scholarly journals FPGA Based OTP Generation System for Data Security

2020 ◽  
Vol 8 (5) ◽  
pp. 1836-1839
Keyword(s):  
Conventional Method ◽  
Data Security ◽  
Hash Function ◽  
The Internet ◽  
Generation System ◽  
Replay Attack ◽  
Aes Algorithm ◽  
Cipher Text ◽  
Cryptographic Algorithm ◽  
One Time Password

The password system is the most conventional method among validation techniques on the internet and is operated more easily and effectively than other methods. However, it is a vulnerable method against attacks such as eavesdropping or replay attack. To prevail over this problem, OTP (One Time Password) technique is used. The most popular OTP is HOTP algorithm, which is based on one-way hash function SHA-1. The recent researches show the weakness of the hash function. So, in this paper we created a module which uses another cryptographic algorithm. Cryptography in the current world serves an important role in data security. Cryptography means writing of secret codes (cipher text) which is in an unintelligible form and cannot be read unless we have a perfect key to decode it. The proposed method is AES algorithm (128 bit) followed by Middle Square method to generate an OTP. As OTP is a 4-6 bit number we will decrease the AES output to a 4-6 bit through Middle Square method and this OTP can be used as a security tool in many cases like online transaction purposes.

AES Enhanced by Output Feedback Block Mode Operation

2020 ◽  
Vol 1 (1) ◽  
pp. 11-22
Author(s):  
Asaad A. Hani
Keyword(s):  
Output Feedback ◽  
Data Security ◽  
New Technology ◽  
Advanced Encryption Standard ◽  
The Internet ◽  
Secret Key ◽  
Aes Algorithm ◽  
Mode Operation ◽  
Federal Information Processing Standard ◽  
Exclusive Or

There is a great research in the field of data security these days. Storing information digitally in the cloud and transferring it over the internet proposes risks of disclosure and unauthorized access; thus, users, organizations, and businesses are adapting new technology and methods to protect their data from breaches. In this paper, we introduce a method to provide higher security for data transferred over the internet, or information based in the cloud. The introduced method for the most part depends on the Advanced Encryption Standard (AES) algorithm, which is currently the standard for secret key encryption. A standardized version of the algorithm was used by The Federal Information Processing Standard 197 called Rijndael for the AES. The AES algorithm processes data through a combination of exclusive-OR operations (XOR), octet substitution with an S-box, row and column rotations, and MixColumn operations. The fact that the algorithm could be easily implemented and run on a regular computer in a reasonable amount of time made it highly favorable and successful. In this paper, the proposed method provides a new dimension of security to the AES algorithm by securing the key itself such that even when the key is disclosed; the text cannot be deciphered. This is done by enciphering the key using Output Feedback Block Mode Operation. This introduces a new level of security to the key in a way, in which deciphering the data requires prior knowledge of the key and the algorithm used to encipher the key for the purpose of deciphering the transferred text.

Hardware Implementation of AES Algorithm with Logic S-box

2017 ◽  
Vol 26 (09) ◽  
pp. 1750141 ◽  
Author(s):  
Soufiane Oukili ◽  
Seddik Bri
Keyword(s):  
Data Security ◽  
High Speed ◽  
Hardware Implementation ◽  
Network Applications ◽  
Aes Algorithm ◽  
Communication Techniques ◽  
High Speed Network ◽  
Cryptographic Algorithm ◽  
Hardware Implementations ◽  
Field Programmable

Cryptography has an important role in data security against known attacks and decreases or limits the risks of hacking information, especially with rapid growth in communication techniques. In the recent years, we have noticed an increasing requirement to implement cryptographic algorithms in fast rising high-speed network applications. In this paper, we present high throughput efficient hardware implementations of Advanced Encryption Standard (AES) cryptographic algorithm. We have adopted pipeline technique in order to increase the speed and the maximum operating frequency. Therefore, registers are inserted in optimal placements. Furthermore, we have proposed 5-stage pipeline S-box design using combinational logic to reach further speed. In addition, efficient key expansion architecture suitable for our proposed design is also presented. In order to secure the hardware implementation against side-channel attacks, masked S-box is introduced. The implementations had been successfully done by virtex-6 (xc6vlx240t) Field-Programmable Gate Array (FPGA) device using Xilinx ISE 14.7. Our proposed unmasked and masked architectures are very fast, they achieve a throughput of 93.73 Gbps and 58.57 Gbps, respectively. The obtained results are competitive in comparison with the implementations reported in the literature.

scholarly journals A Survey of Different Steganography Technique using Cryptographic Algorithm

2018 ◽  
Vol 7 (2) ◽  
pp. 40-43
Author(s):  
Prakhar Agrawal ◽  
Arvind Upadhyay
Keyword(s):  
Data Security ◽  
Image Steganography ◽  
The Other ◽  
Sensitive Information ◽  
Hidden Information ◽  
Cipher Text ◽  
Other Hand ◽  
Cryptographic Algorithm ◽  
Secure Data ◽  
Hide Data

Steganography and cryptography are two major aspects of data security . In this paper we are going to provide the survey of different techniques of LSB based Steganography that used cryptography algorithms to secure sensitive information. Steganography is used to hide data and Cryptography is used to encrypt the data. Although cryptography and steganography individually can provide data security, every of them has a drawback. Drawback associated with Cryptography is that, the cipher text looks meaningless, so the unintended user can interrupt the transmission or make more careful checks on the information from the sender to the receiver. Drawback associated with Steganography is that when the presence of hidden information is revealed or even suspected, the message is become known[1].By combining these two methods we can solve both of the above problem. First we encrypt the data using any cryptography technique and then embed the encrypted text into the image. Steganography is the process which hides the presence of secure data during communication. On the other hand cryptography is encrypting and decrypting of secure data and information with a secrete key so that no one can be understand the message directly.

scholarly journals Improved Approach of Rail Fence for Enhancing Security

2020 ◽  
Vol 9 (9) ◽  
pp. 583-585
Keyword(s):  
The Internet ◽  
Communication Tool ◽  
Huge Amount ◽  
Global Village ◽  
Plain Text ◽  
Communication Framework ◽  
Cipher Text ◽  
Cryptographic Algorithm ◽  
Safe Approach ◽  
The Web

In the era of a global village, a huge amount of people are connected to the web through their PC, mobile and any type of communication tool for communication purposes, hence we require a safe approach that provides security and protection from unauthorized clients and misuses of data and information. Cryptography is a widespread technique to guarantee security for the internet-based communication framework. Many cipher technique have developed but the rail Fence is the simplest and amusing cryptographic algorithm until now. In this technique, the plain text is organized as crosswise and read it from top to the bottom row produces the cipher text. An inadequate quantity of keys is its weakness. This paper redesigned the current rail fence by applying the three basic phases: substitution phase once and transposition phases uses twice. The proposed technique ensures that the resultant cipher text is a fusion of various symbols precise by a chart. The proposed algorithm eliminates the limitation of the existing algorithm and significantly improves the performance by transforming the plain text unrecognizable and unpredictable.

scholarly journals An Efficient Encryption Implementation Using AES Algorithm Techniques

2018 ◽  
Vol 3 (1) ◽  
pp. 61-70
Author(s):  
Rajamohan Parthasarathy ◽  
◽  
Seow Soon Loong ◽  
Preethy Ayyappan ◽  
◽  
...  
Keyword(s):  
Data Encryption ◽  
Advanced Encryption Standard ◽  
Original Form ◽  
Aes Algorithm ◽  
Cipher Text ◽  
Cryptographic Algorithm ◽  
Cryptographic Keys ◽  
Cadence Tool ◽  
Federal Information Processing Standard ◽  
Symmetric Block

The AES algorithm is a symmetric block cipher that can encrypt, (encipher), and decrypt, (decipher), information. Encryption converts data to an unintelligible form called cipher-text. Decryption of the cipher-text converts the data back into its original form, which is called plaintext. The AES algorithm is capable of using cryptographic keys of 128, 192, and 256 bits to encrypt and decrypt data in blocks of 128 bits. The National Institute of Standards and Technology, (NIST), solicited proposals for the Advanced Encryption Standard, (AES). The AES is a Federal Information Processing Standard, (FIPS), which is a cryptographic algorithm that is used to protect electronic data. Advanced Encryption Standard (AES), specifying an Advanced Encryption Algorithm to replace the Data Encryption standard (DES) the Expired in 1998. NIST has solicited candidate algorithms for inclusion in AES, resulting in fifteen official candidate algorithms of which Rijndael was chosen as the Advanced Encryption Standard. Some of these implementations are optimized for speed, some for area, some for configurability, and some for low-power applications. This is carried out in the Cadence Tool with NC simvision software.

scholarly journals Cryptography: Security and Integrity of Data Management

2021 ◽  
Vol 1 (2) ◽  
pp. 1-9
Author(s):  
Faisal Abbasi ◽  
Keyword(s):  
World Wide Web ◽  
Data Management ◽  
Data Security ◽  
World Wide ◽  
Visual Cryptography ◽  
Internet Banking ◽  
The Internet ◽  
Digital Information ◽  
Unauthorized Access ◽  
Aes Algorithm

Internet always deals with data. Basically, data is any type of digital information that has been stored in the servers. With the advancement of technology, billion tons of da-ta have been accumulated over the internet. Protection of these data is very crucial as; theft of these data will lead to damages beyond imagination. Data Security is protection of these data and privacy, which prevent hacker from unauthorized access to computers, applications, and data servers. Data security is achieved by implementing Cryptography. Cryptography is a technique in which data is encrypted and stored in the databases, so that if by chance anyone gets access to these data, it will of no use to them. There are many cryptography algorithms that are widely used to encrypt and decrypt data, some of them are AES algorithm, stream ciphers, DES algorithms, etc. The concept of cryptography is not only limited to text encryption but also it has a wide application in visual cryptography, watermarking, steganography, etc. Now a day’s security of communication has become very important, especially after people have started using internet banking. Everything on world wide web is all about confidentiality, integrity, and authentication.

scholarly journals Password Data Authentication Using a Combination of MD5 and Playfair Cipher Matrix 13x13

2020 ◽  
Vol 1 (2) ◽  
pp. 33-36
Author(s):  
Bayu Priyatna ◽  
April Lia Hananto
Keyword(s):  
Data Security ◽  
Hash Function ◽  
Avalanche Effect ◽  
Security Issues ◽  
Cryptographic Algorithm ◽  
Data Authentication ◽  
Message Digest ◽  
Collision Attacks ◽  
Original Message ◽  
Effect Technique

Data security and confidentiality are the most important things that must be considered in information systems. To protect the cryptographic algorithm reliability it uses. MD5 is one technique that is widely used in password data security issues, which algorithm has many advantages including. MD5 has a one-way hash function so that the message has been converted to a message digest, and it is complicated to restore it to the original message (plaintext). In addition to the advantages of MD5 also has a variety of shortcomings including; very easy to solve because MD5 has a fixed encryption result, using the MD5 modifier generator will be easily guessed, and MD5 is not proper because it is vulnerable to collision attacks. The research method used in this study uses Computer Science Engineering by conducting experiments combining two cryptographic arrangements. The results obtained from this study after being tested with Avalanche Effect technique get ciphertext randomness results of 43.69%, which tends to be very strong to be implemented in password data authentication.

scholarly journals An integrated approach for enhancing data security

2018 ◽  
Vol 7 (2) ◽  
pp. 880
Author(s):  
G Manikandan ◽  
R Jeeva Dharani ◽  
R Maya
Keyword(s):  
Information Security ◽  
Data Security ◽  
Virtual World ◽  
Security Analysis ◽  
Integrated Approach ◽  
The Internet ◽  
Plain Text ◽  
Cryptographic Algorithm ◽  
Cryptographic Techniques ◽  
The Web

Information security is a key challenge in today’s information era where a huge volume of data is being generated on the internet as a result of the online transaction. This data needs to be protected from the unauthorized users on the web. Cryptography is used to ensure the confidentiality and integrity of data in the virtual world. The strength of the cryptographic algorithm relies on the complexity involved in retrieving the original content from the unintelligible information. The system proposed in this paper focuses on the use of a different mechanism to increase complexity involved in the cryptanalysis. Different cryptographic techniques are used to create a modified plain text and modified key. The newly generated key is used to encrypt the modified plaintext to generate the ciphertext. From the security analysis, it is evident that the time taken for cryptanalysis by the proposed scheme is more when compared with the existing systems.  

scholarly journals Data Security using 128-bit Advanced Encryption Standard Algorithm

2018 ◽  
Author(s):  
Andysah Putera Utama Siahaan ◽  
Virdyra Tasril
Keyword(s):  
Data Security ◽  
Advanced Encryption Standard ◽  
Original Form ◽  
Standard Algorithm ◽  
Aes Algorithm ◽  
Cryptographic Algorithm ◽  
Technological Advances ◽  
Secure Data ◽  
The Right ◽  
The Way

The development of computer and telecommunications technology has experienced the significant change inprogress. It can be seen that technology has become a necessity because technological advances can accomplishtasks quickly, accurately, and efficiently. In line with the development of these technologies, it increasinglychanges the way people communicate. There needs to be security protection to protect data from the threat ofwild parties. Cryptography is the right method to secure data. One method that can be used is the AdvancedEncryption Standard (AES). This method is an excellent classical cryptographic algorithm that can be used toidentify data. AES algorithm is a symmetric ciphertext block that can encrypt and decrypt information quickly.Encryption changes data that can no longer be read called ciphertext; instead, decryption is changing theciphertext data into the original form that we know as plaintext. The AES algorithm has several key modelssuch as 128, 192, and 256 bits to encrypt and decrypt data on 128-bit message blocks. This study uses a 128-bitkey. AES encryption results can be trusted as one of the fast and powerful encryption methods.

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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