This paper presents a quasigroup encryptor that has very good data-scrambling properties and, therefore, it has potential uses in symmetric cryptography. The purpose of the scrambler is to maximize the entropy at the output, even in cases where the input is constant. The great complexity associated with the task of finding the scrambling transformation ensures the effectiveness of the encryptio...

Image scrambling is an important technique in digital image encryption and digital image watermarking. This paper's main purpose is to research how to scramble image by space-bit-plane operation (SBPO). Based on analyzing traditional bit operation of individual pixels image scrambling method, this paper proposed a new scrambling algorithm. The new scrambling algorithm combined with SBPO and cha...

Roksolana Mykhaylyk We, the dissertation committee for the above candidate for the Doctor of Philosophy degree, hereby recommend acceptance of this dissertation. Abstract of the Dissertation 2010 This dissertation investigates direct object scrambling in Ukrainian. Examination of various syntactic structures has demonstrated that Ukrainian speakers observe semantic/pragmatic constraints on scra...

purpose: this study aimed to identify and introduce the most important evaluation and production criteria of audio books based on users’ point of view.method: in terms of methodology, this study was among the quantitative studies and done with descriptive survey. the research instrument was researcher-made questionnaire. population was all users of audiolib website that used from audio books mo...

To prevent the leakage of image content, encryption technology has received increasing attention. Most current algorithms are only suitable for images certain types and cannot update keys in a timely manner. tackle such problems, we propose an adaptive chaotic algorithm based on RNA pixel depth. Firstly, novel system, two-dimensional improved Logistic-adjusted-Sine map is designed. Then, three-...

Ž . For a ring R with identity, define Unip R to be the group of upper-triangular n matrices over R all of whose diagonal entries are 1. For i 1, 2, . . . , n 1, let Si denote the matrix whose only nonzero off-diagonal entry is a 1 in the ith row and Ž . Ž . i 1 st column. Then for any integer m including m 0 , it is easy to see that Ž . the S generate Unip Z mZ . Reiner gave relations among th...