Design of Improved Stream Cipher Algorithms for GSM Communication

Global System for Mobile communication (GSM) is standard set developed by the European Telecommunications Standards Institute to describe technologies for second generation digital cellular networks. GSM was created with a moderate level of service security. Communications between the subscriber and...

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Main Author:	Nur Hafiza Zakaria
Format:	Thesis
Language:	English
Subjects:	Global system for mobile communications Stream ciphers
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id	my-usim-ddms-12316
record_format	uketd_dc
spelling	my-usim-ddms-123162024-05-29T04:01:24Z Design of Improved Stream Cipher Algorithms for GSM Communication Nur Hafiza Zakaria Global System for Mobile communication (GSM) is standard set developed by the European Telecommunications Standards Institute to describe technologies for second generation digital cellular networks. GSM was created with a moderate level of service security. Communications between the subscriber and the base station can be encrypted. GSM uses several cryptographic algorithms for information security. The A5/1 and A5/2 stream ciphers are used for ensuring over the air privacy. However, in this research it will focus only on A5/1 stream cipher algorithm. A5/1 was developed earlier than A5/2 and it is a stronger algorithm used within Europe and United States. However, serious weaknesses have been found in A5 algorithms. A5/1 is based around a combination of three linear feedback shift registers. There is a set of statistical tests to determine the security level that can be provided by various algorithms. The perfect system is the one that gives the best statistical results. Simulation on six proposed models was performed on PC using Java language. The generated key of the algorithms were analyzed to see whether the generated key is random or not. Verification of algorithms are analyzed using five statistical tests which are frequency test, runs test, serial test, longest runs of one test and linear complexity test. Data analysis of the simulation was done using NIST statistical test suite. Based on all the tests and analysis, the algorithms designed had fulfilled the characteristics for a good stream cipher algorithm. Universiti Sains Islam Malaysia 2012 Thesis en https://oarep.usim.edu.my/handle/123456789/12316 https://oarep.usim.edu.my/bitstreams/5a58e798-1301-45ea-aa3e-21095360ef3a/download 8a4605be74aa9ea9d79846c1fba20a33 Global system for mobile communications Stream ciphers
institution	Universiti Sains Islam Malaysia
collection	USIM Institutional Repository
language	English
topic	Global system for mobile communications Stream ciphers
spellingShingle	Global system for mobile communications Stream ciphers Nur Hafiza Zakaria Design of Improved Stream Cipher Algorithms for GSM Communication
description	Global System for Mobile communication (GSM) is standard set developed by the European Telecommunications Standards Institute to describe technologies for second generation digital cellular networks. GSM was created with a moderate level of service security. Communications between the subscriber and the base station can be encrypted. GSM uses several cryptographic algorithms for information security. The A5/1 and A5/2 stream ciphers are used for ensuring over the air privacy. However, in this research it will focus only on A5/1 stream cipher algorithm. A5/1 was developed earlier than A5/2 and it is a stronger algorithm used within Europe and United States. However, serious weaknesses have been found in A5 algorithms. A5/1 is based around a combination of three linear feedback shift registers. There is a set of statistical tests to determine the security level that can be provided by various algorithms. The perfect system is the one that gives the best statistical results. Simulation on six proposed models was performed on PC using Java language. The generated key of the algorithms were analyzed to see whether the generated key is random or not. Verification of algorithms are analyzed using five statistical tests which are frequency test, runs test, serial test, longest runs of one test and linear complexity test. Data analysis of the simulation was done using NIST statistical test suite. Based on all the tests and analysis, the algorithms designed had fulfilled the characteristics for a good stream cipher algorithm.
format	Thesis
author	Nur Hafiza Zakaria
author_facet	Nur Hafiza Zakaria
author_sort	Nur Hafiza Zakaria
title	Design of Improved Stream Cipher Algorithms for GSM Communication
title_short	Design of Improved Stream Cipher Algorithms for GSM Communication
title_full	Design of Improved Stream Cipher Algorithms for GSM Communication
title_fullStr	Design of Improved Stream Cipher Algorithms for GSM Communication
title_full_unstemmed	Design of Improved Stream Cipher Algorithms for GSM Communication
title_sort	design of improved stream cipher algorithms for gsm communication
granting_institution	Universiti Sains Islam Malaysia
_version_	1812444862317854720

Design of Improved Stream Cipher Algorithms for GSM Communication

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