Classical Cryptography for Kurdish Language

2014

Cryptography is the practice and study of Encrypting/Decrypting information. In modern times cryptography is considered a branch of both mathematics and computer science and is affiliated closely with information theory, computer security and engineering. Cryptography is used in applications present in technologically advanced societies; examples include the security of ATM cards, computer passwords and electronic commerce, which all depend on cryptography. The algorithms and methods used to encrypt messages in Arabic language are few and old; there are no modern encryption algorithms to encrypt the Arabic letters. This research paper proposed the mixed encryption algorithm based on simple multiplication and logarithm function with Caesar cipher to solve the problem. Our method is easy to adopt the coding of advanced language and is safe enough. The security mechanism uses some algorithms to scramble data into unreadable text which can be only being decoded or decrypted by party tho...

Journal of Software Engineering & Intelligent Systems, 2018

In this paper, a novel algorithm of text encryption is presented for applications of cryptography and information security. Most historical and well-known methods of text encryption can be deciphered through the statistical analysis of the symbols' appearance frequencies in text, whenever they follow a normal pattern. The presented herein algorithm is based on a mixed frequency pattern that has been inspired by the Aegean Scripts, developed mainly in Crete more than 40 centuries ago, and by the Natural Language Processing applications for their reading or decipherment. These scripts are classified as syllabaries, because their writing symbols render syllabic phonetic values, consisting mainly of one consonant followed by one vowel. The herein cryptographic algorithm, implemented in Python programming language, performs a partial syllabic substitution (PaSyS) of the text's characters, thus being more resistant to normal statistical decipherment.

International Journal of Security and Its Applications, 2017

This paper proposes a novel hybrid encryption algorithm that utilizes the natural language phonetics significantly. The encryption process is based on two major aspects. The first is the phonetic difference between languages and their mapping into Human Machine interface tools such as the computer keyboard. The second aspect is the embedded ciphering process as a mean of private key exchange (PKE). Such a key will be used to determine all the ciphering parameters. The presented encryption protocol is an end-to-end process and the choices of languages and machine interface is completely user dependant. The creation of ciphering parameters such as the indicator, the key, the array and the operation are also user defined. This work explores several examples for each choice using the Arabic language as a model for the phonetic intermediate language. The keyboard character mapping is used based on the location of characters in the multilingual keyboard. Both fixed location mapping and variable location shifting are introduced.

International Journal of Security and Its Applications, 2017

The best way of exchanging the information is communication, due to this security of communication system become more challenging and typical day by day. Cryptography plays a major role in giving the data security which is transmitted over the internet work. The process of transforming the plain text is called encryption. Plain text is supposed to be the input of every encryption process and the corresponding cipher text is the output, whereas in the process of decryption the situation is opposite. As the process of decryption is converting cipher text in to plane text. This study presents the algorithms based on ASCII values of characteristics in the plane text for the encryption and decryption process. Since this effort has already been done by many researchers, but here we are trying to enhance the security by modifying the previously used string keys for the data encryption and decryption. The algorithm is presented for the symmetric cryptosystem in which same key will be used for the encryption and corresponding decryption process.

Indian journal of science and technology, 2023

Objectives: To propose a new novel and unique cryptosystem with interfaces for the designed cryptosystem and to implement and test the new designed methodologies. Methods: The Tamil Unicode is used to convert the Plain text (Sender's message) to Intelligent Key Cryptography system (IKC) Intermediary code. This intermediary code is converted to IKC cipher text by transpositioning characters with integer digit values of Time in positive direction. IKC decryption of cipher text (received message) to Intermediary code is done using Tamil Unicode and then this is converted to plain text by trans-positioning characters with integer digit values of Time in negative direction. The IKC algorithm developed thus address the discrepancies for the existing algorithms based on the literary survey done. Findings: In the proposed IKC algorithm, the key and key space are generated dynamically from the system Time and the system font Tamil Unicode; thus, reducing the key maintenance problems of the existing algorithms. In current cryptography algorithms, work is based on the assumption that the key value never comes to zero. But all the algorithms are mathematical calculations which will return to zero at an infinite point. This drawback is overcome in IKC algorithm by taking the Time the real infinity. The value of the time once passed will never return. The entire algorithm works in a secure shell developed using C++ and has proved to satisfy the needs of the objective of a robust cryptosystem. Comparative analysis shows that IKC works better compared to the existing system. Novelty: The IKC algorithm displays as: (i) keys are generated dynamically, (ii) cipher once formed is never repeated, even if the same plaintext is enciphered again, and (iii) it satisfies NIST policies.

International Journal of Advanced Computer Science and Applications, 2018

The researcher introduced an enhanced classical Arabic-based encryption technique that is essentially designed for Arab nations. The new algorithm uses the shared key technique where the Keyword system Modulus is employed to add randomness and confusion to the table of alphabets being used. The results proved that the technique is resistant to brute force and cryptanalysis attacks. The time needed to break the algorithm is huge and the possibilities of decrypting the cipher text using the language frequency and language characteristics are hard and unfeasible. The technique assumes the existence of a secure channel for the keyword exchange.

Webology, 2021

Most encryption techniques are deals with English language, but that deals with Arabic language are few. Therefore, many researchers interests with encryption ciphers that applied on text which wrote in Arabic language. This reason is behind this paper. In this paper, there are three cipher methods implemented together on Arabic text. Using more than one cipher method is increase the security of algorithm used. Each letter of plaintext is encrypted by a specified cipher method. Selection process of one of three cipher methods used in this work is done by controlling process that selects one cipher method to encrypt one letter of plaintext. The cipher methods that used in this paper are RSA, Playfair and Vignere. Each one of them has different basis mathematical model. This proposed encryption Arabic text method gives results better than previous related papers.

DIYALA JOURNAL OF ENGINEERING SCIENCES, 2017

Most organizations today use two levels of security: Data security level (encryption) and Network security level (firewall) etc. Therefore, encryption plays a vital role in securing daily operations of organizations. Securing data at first level aims to hide data characteristics. So, different algorithms and methods are being researched and developed to cover this gap for securing different data types especially text messages and make it very difficult for unauthorized parties to break it. From these, the major no. of algorithms are specialized to encrypt English texts, but no one for Arabic language texts although there were many attempts to invent such algorithms. As a result, this research proposed a new encryption method to encrypt Arabic text by using the principle of integration to provide better security and increasing the complexity of guessing the correct keys and correct plain text. At the end, the results show that the new cryptosystem is inevitable to cryptanalysis attack.

Journal of Natural Sciences and Mathematics Research

This research is an application of Hill Cipher cryptographic techniques in the process of encoding messages in the form of Arabic text. Hill Cipher is a classic cryptographic algorithm that uses modulo matrix and arithmetic in its application. The Arabic text used in the Hill Cipher cryptographic technique includes hijaiyyah letters ا, ب, , ي, أ, إ, ؤ, ئ, ى, ة, space , ., ،, ؟, !, and Arabic numbers 0, 1, 9, so the modulo used is . This study discusses the steps in encrypting messages with examples of their application in securing Arabic text documents.