Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : RSA


Public Key Cipher with Signature Based on Diffie-Hellman and the Magic Square Problem

Abdul Monem S.Rahma; Abdul Mohssen J.Abdul Hossen; OmarA.Dawood

Engineering and Technology Journal, 2016, Volume 34, Issue 1, Pages 1-15

In the present paper, wedeveloped a new variant of asymmetric cipher (Public Key) algorithm based on the Discrete Logarithm Problem (DLP) uses Diffie-Hellman key exchange protocol and the mathematical features of magic square. The proposed method exploits the DLP problem in the key exchange by using the final value of Diffie-Hellman key agreement, just as the dimension to the magic construction and through which determines the type of magic square construction if it is (odd, singly-even or doubly-even) magic square as well as through which determines starting number and the difference value. From the other point, it exploits the magic squares problem in encryption/decryption and signing/verifyingoperations. The developed methodextremely speed in the Encryption/Decryption process as well as in the digital signaturethat uses aSecure Hash Algorithm SHA-1, since the proposed cipher does not use logarithm and the factorization as the traditional algorithms in ciphering and deciphering operations just in the mutual exchanging, but it depends mainly upon the magic constant and magic sum as alternate that deduced from the result of multiplied fixed value, which selected randomly and imposesto keep secret, as we shall explained in the next sections.

Email Using Microsoft Message Queue and RSA Encryption Technique

Taif Sami Hassan

Engineering and Technology Journal, 2012, Volume 30, Issue 14, Pages 2467-2479

The information exchange through the internet and especially the electronic email is
one of the most recent used areas. The paper presents simple system for efficient email
handling. The system depends mainly on the Microsoft Message Queue MSMQ
technique, introduced by Microsoft Corporation. The system is well protected using many
tools offered by MSMQ Environment and the RSA encryption method. The system
characterized by its simplicity, fastness, and has the ability to install and implement using
simple steps in Local Area Network (LAN) without internet and also with the internet.

Proposed Hybrid-Encryption System for Multicast Network

Mohammad Natiq Fadhil Ibraheem

Engineering and Technology Journal, 2010, Volume 28, Issue 24, Pages 7027-7036

In this paper the proposed method based on two encrypted algorithms (Public key, and Block cipher) at the same time, it allowed a sender to encrypt the multicast packet and forward it into the packet network on the optimal distribution tree. The packet may be replicated at the optimal locations in the network and delivered to all the receivers. The receivers are capable of decrypting the packet and forwarding the
packet in the secure network environment. The sender must encrypt packets using a shared key that all the legitimate receivers use to decrypt thepackets. The security of the system is based on the ability to control the distribution of the keys only to those legitimate receivers.