Lightweight block cipher algorithms are vital for constrained environment. It is easy to propose an algorithm that optimize any two factors like (security and cost), (security and performance) and (cost and performance) but it is difficult to optimize three factors together at the same time. In this paper, we propose a new lightweight block cipher algorithm called OLBCA. PRESENT lightweight block cipher algorithm is chosen because it is one of the most common and famous lightweight algorithms. Also, the International Organization for Standardization and the International Electro technical Commission (ISO/IEC 29192-2:2012) declared that PRESENT as a new international standard for lightweight cryptographic methods. We applied three attacks differential, integral attacks and boomerang attack. The results showed that OLBCA is better than PRESENT algorithms in three factors.
The security of the transmitted data is one of the important issues that led to improve cryptosystems. Block ciphers as symmetric key cryptosystems are widely implemented in different applications and devices. Many algorithms had been presented that proposed new designs and enhancements for the block ciphers. Most of these papers based on the differential characteristics that provided by the Differential Distribution table DDT. The implementation of DDT had several points of advantages in design, modify and attack block cipher. Even with larger block size of some cipher families, the Partial Differential Distribution Table (PDDT) is implemented to override the big block size. The comparison results showed that both of DDT and PDDT are efficient tools that provide important differential characteristics that may implemented with accompanied of different function and deep learning models.
Resource efficient cryptographic p fundamental for realizing both security a embedded systems like RFID (Radio-Frequen tags and sensor nodes. Among those primi block cipher plays a major role to secure RF the common lightweight block ciphers is PR paper, we attended both conditions of PRES box S-box and those conditions of 4-bit studied and analyzed thoroughly in relatio differential cryptanalysis. The results sho conflict in one of the conditions of PRESENT Keywords: S-box, PRESENT lightweight b cryptanalysis and differential cryptanalysis.I.
<span>This research aims to measure the role of social networks in influencing purchasing decisions among consumers in Kuwait; the research used the quantitative methods, and analytical the technique to get the results, and the research developed a measure to study the relationship between the variables to the study and selection of a sample of consumers of (100). The results indicated that the social networking variables (exchange of information, evaluation of product) possess influence on purchasing decisions. Furthermore, the results indicate that majority of respondents do their digital scanning more often before intend to go to the store. The unexpected results came from the question “traditional advertising (TV, Newspaper, Magazine, Billboards) are more effective than the social networking; 23% agreed, 36% said no, and 41% said sometimes. In light of these findings, the study made a series of recommendations; the most important are; The executives and sales representatives need to understand the benefits offered by social networks, and understand the advantages and functions and tools of social communication, and knowing how to apply them effectively and efficiently, and then use the appropriate social networking tool.</span>
Lightweight block cipher algorit constrained environment. Substitution box essential constituent of many lightweigh algorithms and it is the only nonlinear part. create confusion in the plaintext during encryption. In this research, a new way of key is proposed by choosing one S-box out of Preliminary analysis of linear and differentia showing that the proposed algorithm is more PRESENT S-box. Also, the complexity of th box in each round is 2 8 while the complexity algorithm S-box is 2 12 in each round.
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