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Enhancement of encryption techniques using elliptic curve cryptography

Doctor of Philosophy in Computer Engineering

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Bibliographic Details
Main Author: Ziad Ershaid Ahmad, Dawahdeh
Other Authors: Shahrul Nizam, Yaakob, Assoc. Prof. Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2017
Subjects:
Curves, Elliptic
Data encryption (Computer science)
Cryptography
Encryption
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72769
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spelling my.unimap-727692022-12-02T06:09:58Z Enhancement of encryption techniques using elliptic curve cryptography Ziad Ershaid Ahmad, Dawahdeh Shahrul Nizam, Yaakob, Assoc. Prof. Dr. Curves, Elliptic Data encryption (Computer science) Cryptography Encryption Doctor of Philosophy in Computer Engineering Encryption and decryption processes consume more time for mathematical calculations. The main goal of this research work is to improve ElGamal, Menezes-Vanstone, and Hill Cipher encryption techniques by using Elliptic Curve Cryptography to speed up the calculations in MEGECC and MMVECC, and increase the security level and key efficiency in ECCHC. In the modified MEGECC, using hexadecimal ASCII code instead of decimal ASCII code reduced the number of doubling and adding operations in the scalar multiplications and sped up the mathematical computations. Only addition and subtraction operations are used in the proposed MMVECC, and no inversion or multiplication operations are used because it consumes a longer time compared to addition and subtraction, besides using hexadecimal ASCII code to speed up calculations. The third modification in this research work is applied on the original Hill Cipher algorithm, it has a simple structure and fast computations, but weak security. A new hybrid encryption approach between Elliptic Curve Cryptosystem and original Hill Cipher has been proposed to convert Hill Cipher from symmetric technique to asymmetric one and increase its security effectiveness. Self-invertible key matrix is used to generate encryption and decryption secret key. The ability to encrypt every character in the 128 ASCII table by using its decimal ASCII value directly without a mapping table is another contribution in ECCHC approach. All the three modifications in this thesis are applied on text messages of different sizes and different grayscale images of size 256256. For text messages, the number of addition and doubling operations and also the encryption/decryption time needed in the proposed techniques are calculated and compared with other techniques. 2017 2021-11-10T03:47:26Z 2021-11-10T03:47:26Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72769 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Computer and Communication Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Curves, Elliptic
Data encryption (Computer science)
Cryptography
Encryption
spellingShingle Curves, Elliptic
Data encryption (Computer science)
Cryptography
Encryption
Ziad Ershaid Ahmad, Dawahdeh
Enhancement of encryption techniques using elliptic curve cryptography
description Doctor of Philosophy in Computer Engineering
author2 Shahrul Nizam, Yaakob, Assoc. Prof. Dr.
author_facet Shahrul Nizam, Yaakob, Assoc. Prof. Dr.
Ziad Ershaid Ahmad, Dawahdeh
format Thesis
author Ziad Ershaid Ahmad, Dawahdeh
author_sort Ziad Ershaid Ahmad, Dawahdeh
title Enhancement of encryption techniques using elliptic curve cryptography
title_short Enhancement of encryption techniques using elliptic curve cryptography
title_full Enhancement of encryption techniques using elliptic curve cryptography
title_fullStr Enhancement of encryption techniques using elliptic curve cryptography
title_full_unstemmed Enhancement of encryption techniques using elliptic curve cryptography
title_sort enhancement of encryption techniques using elliptic curve cryptography
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2017
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72769
_version_ 1753972983107420160
score 13.214268

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