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Publication Date

Thu Aug 30 2018

Journal Name

Iraqi Journal Of Science

Volume

59

Issue Number

3B

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Construct a New System as a Combining Function for the LFSR in the Stream Cipher Systems Using Multiplicative Cyclic Group

Cryptography

LFSR

Stream Cipher

Multiplicative Cyclic Group

Mithaq Abdulkareem

Ayad G. Naser

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In this paper, we construct a new mathematical system as Multiplicative Cyclic Group (MCG), called a New Digital Algebraic Generator (NDAG) Unit, which would generate digital sequences with good statistical properties. This new Unit can be considered as a new basic unit of stream ciphers.

A (NDAG) system can be constructed from collection of (NDAG) units using a Boolean function as a combining function of the system. This system could be used in cryptography as like as Linear Feedback Shift Register (LFSR) unit. This unit is basic component of a stream cipher system.

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Publication Date

Sat Oct 01 2022

Journal Name

Baghdad Science Journal

Designing and Synthesising Novel Benzophenone Biscyclic Imides Comprising Drug Moity with Investigating their Antimicrobial Activity

Bis (N-drug phthalamic acid-4-yl) ketone

Bis (N-drug phthalimidyl-4-yl) ketone

Cyclic imide

Zaynab Hussein

Ahlam Marouf

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The present work involved designing and synthesizing of a series of new. compounds which their molecules are composed from two biologically active components namely sulfamethoxazole or β-lactam containing drugs and cyclic imides. The target new compounds were synthesized by two steps in the first one a series of six bis (N-drug phthalamic acid_4-yl) ketone (1-6) were prepared from the reaction of sulfamethoxazole or β-lactam containing drugs with benzophenone 3, 3′, 4, 4′ -tetracarboxylic dianhydride.

In the second step, compounds (1-6) were introduced in dehydration reaction via fusion process producing the target compounds bis (N-drug phthalimidyl-4-yl) ketone (7-12). The antibacterial and antifungal high

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Publication Date

Tue Feb 01 2022

Journal Name

Iraqi Journal Of Science

P, P-L. Compact Topological Ring

rings

compact topological ring

topological ring

D-cover groups

isomorpnism

direct product

D-compact group

Mohammed A.

Afraa R.

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In this paper, we introduced some new definitions on P-compact topological ring and PL-compact topological ring for the compactification in topological space and rings, we obtain some results related to P-compact and P-L compact topological ring.

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Publication Date

Thu Dec 01 2022

Journal Name

Indonesian Journal Of Electrical Engineering And Computer Science

Cryptography based on retina information

Cryptography

Diagonal center-end key

Diagonal-radius center-end key

Radius center-end key

Retina feature extraction

Retina information

Zainab

Tarik

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The security of message information has drawn more attention nowadays, so; cryptography has been used extensively. This research aims to generate secured cipher keys from retina information to increase the level of security. The proposed technique utilizes cryptography based on retina information. The main contribution is the original procedure used to generate three types of keys in one system from the retina vessel's end position and improve the technique of three systems, each with one key. The distances between the center of the diagonals of the retina image and the retina vessel's end (diagonal center-end (DCE)) represent the first key. The distances between the center of the radius of the retina and the retina vessel's end (ra

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