Text Encryption: Hybrid cryptographic method using Vigenere and Hill Ciphers

Touil, Hamza; Akkad, Nabil El; Satori, Khalid

doi:10.1109/iscv49265.2020.9204095

Cited by 30 publications

(11 citation statements)

References 22 publications

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“…It has two consecutive similar characters in different blocks. The results showed the coherence between these two methods that created a reliable hybrid algorithm, with resistance to various attacks, including statistical attacks [ 11 ]. (Nahar & Chakraborty, 2020) presented a technique for organizing the plain text transversely in the Rail Fence method, so that reading it from the upper row to the lower row leads to the production of the ciphertext.…”

Section: Literature Reviewmentioning

confidence: 95%

Proposed Method for Efficient Block Cipher Cryptography

Alregabo

Ismail

2023

Eximia

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After the use of the Internet and the transmission of files between users expanded, information security became one of the important priorities for securing information by different means and methods. The information encryption comes at the forefront of the techniques used in information security. Encryption has been known since ancient ages. So, traditional methods appeared that quickly and greatly developed. They are still used in many scientific studies and developmental research with the aim of developing new methods for encryption of substitutions and increasing its ability to confront various attacks. The traditional methods were subjected to several attacks that they prompted researchers to develop them and overcome their weaknesses in front of those attacks. Some combinations of these methods are used to design new encryption methods based on overlapping ideas of traditional encryption. This paper sought to use a set of traditional encryption methods in designing a new system. In which, these methods are mixed with modern ideas that help increase the strength of encryption and its ability to face potential attacks. Caesar, Vigenère, Rail Fence, and transpose ciphers, with the idea of cipher cycles and segments and division into two parts in block ciphers. The proposed system relied on the chaotic function Tent map for its random properties in generating a string of keys consisting of 112 random characters in length using Python 3.11 programming language. The text was cut into Blocks of 108 characters. Each Block was divided into two parts. A part of the key was added to each section. A rial fence method was applied. Then Vigenère method with the key is applied. The proposed system processed the original text within the framework of the encryption cycles with the use of substitution in the order of the columns, shifting to the right, and the replacement of the sequence of the elements of each side according to the order of the elements of the other side. After the end of the encrypting cycles, the cipher block is added to the final ciphertext. The operations were repeated for the next block until the last block is finished. For the purpose of decrypting, the previous operations are repeated in reverse order to obtain the original text, by decrypting blocks of the cipher text. The proposed system achieved extreme accuracy in extracting the original text. The system was evaluated by measuring the time and throughput of the encryption and decryption. The encryption and decryption times were short for short texts, which increased with the increase in the length of the text, with a relatively stable encryption and decryption throughput. The system achieved acceptable memory consumption in short texts but increased by the length of the text size. The achieved Avalanche test was less than (50%).

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Section: Literature Reviewmentioning

confidence: 95%

Proposed Method for Efficient Block Cipher Cryptography

Alregabo

Ismail

2023

Eximia

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“…Through this method, the user can use a simple passphrase to remember without passing a complex one to increase the security level, because in any case, a rotation of the generated hash will provide an additional layer of security [31,32].…”

Section: Explanation Of Rotation Methodsmentioning

confidence: 99%

H-Rotation: Secure Storage and Retrieval of Passphrases on the Authentication Process

Touil¹,

Akkad²,

Satori³

2020

IJSSE

Self Cite

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Passwords/passphrases can be either system generated or user-selected. A combination of both approaches is also possible—encryption created by the system and assigned to the user by the information system meeting the policy requirements. Policy rules can be designed to increase security and usability factors, such as information storage and retrieval. This paper proposes an algorithm dedicated to the security of passphrases in an online authentication, so the passphrase entered will be stored in a remote database. Through an SHA-3 hash function, the system must hash the pass phase. Before storage, the system must apply random rotations on the already generated HASH while eliminating any traceability performed on the different transactions performed. To prevent the hacker from using them recurrently if he wants to attack our database. Then the system must recover the real HASH and then the passphrase based on the data provided by the user in the form of codes.

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“…The defects of this cipher are that it is easy to detect the size of the key to start a statistical attack and two same letters are located at the same place at different blocks which makes the cipher weak. So, by combining these two algorithms an unfailing hybrid algorithm will be obtained, which will help in resisting the attacks including statistical attacks [18].…”

Section: Technique -3mentioning

confidence: 99%

A Review on Challenges and Latest Trends on Cyber Security Using Text Cryptography

Anjali¹,

Kshiteesh²,

Koundinya³

et al. 2021

Atlantis Highlights in Computer Sciences

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In the IT sector, an important role is played by Cyber Security. Securing information has become one of the biggest challenges even today. The cybercrimes are growing enormously bit by bit and many measures are taken to prevent cyber-crimes. Despite these dealings, cybersecurity is still a tremendous apprehension to many. So, this paper emphasizes encounters met by cybersecurity and the modern cyber security performances using text cryptography. The secured way of transmission of data over the network from security attacks is using cryptography. This paper explores different cryptographic approaches to improve data security and performance evaluation metrics. The notable ones among them like Playfair, BCD encoded key management and Blowfish operate on discrete techniques of their own. Unlike the conventional encryption schemes which focus on improving algorithms for the text message, the BCD method aims at enriching the algorithm for key generation. The Blowfish functions on subkey generation and permutation for data encryption.

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Text Encryption: Hybrid cryptographic method using Vigenere and Hill Ciphers

Cited by 30 publications

References 22 publications

Proposed Method for Efficient Block Cipher Cryptography

Proposed Method for Efficient Block Cipher Cryptography

H-Rotation: Secure Storage and Retrieval of Passphrases on the Authentication Process

A Review on Challenges and Latest Trends on Cyber Security Using Text Cryptography

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