scholarly journals Pengamanan Data Teks Menggunakan Algoritma DES Berbasis Android

2020 ◽  
Vol 4 (1) ◽  
pp. 110
Author(s):  
Barany Fachri ◽  
Roy Martin Sembiring
Keyword(s):  
Text Message ◽  
Data Encryption ◽  
Data Encryption Standard ◽  
The Public ◽  
Size Limit ◽  
Standard Algorithm ◽  
The World

Android smartphone is certainly no stranger to the public and of course has spread widely to the world. Android smartphone has many applications in it and also has the function of each of these applications. One application that is commonly used is sending SMS, which functions as sending and receiving data quickly. SMS is a text message that at the time of sending has been limited and set its size, the size limit is 160 characters per SMS. But every use and use of SMS is certainly subject to shipping fees that have been determined from the operator. With this, security is one of the most important aspects to maintain the confidentiality and authenticity of the SMS messages so that they avoid being tapped, stolen or irresponsible. So it is very necessary to apply security in this SMS application that uses cryptographic DES (Data Encryption Standard) algorithm so that messages sent to their destinations can be kept confidential and authentic

scholarly journals Formalization of the Data Encryption Standard

2012 ◽  
Vol 20 (2) ◽  
pp. 125-146 ◽  
Author(s):  
Hiroyuki Okazaki ◽  
Yasunari Shidama
Keyword(s):  
United States ◽  
Information Processing ◽  
Block Cipher ◽  
The United States ◽  
Data Encryption ◽  
National Bureau ◽  
Data Encryption Standard ◽  
The World ◽  
Federal Information Processing Standard

Summary In this article we formalize DES (the Data Encryption Standard), that was the most widely used symmetric cryptosystem in the world. DES is a block cipher which was selected by the National Bureau of Standards as an official Federal Information Processing Standard for the United States in 1976 [15].

scholarly journals Improved Structure of Data Encryption Standard Algorithm

2020 ◽  
Vol 55 (5) ◽  
Author(s):  
Mays M. Hoobi
Keyword(s):  
Data Encryption ◽  
Encryption Algorithm ◽  
Key Generation ◽  
Brute Force ◽  
Generation System ◽  
Data Encryption Standard ◽  
Standard Algorithm ◽  
Standard Data ◽  
Cipher Text ◽  
Major Data

The Internet is providing vital communications between millions of individuals. It is also more and more utilized as one of the commerce tools; thus, security is of high importance for securing communications and protecting vital information. Cryptography algorithms are essential in the field of security. Brute force attacks are the major Data Encryption Standard attacks. This is the main reason that warranted the need to use the improved structure of the Data Encryption Standard algorithm. This paper proposes a new, improved structure for Data Encryption Standard to make it secure and immune to attacks. The improved structure of Data Encryption Standard was accomplished using standard Data Encryption Standard with a new way of two key generations. This means the key generation system generates two keys: one is simple, and the other one is encrypted by using an improved Caesar algorithm. The encryption algorithm in the first 8 round uses simple key 1, and from round 9 to round 16, the algorithm uses encrypted key 2. Using the improved structure of the Data Encryption Standard algorithm, the results of this paper increase Data Encryption Standard encryption security, performance, and complexity of search compared with standard Data Encryption Standard. This means the Differential cryptanalysis cannot be performed on the cipher-text.

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