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International Conference on Electrical and Computing Technologies and Applications (ICECTA)

作者： Cordova, Ronald S. Maata, Rolou Lyn R. Halibas, Alrence S. Gulf Coll Fac Comp Sci Muscat Oman

ISBN: (纸本)9781728155326

Data, information, and knowledge are valuable assets of most business organizations. Protecting and securing these assets is crucial to their success. Computer security systems have increasingly become an integral part of the digital business. These systems have been used to safeguard key assets of enterprises from computer security threats. Secured storage and transmission of electronic data over a communication network can only be achieved through the use of cryptography techniques that offer strong data protection. In this paper, the researchers illustrate the design and implementation of a newly developed security system based on the blowfish algorithm. The algorithm was tested with different types of electronic data to prove its time efficiency and accuracy. The results were gathered from small data and the next direction of this research is to simulate the system with big data.

关键词： network security blowfish algorithm data communication computer security

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blowfish algorithm For Patient Health Monitoring

Blowfish Algorithm For Patient Health Monitoring

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IEEE International Conference on Inventive Computation Technologies (ICICT)

作者： Kondawar, Snehal S. Gawali, Dhanashri H. NBN Sinhgad Sch Engn Elect & Telecommun Dept Pune Maharashtra India

Wireless medical devices are very useful for monitoring the health of patients continuously. Wearable medical devices come in contact with the harsh environment many times. Hence, security of these devices while sending data wirelessly is of utmost importance. The proposed system is based on security with low power consumption for portable devices. The proposed system includes collecting the data from patient's body parameters, processing of data, encryption, and transmitting data wirelessly. It also includes decryption, and finally, displaying the data on the computer. The encryption is done by implementing the cryptographic algorithm, i.e., blowfish in the ARM7 controller. The decryption is done on the computer at doctor's side. The data from sensors was securely sent to the receiver with low power consumption. The system can be made available at low cost so that more patients can get benefits.

关键词： blowfish algorithm health monitoring power consumption wearable medical devices wireless security

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Chaotic map-embedded blowfish algorithm for security enhancement of colour image encryption

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NONLINEAR DYNAMICS 2015年第4期81卷 2079-2093页

作者： Jawad, Lahieb Mohammed Sulong, Ghazali Univ Teknol Malaysia Fac Comp Media & Games Innovat Ctr Excellence MaGIC X Skudai 81310 Kagawa Malaysia

The quest for achieving an accurate and efficient algorithm in enhancing the security of colour image encryption is never-ending. We enhance the security level of conventional blowfish algorithm (BA) for colour image encryption by modifying it with new F-function. The dynamic S-box and XOR operator are generated from the F-function via four-dimensional hyper-chaotic map, and the number of iterations is dramatically reduced from sixteen to four to simplify the processing complexity. The block secret keys of varying space size are randomly created. The computation is performed using Matlab R2008a codes on eight images of size pixels obtained from standard USC-SIPI Image Database. The security of the proposed method exhibits notable enhancement with increasing block size. Performance analyses reveal a correlation coefficient less than 0.0016 and entropy greater than 7.9993. Furthermore, the distribution of RGB channel for image Lena displays sizeable security improvements. Correlation between image pixels is significantly decreased with higher entropy. In comparison with previous works, the proposed algorithm is found to exhibit superior performance for colour image encryption than the conventional BA.

关键词： Colour image encryption blowfish algorithm Chaotic map Image entropy Block image encryption correlation

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A Modified Approach of blowfish algorithm Based On S-Box Permutation using Shuffle algorithm 2018

A Modified Approach of Blowfish Algorithm Based On S-Box Per...

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7th International Conference on Network, Communication and Computing (ICNCC)

作者： Corpuz, Reynaldo R. Gerardo, Bobby D. Medina, Ruji P. Technol Inst Philippines 938 Aurora Blvd Quezon City 1109 Philippines West Visayas State Univ Iloilo Philippines

ISBN: (纸本)9781450365536

blowfish algorithm has been widely analyzed and gradually accepted as a good and powerful cryptographic algorithm offering several advantages among which is suitability and efficiency for implementing hardware and software;it satisfies the basic requirements in cryptography with high in attack immunity and relatively low in algorithm complexity. In spite of undeniable success in cryptography, blowfish (BF) still has drawbacks in the substitution and permutation of values in the substitution box (Sbox) that can affect the encryption and decryption of the algorithm. This study adopted Fisher-Yates Shuffle (FYS) also known as Knuth shuffle (KS) for the permutation of S-box, and a modified Function F was used to enhance the BF algorithm to address this issue. The results show that Modified approach in blowfish algorithm outperformed the Original blowfish in the encryption, decryption, and throughput of the algorithm.

关键词： Shuffle algorithm Fisher-Yates Shuffle blowfish algorithm S-box Function F Substitution-permutation networks

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Using a Modified Approach of blowfish algorithm for Data Security in Cloud Computing 2018

Using a Modified Approach of Blowfish Algorithm for Data Sec...

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6th International Conference on Information Technology - IoT and Smart City (ICIT)

作者： Corpuz, Reynaldo R. Gerardo, Bobby D. Medina, Ruji P. Technol Inst Philippines 938 Aurora Blvd Quezon City 1109 Philippines West Visayas State Univ Iloilo Philippines

ISBN: (纸本)9781450366298

Cloud computing brought remarkable potential changes and excellent opportunities to the information technology industry. It is particularly useful in most of the networked transactions. Cloud computing common issue problems associated with data security. Information is secure if it fulfills the three conditions namely Confidentiality, Integrity and Availability. In cloud computing confidentiality is obtained by cryptography. Symmetric algorithms notably blowfish algorithm displayed undeniable success in cryptography. In this paper, a Modified Approach of blowfish algorithm using Shuffle algorithm was applied and test the encryption, decryption speed, and throughput. The result shows that the higher the performance, the higher the efficiency of encrypting files.

关键词： Cloud Computing blowfish algorithm S-box permutation Shuffle algorithm Encryption Decryption

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Security Aware Data Transaction Using Optimized blowfish algorithm in Cloud Environment

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JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS 2021年第1期30卷

作者： Dinesh, E. Ramesh, S. M. Anna Univ Dept Elect & Commun Engn M Kumarasamy Coll Engn Chennai Tamil Nadu India Anna Univ EGS Pillay Engn Coll Dept Elect & Commun Engn Chennai Tamil Nadu India

Cloud computing has become a growing technique due to its on-demand service and scalable features. Most of the applications of the cloud today are in data storage. Data protection and privacy have thus become a major concern. There are huge risks of storing transaction data on third-party hosts. Service providers need to make right investments in proving and ensuring appropriate security over time. Malicious users can exploit weak spots in the data protection model to increase unauthorized access to data. To overcome the problem, in this paper, security-aware data transaction on the cloud using the blowfish algorithm (BA) is proposed. To improve the security of the system, initially, the proposed system verifies the authentication of the user. After the authentication process, the uploaded data are initially split using a pattern-matching algorithm. Then, the separated data are encrypted with the help of BA. Finally, the encrypted data are stored in the cloud at an optimal location. This method is more secure as the data are column-separated and optimized in the cloud, so it is difficult to attack. This method is highly guaranteed because the user cannot recover the document without authentication checking. The performance of the proposed approach is analyzed in terms of different metrics, namely, memory, encryption and decryption time. The experimental results clearly say that the proposed method took minimum encryption time compared with the existing approach.

关键词： Cloud computing pattern matching technique blowfish algorithm hybrid gray wolf optimization firefly technique

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Hardware Implementation of blowfish algorithm for the Secure Data Transmission in Internet of Things

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Procedia Technology 2016年 25卷 248-255页

作者： Manju Suresh M. Neema MTech student Adi Shankara Institute Of Engineering & Technology Kalady 683574 India Assistant Professor Adi Shankara Institute Of Engineering & Technology Kalady 683574 India

As Internet of Things (IoT) can be broadly used in many fields, the security of IoT is gaining importance. In IoT, all the devices are connected. If a hacker manages to enter the network, he may access confidential datas. So for IoT, an information transmission security mechanism is essential in addition to the authentication mechanism. Beginning with the concept of IoT, its architecture and security issues, this paper analyzes various security mechanisms for IoT and the significance of cryptography in IoT. An efficient cryptographic algorithm “blowfish” is selected based on several comparisons. A modification in blowfish algorithm is presented by changing its Function module ‘F’. Comparison of original and modified blowfish algorithm is done by implementing both in Xilinx Virtex-5 XC5VLX50T FPGA using Verilog HDL and found that modified algorithm is efficient than the original in terms of encryption time by 16.9% and throughput by 18.7%.

关键词： Internet of Things (IoT) cryptography blowfish algorithm

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Secured Data Transmission Using Pareto Optimization Based Lion Swarm Optimization and Double Encryption based blowfish algorithm in WSN 23

Secured Data Transmission Using Pareto Optimization Based Li...

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Proceedings of the 5th International Conference on Information Management & Machine Intelligence

作者： Viji Gripsy.J Kowsalya R Banupriya C V Sathya R Department of Computer Science PSGR Krishnammal College for Women India Department of Computer Science PSG College of Arts & Science India

ISBN: (纸本)9798400709418

The protection of wireless sensor networks is a complex challenge due to the inherent characteristics of the sensors themselves. These sensors are characterized by their low memory capacity, constrained energy resources, and lack of early awareness regarding their specific placement within the distribution environment. In order to safeguard the integrity and confidentiality of data during transmission, it is imperative to uphold fundamental security measures. This duty elucidates many methodologies for safeguarding data transmission. The primary objective of this research endeavor is to ensure the security of the Wireless Sensor Network (WSN). Several studies and approaches have been proposed; nonetheless, the comprehensive understanding of time and safety remains largely unexplored. The current methodologies exhibit limitations in terms of temporal efficiency and the security of Wireless Sensor Networks (WSNs). In order to address the aforementioned concerns, this research study proposes the utilization of the Pareto Optimization Based Lion Swarm Optimization and Double Encryption based blowfish method (PLSO-DEBF) method as a means to enhance overall system performance. The primary contributions of this study encompass the development of a comprehensive system model, the utilization of PLSO-DEBF for the selection of transmission nodes, and the incorporation of secure data transmission inside the system model. By leveraging the efficient algorithms of Wireless Sensor Networks (WSNs), this approach demonstrates enhanced performance.

关键词： blowfish algorithm Data Security Encryption Lion Swarm Optimization Pareto Optimization

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An Enhanced blowfish (eBf) algorithm for Securing x64FileMessage Content 10

An Enhanced BlowFish (eBf) Algorithm for Securing x64FileMes...

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10th IEEE International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM)

作者： Dulla, Godfrey L. Gerardo, Bobby D. Medina, Ruji P. Technol Inst Philippines Aurora Blvd Quezon City Philippines

ISBN: (纸本)9781538677674

Security to information has tremendously changed the way computer and network transactions performed. One of the methods to secure data is through encryption. Encryption transforms information to ciphertext that only authorized user has the knowledge of the key. Some of encryption algorithm includes DES, TripleDES, AES, TEA, Serpent, RC5 and blowfish (Bf). An enhanced blowfish algorithm (eBf) is developed to improve its performance by reducing the number of rounds and increase the block length, variable key length with added transformation and shifting method on selected rounds. Results show that the enhanced blowfish successfully improved its performance with an average of 11.3653% and 9.8028% for encryption and decryption speed respectively. The text file format was used in the simulation in different file sizes with not more than 64kb.

关键词： blowfish algorithm encryption and decryption cryptography algorithm

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Computational Complexity of Modified blowfish Cryptographic algorithm on Video Data

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algorithmS 2022年第10期15卷 373-373页

作者： Adeniyi, Abidemi Emmanuel Misra, Sanjay Daniel, Eniola Bokolo, Anthony, Jr. Precious Cornerstone Univ Dept Comp Sci Ibadan 200223 Nigeria Ostfold Univ Coll Dept Comp Sci & Commun N-1757 Halden Norway Landmark Univ Dept Comp Sci Omu Aran 251103 Nigeria Inst Energy Technol Dept Appl Data Sci N-1777 Halden Norway

Background: The technological revolution has allowed users to exchange data and information in various fields, and this is one of the most prevalent uses of computer technologies. However, in a world where third parties are capable of collecting, stealing, and destroying information without authorization, cryptography remains the primary tool that assists users in keeping their information secure using various techniques. blowfish is an encryption process that is modest, protected, and proficient, with the size of the message and the key size affecting its performance. Aim: the goal of this study is to design a modified blowfish algorithm by changing the structure of the F function to encrypt and decrypt video data. After which, the performance of the normal and modified blowfish algorithm will be obtained in terms of time complexity and the avalanche effect. Methods: To compare the encryption time and security, the modified blowfish algorithm will use only two S-boxes in the F function instead of the four used in blowfish. Encryption and decryption times were calculated to compare blowfish to the modified blowfish algorithm, with the findings indicating that the modified blowfish algorithm performs better. Results: The Avalanche Effect results reveal that normal blowfish has a higher security level for all categories of video file size than the modified blowfish algorithm, with 50.7176% for normal blowfish and 43.3398% for the modified blowfish algorithm of 187 kb;hence, it is preferable to secure data and programs that demand a high level of security with blowfish. Conclusions: From the experimental results, the modified blowfish algorithm performs faster than normal blowfish in terms of time complexity with an average execution time of 250.0 ms for normal blowfish and 248.4 ms for the modified blowfish algorithm. Therefore, it can be concluded that the modified blowfish algorithm using the F-structure is time-efficient while normal blowfish is better in terms of

关键词： time complexity cryptographic algorithms modified blowfish algorithm blowfish algorithm security

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