Seminar

Ain Shams University Ain Shams University Faculty of Computer and Information Science Faculty of Computer and Information Science

Virtual SIM CardVirtual SIM Card

Team WorkTeam Work

Ahmed Mohamed Elshal CSYS

Ahmed Hassan Mohamed CSYS

Eman Ezzat Shedid CSYS

Heba Allah Mouhamed Saieed IS

Shaymaa Saied Mohammed IS

Supervisors:

PROF.Dr. Mohamed Hashem Dr. Khaled Elbhansy T.A. Mahmoud Fayez

AgendaAgenda

• Problem Definition• Objectives• Scientific Background• System Analysis

use case diagram. System Sequence diagram

• System Design Class Diagram Sequence Diagram System Architecture

• Development Tools and Platforms • Implementation phases• Steps to use Virtual SIM Card

Reality GSM Simulation

• Demo • References

Problem DefinitionProblem Definition

MOBILE USERS WANTS TO USE MORE THAN ONE SIM CARD

Problem DefinitionProblem Definition

The mobile users try achieving their goal by:

Two options

Use one mobile with multiple SIM

card

Use more than one Mobile device.

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Expensive

Not suitable

Use more than one mobile device

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Use one mobile with multiple

SIM card

At Most Three SIM Card

Higher quality ,higher cost

Lower quality ,lower cost

AgendaAgenda







ObjectivesObjectives

Regular mobile phone support multi SIM card

Lead to

Virtual SIM CardConcept Virtual SIM Card One Regular Mobile

AgendaAgenda• Problem Definition• Objectives• Scientific Background• System Analysis






Scientific BackgroundScientific Background

What Is the SIM Card?

The SIM, Subscriber Identity Module, is a smart microprocessor chip for mobile phones used in all GSM and 3G networks as well as other digital telephone networks

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Why using SIM cards in GSM networks?

• It Identifies the Subscriber. Subscriber information, such as the IMSI (International Mobile Subscriber Identity), is stored in the SIM• Access and Security: Originally designed to allow access to mobile phone networks, it authenticates the subscriber and holds the GSM network authentication Keys and Algorithms.• SIM card can be used to store user-defined information such as phonebook entries SMS, and Subscriber related information

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SIM Card Architecture

– 8 bit CPU– 16 K ROM– 256 bytes

RAM– 4K EEPROM

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SIM Card Memory Structure

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SIM Card Tasks

authentication algorithm (A3).cipher key generation algorithm (A8).Encryption and Decryption.Data storage.

AgendaAgenda







System Analysis and DesignSystem Analysis and Design

• RUP Methodology

• Three tires

System Analysis:System Analysis:

• Use Case Diagram

System Sequence Diagram:

System SequenceDiagram:

Make call

Cont…Cont…

Send Message

Class Diagram:Class Diagram:

Sequence Diagram:Sequence Diagram:

System ArchitectureSystem Architecture

Virtual

SIM

Card

Software Driver:

That simulate SIM card

Functionality

Microcontroller:

That interact with the

mobile phone

Text

Text

AgendaAgenda







Development Tools andPlatforms

Development Tools and Platforms

Hardware ToolsSoftware Tools

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Hardware Tools

LS6410 SAMSUNG ARM11 S3C6410 board kit 4.3 TFT LCD (Android).

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Hardware Tools

GSM/GPRS Module SIM300

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Hardware Tools

PIC (16FF877A) Microcontroller

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Software Tools

Eclipse IDE for JAVA Developer

MICROC for PIC Developer

Android SDK






• Demo• References

Implementation phasesImplementation phases

Implement software driver -that simulate SIM card functionality :•Authentication •Key generation•Encryption and Decryption•Data storage-That software allow using queue of SIM cards

Implement SIM Card Driver

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Retrieve SIM Card Information.

Android Application

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SIM card Reader

Construct SIM card reader that read the SIM memory to use this data to test the virtual SIM card that consist of serial SIM reader and application

AgendaAgenda







Steps to use Virtual SIM CardSteps to use Virtual SIM Card

• Service provider side: To use system in reality there will be an intermediate company or website that will take the SIM card information by the SIM card reader (implemented) or by the java application (Implemented), the company will be responsible about subscriber authentication key(Ki), the system is available for unlimited number of SIMs.• User side: very simple such as traditional way (buy the PIC controller as a virtual SIM card)

Reality

For EducationFor Education

•We make GSM simulator to simulate what happen in reality by Applying GSM -SIM Card protocols , the only difference between Simulation and Reality is that we cannot have the Subscriber Authentication Key(Ki) as it is illegal to obtain it because its top secret and if it known it will make high danger on the owner of the SIM chip.

GSM Simulator







DemoDemo

• SIMULATION.EXE

• MOBILE STATION SIMULATION







ReferencesReferences

Books :

Book title Author DescriptionMobile

ComputingRaj kamal. Illustrate GSM

protocols and GSM architecture.

Android Programmer's

J.F.DiMarzio. HOW to make android application.

Professional android

Application Development

Reto Meier Creating application for the android mobile phone

platform.


Papers:

Paper title Author DateChallenges of

MobileComputing

Professor Randy H. Katz

1996

Mobile Computing

R. K. Ghosh April, 2005

SIM cards Yousef Rashidy(Vodaf

one Egypt, Technology,

PSD)

2005

SIM Card Security

Prof. Dr.-Ing. Christof Paar

12.07.2007


Web Resources:

http://developer.android.com/reference/android/telephony/gsm/package-summery.html

http://en.wikipedia.org/wiki/Subscriber_Identity_Module

http://www.experts-exchange.com/Networking/Wireless/Standards/GSM/Q_20449376.html

http://www.slideshare.net/c.enrique.ortiz/sim-card-overview

https://www.emt.ee/en/teenused/lisateenused/mobiil_id/sim_kaart

http://www.netmite.com/android/mydroid/development/pdk/docs/telephony.html















Questions? Questions?

?

Seminar

Education

system sequence diagram

class diagram

system design

virtual sim card reality

mohamed hashem

mahmoud fayez

team worksupervisors

gsm simulation