GSM (group special mobile or general system for mobile communication) is the standard for digital cellular communications. The group special mobile was established in 1982. GSM provides enhanced features over older analog-based systems, which are below:
Feature: The subscriber has the advantage of a system allowing user to communicate from everywhere and to be called in any area served by a GSM cellular network using the same assigned telephone number, even outside his home location. The calling party does not need to be informed about the called person's location because the GSM networks are responsible for the location tasks. With user personal chip-card, the user can use a telephone in a car and also outside. This mobility feature is preferred by many business people who constantly need to be in touch with their headquarters.
Threat: The security methods standardized for the GSM System make it the most secure cellular telecommunications standard currently available. Although the confidentiality of a call and the GSM subscriber is only guaranteed on the radio channel, this is a major step in reaching end-to- end security. The subscriber’s privacy is ensured through the use of temporary identification numbers. The confidentiality of the communication itself on the radio link is performed by the application of encryption algorithms and frequency hopping which could only be realized using digital systems and signaling.
Solution: The limitation of security in cellular communication is a result of the fact that all cellular communication is sent over the air, which then gives rise to threats from eavesdroppers with suitable receivers. Keeping this in account, security controls were integrated into GSM to make the system as secure as public switched telephone networks. The security functions are:
1. 1.Anonymity
2. 2.Authentication
3. 3.User Data and Signalling Protection
No comments:
Post a Comment