TY - JOUR ID - TI - A Comparative Study of Researches Based on Magic Square in Encryption with Proposing a New Technology AU - Ibrahim Malik ALattar AU - Abdul Monem S. Rahma PY - 2021 VL - 21 IS - 2 SP - 102 EP - 114 JO - IRAQI JOURNAL OF COMPUTERS, COMMUNICATIONS, CONTROL AND SYSTEMS ENGINEERING المجلة العراقية لهندسة الحاسبات والاتصالات والسيطرة والنظم SN - 18119212 AB - This paper aims to develop a new cryptographic algorithm that isbased on the magic square method of order five with multi message lengths tobe more complex in order to increase the complexity; in addition to comparingthe cipher with the use of the magic square of order five, four and three (allsingle message length. The proposed work has been done by using two extrarounds and depending on round statuse ( even or odd) , messages are detectedto be used. The key is placed in agreed positions, then the remaining positionsare filled with the message, and then certain sums are calculated to representthe encrypted text. Speed, complexity, histogram calculations for images, andNIST calculations for texts were calculated, and the results were compared,where the complexity of the algorithms was as follows ((P)15 × (256)10)2 × (P)11× (256)14 and ((256)15 × (256)10)2 × (256)11 × (256)14 for GF(P) and GF(28)respectively , From that, it has been discovered that the proposed algorithm(Magic Square of order five with multi message length) is better than the rest ofthe algorithms as it has excellent complexity and a slight difference in thespeed.

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