Abstract: Data is any type of stored digital information. Security is about the protection of assets. Data security refers to protective digital privacy measures that are applied to prevent unauthorized access to computers, personal databases and websites. Cryptography is evergreen and developments. Cryptography protects users by providing functionality for the encryption of data and authentication of other users. Compression is the process of reducing the number of bits or bytes needed to represent a given set of data. It allows saving more data. Cryptography is a popular ways of sending vital information in a secret way. There are many cryptographic techniques available and among them AES is one of the most powerful techniques. The scenario of present day of information security system includes confidentiality, authenticity, integrity, nonrepudiation. The security of communication is a crucial issue on World Wide Web. It is about confidentiality, integrity, authentication during access or editing of confidential internal documents. Keywords: Cryptography, Hill Cipher, Homophonic Substitution Cipher, Monoalphabetic Cipher, Ceaser Cipher.

scholarly journals Preservation of Data Integrity in Public Cloud Using Enhanced Vigenere Cipher Based Obfuscation

2021 ◽  
Author(s):  
A. K. JAITHUNBI ◽  
S. SABENA ◽  
L. SAIRAMESH
Keyword(s):  
Data Privacy ◽  
Data Integrity ◽  
Main Concern ◽  
Public Cloud ◽  
Public Data ◽  
Encryption And Decryption ◽  
Data Masking ◽  
Cryptographic Techniques ◽  
Secure Transmission ◽  
Reduced Time

Abstract Today’s internet world is moves to cloud computing to maintain their public data privately in a secure way. In cloud scenario, many security principles are implemented to maintain the secure transmission of data over the internet. And still, the main concern is about maintaining the integrity of our own data in public cloud. Mostly, research works concentrates on cryptographic techniques for secure sharing of data but there is no such mentioned works are available for data integrity. In this paper, a data masking technique called obfuscation is implemented which is used to protect the data from unwanted modification by data breaching attacks. In this work, enhanced Vigenere encryption is used to perform obfuscation that maintains the privacy of the user’s data. Enhanced Vigenere encryption algorithm combined with intelligent rules to maintain the dissimilarity between the data masking for perform encryption with different set of rules. This work mainly concentrates on data privacy with reduced time complexity for encryption and decryption.

scholarly journals Perancangan Aplikasi Penyandian Pesan Teks dengan Menggunakan Algoritma Digraph Cipher

2020 ◽  
Vol 2 (1) ◽  
pp. 25-34
Author(s):  
Yhopi Suhelna
Keyword(s):  
Data Security ◽  
Data Encryption ◽  
Third Parties ◽  
Security System ◽  
Science And Art ◽  
Encryption And Decryption ◽  
Secure Data ◽  
Cryptographic Techniques

Humans interact with fellow humans using communication. Not everything that is communicated contains a message so that it can be known by many people, sometimes the communication is confidential so that only certain people can know it. The occurrence of data tapping submitted is certainly a problem if the data is confidential, therefore a data security system is needed so that the data cannot be stolen or changed by tappers or crackers. One solution to secure data is to use cryptography. Cryptography is the science and art of maintaining message security when messages are sent from one media to another without experiencing interference from third parties. Through cryptographic techniques, data can be changed into passwords that are not understood and return them back to the original, this process is called data encryption and decryption. This data security process uses the Digraph Cipher method. Some facilities in the Digraph Cipher method are the keys used in the encryption and decryption process are the same (symmetrical) and the decryption process is the opposite of the encryption process.

scholarly journals Implementasi Algoritma Kriptografi Playfair Cipher untuk Mengamankan Data Aset

2021 ◽  
Vol 7 (2) ◽  
pp. 109-114
Author(s):  
Galih Agustian Perdana ◽  
Carudin ◽  
Rini Mayasari
Keyword(s):  
Data Security ◽  
Database Systems ◽  
Data Input ◽  
Important Data ◽  
Digital Era ◽  
Cryptographic Algorithm ◽  
Encrypt Data ◽  
Encryption And Decryption ◽  
Asset Data

Data is very important for humans, data is also needed to collect information. But given that cybercrime crime has occurred in the digital era today. Therefore, data security is very important to be considered. Inside the company has important data. One of the companies in Karawang, namely PT Adyawinsa Stamping Industries, has a data input application that is the company's asset data. Many data crime problems make database systems vulnerable to manipulation. Therefore, the implementation of data security for asset data is implemented using Playfair Cipher cryptography. The Playfair Cipher encrypts letter pairs (bigram or digraph) into letter pairs, not single letters as in other classic ciphers. The purpose of this study is an application that is able to encrypt data using the Playfair Cipher cryptographic algorithm and the application is also capable of performing decryption of data in a database that has been encrypted then entering data that has been encrypted into the database. The results of this study indicate that the system built has successfully performed encryption and decryption of asset data against user names and asset names using the Playfair Cipher cryptographic algorithm. There are differences in the results of the decryption tested in this study. However, the application can set the decryption results with the tools contained in the application.

scholarly journals Analisa Frekuensi Hasil Enkripsi Pada Algoritma Kriptografi Blowfish Terhadap Keamanan Informasi

2018 ◽  
Vol 1 (1) ◽  
pp. 11-15
Author(s):  
Ferdy Riza ◽  
Nurmala Sridewi ◽  
Amir Mahmud Husein ◽  
Muhammad Khoiruddin Harahap
Keyword(s):  
Information Security ◽  
Frequency Analysis ◽  
Data Integrity ◽  
Internet Technology ◽  
Encryption Algorithm ◽  
Analysis Approach ◽  
Data Confidentiality ◽  
Text Data ◽  
Distribution Form ◽  
Cryptographic Techniques

The ease of sending data with the development of internet technology technology is now a concern, especially the problem of data confidentiality, integrity and information security. Cryptography is one of the techniques used to maintain data confidentiality and information security, the application of cryptographic techniques for information security and data integrity is highly dependent on the formation of keys. In this study proposed a frequency analysis approach to measure the level of information security of blowfish encryption results to determine the distribution form of each character used in the text and find out the exact frequency of each character used in the test text data. The encryption algorithm and description of blowfish method against plaintext are proven to be accurate, but the longer the key character used will greatly affect the level of information security that came  from encryption process, this is based on the results of the frequency analysis conducted.

scholarly journals Study of Data Security Algorithms using Verilog HDL

2015 ◽  
Vol 5 (5) ◽  
pp. 1092
Author(s):  
M. Sumathi ◽  
D. Nirmala ◽  
R. Immanuel Rajkumar
Keyword(s):  
Performance Evaluation ◽  
Data Security ◽  
Hardware Description Language ◽  
Performance Study ◽  
Verilog Hdl ◽  
Description Language ◽  
Quartus Ii ◽  
Encryption And Decryption ◽  
Different Types ◽  
Hardware Description

This paper describes an overview of data security algorithms and its performance evaluation. AES, RC5 and SHA algorithms have been taken under this study. Three different types of security algorithms used to analyze the performance study. The designs were implemented in Quartus-II software. The results obtained for encryption and decryption procedures show a significant improvement on the performance of the three algorithms. In this paper, 128-bit AES, 64-bit of RC5 and 512-bit of SHA256 encryption and Decryption has been made using Verilog Hardware Description Language and simulated using ModelSim.

scholarly journals Data storage lock algorithm with cryptographic techniques

2019 ◽  
Vol 9 (5) ◽  
pp. 3843
Author(s):  
Anitha K L ◽  
T.R. Gopalakrishnan Nair
Keyword(s):  
Cloud Computing ◽  
Data Storage ◽  
Data Security ◽  
Data Centers ◽  
Security Issues ◽  
Confidential Data ◽  
Different Types ◽  
Multi Level ◽  
Cryptographic Techniques ◽  
Security Concern

<span>The cloud computing had its impact far and wide, and Enterprise solutions are getting migrated to different types of clouds. The services are delivered from the data centers which are located all over the world. As the data is roaming with less control in any data centers, data security issues in cloud are very challenging. Therefore we need multi-level authentication, data integrity, privacy and above all encryption to safeguard our data which is stored on to the cloud. The data and applications cannot be relocated to a virtual server without much degree of security concern as there can be much confidential data or mission-critical applications. In this paper, we propose Data Storage Lock Algorithm (DSLA) to store confidential data thereby provides secure data storage in cloud computing based on cryptographic standards.</span>

scholarly journals A Study on Cryptographic Techniques

2020 ◽  
pp. 321-327
Author(s):  
Anjali Krishna A ◽  
L. C. Manikandan
Keyword(s):  
Data Security ◽  
Secure Communication ◽  
Encryption And Decryption ◽  
Current Scenario ◽  
Cryptographic Techniques ◽  
Day By Day

In current scenario, to store data securely on online is a tedious task as a result proper security over the network. Cryptography is a technique that masks the data over the channel of communication. Hiding the data to outsiders is an art. As the technology grows day by day, the need for data security over the channel of communication is greatly increased. Several cryptographic schemes are used for secure communication. The cryptographic technique and various algorithms are used to ensure the application has the necessary security. Cryptography is the science of both encryption and decryption. This paper describes all of the cryptographic techniques in detail.

scholarly journals Cryptography with Layered Algorithms for Text Security on Android

2020 ◽  
Vol 3 (2) ◽  
pp. 35-39
Author(s):  
Ery Safrianti ◽  
Fernanda Fitriansyah
Keyword(s):  
Data Security ◽  
Text Messages ◽  
Digital Data ◽  
Original Text ◽  
Short Message ◽  
Test Results ◽  
Text Data ◽  
Android Applications ◽  
Data Theft ◽  
Cryptographic Techniques

Android phone is one of the most widely used telecommunications devices today. The exchange of various forms of information ranging from text, sound, images and video through this media is inseparable from the threat of criminal crime through digital data theft. Data security aspects are very important to be considered, one of which is data in the form of text. Text data is commonly used in short message services (SMS), chat in various Android applications or in the use of logins and passwords. This research will create an application on Android for securing text data through cryptographic techniques with a layered algorithm using three types of algorithms namely Caesar, Blowfish and AES Algorithms (Advanced Standard Encryption). This application can run on Android 5.0 (lollipop) or above, which can be used to encrypt and decrypt text messages. The test results show that the results of the initial text that was encoded through the encryption process can be safely returned by the decryption process without the slightest mistake with the original text.  The encryption test for capital letters, numbers, and punctuation can be completely decrypted.

scholarly journals Rancang Bangun Aplikasi Keamanan Data Menggunakan Metode AES Pada Smartphone

2017 ◽  
pp. 29-35
Author(s):  
Amir Mahmud Hasibuan
Keyword(s):  
Computer Technology ◽  
Data Security ◽  
Advanced Encryption Standard ◽  
Text Data ◽  
Aes Algorithm ◽  
Science And Art ◽  
Cryptographic Algorithm ◽  
Encryption And Decryption ◽  
The World ◽  
Security Application

Cryptography is one technique used to improve the security aspects of information. Cryptography is the study of science and art to maintain a message or data information so that the data is safe. Cryptography supports the needs of two aspects of information security, namely secrecy (protection of the confidentiality of information data) and authenticity (protection against counterfeiting and changing unwanted information). Along with the development of computer technology, the world of information technology requires a stronger and safer cryptographic algorithm. Currently the Advanced Encryption Standard (AES) is used as the latest standard cryptographic algorithm. For this reason, it is necessary to prepare an application that can secure a data and maintain its confidentiality so that it is not known by unauthorized parties. One alternative that can be used in making a data security application is by applying the Advanced Encryption Standard (AES) algorithm. hence the design of a data security application on a smartphone by designing the application of encryption and description of text data using the AES method. This method does a round of 10 rounds to get the results of encryption and decryption in the text.

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