scholarly journals Improved RC6 Block Cipher Based on Data Dependent Rotations

2022 ◽  
Vol 70 (1) ◽  
pp. 1921-1934
Author(s):  
Osama S. Faragallah ◽  
Ibrahim F. Elashry ◽  
Ahmed AlGhamdi ◽  
Walid El-Shafai ◽  
S. El-Rabaie ◽  
...  
Keyword(s):  
2015 ◽  
Vol 52 (2) ◽  
pp. 221-232
Author(s):  
Pál Dömösi ◽  
Géza Horváth

In this paper we introduce a novel block cipher based on the composition of abstract finite automata and Latin cubes. For information encryption and decryption the apparatus uses the same secret keys, which consist of key-automata based on composition of abstract finite automata such that the transition matrices of the component automata form Latin cubes. The aim of the paper is to show the essence of our algorithms not only for specialists working in compositions of abstract automata but also for all researchers interested in cryptosystems. Therefore, automata theoretical background of our results is not emphasized. The introduced cryptosystem is important also from a theoretical point of view, because it is the first fully functioning block cipher based on automata network.


2016 ◽  
Vol 11 (2) ◽  
pp. 92
Author(s):  
Fatma Zayen Sbiaa ◽  
Medien Zeghid ◽  
Sonia Kotel ◽  
Rached Tourki ◽  
Mohsen Machhout ◽  
...  
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Author(s):  
Huiqian JIANG ◽  
Mika FUJISHIRO ◽  
Hirokazu KODERA ◽  
Masao YANAGISAWA ◽  
Nozomu TOGAWA

2007 ◽  
Vol 1 (4) ◽  
pp. 46-61
Author(s):  
Sufyan T. Faraj Al-janabi ◽  
Keyword(s):  

2020 ◽  
Author(s):  
Dedy Agung Prabowo ◽  
Ujang Juhardi ◽  
Bambang Agus Herlambang

Recently, Information technology develops rapidly. It is possible for us to get some informationquickly, properly and efficiently. The information technology also has many advantages fo r people. Theneed for information is increasing according to the need of its users. This proves that informationtechnology can make our job easier and it can help us to save our time particularly for the job thatrelated to information and data processin g. With the increasing use of computer technology today, italso brings up some problems. One of them is security and confidentiality problem which is animportant aspect in an information system. Data security is an important thing in maintaining theconf identiality of particular data that only can be known by those who have right. RC6 is a symmetrickey algorithm which encrypts 128 bit plaintext blocks to 128 bit ciphertext blocks. The encryptionprocess involves four operations which is the critical arit hmetic operation of this block cipher. As alegal state, Indonesia has issued a regulation in a form of laws governing information and electronictransaction or commonly referred to UU ITE. Besides, Islam is a religion that comprehensively givesthe guidan ce of life for people. Islam has provided guidance in the various fields ranging from social,politics, economics and various other fields.


2020 ◽  
Vol 9 (3) ◽  
pp. 1349-1362
Author(s):  
T. K. Maryati ◽  
K. S. N. Atiqoh ◽  
R. Nisviasari ◽  
I. H. Agustin ◽  
Dafik ◽  
...  
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Author(s):  
Tata Ravi Kumar ◽  
◽  
Soo-jung Nam ◽  
Chen Xuesheng ◽  
◽  
...  
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Author(s):  
Sergio Roldán Lombardía ◽  
Fatih Balli ◽  
Subhadeep Banik

AbstractRecently, cryptographic literature has seen new block cipher designs such as , or that aim to be more lightweight than the current standard, i.e., . Even though family of block ciphers were designed two decades ago, they still remain as the de facto encryption standard, with being the most widely deployed variant. In this work, we revisit the combined one-in-all implementation of the family, namely both encryption and decryption of each as a single ASIC circuit. A preliminary version appeared in Africacrypt 2019 by Balli and Banik, where the authors design a byte-serial circuit with such functionality. We improve on their work by reducing the size of the compact circuit to 2268 GE through 1-bit-serial implementation, which achieves 38% reduction in area. We also report stand-alone bit-serial versions of the circuit, targeting only a subset of modes and versions, e.g., and . Our results imply that, in terms of area, and can easily compete with the larger members of recently designed family, e.g., , . Thus, our implementations can be used interchangeably inside authenticated encryption candidates such as , or in place of .


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