Image Data System
Student name:
Student ID:
Session:
Supervisor name:
2011/2012
Project ID:
1
Acknowledgement
We would like to show our greatest appreciation to our supervisor.
We can't say thank you enough for her tremendous support and help.
We feel motivated and encouraged every time we attend her meeting.
Without her encouragement and guidance this project would not
have materialized.
The guidance and support received from all the members who
contributed and who are contributing to this project, was vital for the
success of the project. I am grateful for their constant support and
help.
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Table of Contents
Acknowledgement ..................................................................................................... 2
Table of Contents ........................................................................................................ 3
List of Figures............................................................................................................... 4
Summary: ....................................................................................................................... 5
Chapter one (Introduction).................................................................................. 10
Project Aims:........................................................................................................... 10
Project Features: ................................................................................................... 11
The project description: .................................................................................... 12
The software tools: .............................................................................................. 14
Literature Review: ............................................................................................... 15
Classifying methods used to steal data: ........................................................ 15
Some secured ways of sharing or sending larger files: ....................... 17
What is data encryption?.................................................................................... 19
Types of Data Encryption: .................................................................................. 19
Conclusion: ............................................................................................................... 20
Similar software: ...................................... Error! Bookmark not defined.
Other way for hiding data in image: . Error! Bookmark not defined.
The list of references: .............................. Error! Bookmark not defined.
Chapter Two(The plan) ............................ Error! Bookmark not defined.
Chapter Three(The analysis).................. Error! Bookmark not defined.
Chapter Four (The design) ...................... Error! Bookmark not defined.
Chapter Five (The test) ............................. Error! Bookmark not defined.
Chapter Six (Closure) ................................. Error! Bookmark not defined.
First the conclusion: ............................... Error! Bookmark not defined.
Second the recommendations: .......... Error! Bookmark not defined.
Third the future work:........................... Error! Bookmark not defined.
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List of Figures
No table of figures entries found.
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Summary:
We have divided our report in to six chapters and each chapter will
contain subsections as follows:
Chapter one
In this chapter we will introduce our project and it includes several
subsections as follows:
The project aims:
Here we will show the aims of our project and why we create this
project.
The project features:
In this subsection we will display all the features of the project.
The project description:
In this subsection we will explain the idea of the project.
The software tools:
Here we will mention all the tools that we have used in the design,
documentation and the development tools.
Literature review:
In this subsection we will clarify the methods of stealing the data to
warn the user from it then we will showing the ways of sharing or
sending larger files after that will clear what is data encryption and
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the types of data encryption. There will be
also similar software and its features and we will display the other
ways of hiding data in image and the list of references that we have
used.
Chapter Two
The Plan
In this chapter we will talk about schedule plan that we followed
from the first step for delivering the project and final report and it
will illustrate with Microsoft project.
Chapter Three
The analysis
This chapter will contain the system analysis such as:
The data flow diagram: A DFD shows what kinds of data will be input
to and output from the system, where the data will come from and go
to, and where the data will be stored.
Use case diagram: This diagram will show the users of the system
and the functions of each user.
Sequence diagram: This diagram will show the sequence of
performing a specific job. It will show the start, the following steps
and the way it will end. Also it shows the classes between the
different nodes of the system and their functions.
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Class diagram: It describes the classes that make up a system and the
static relationships between them. Classes are defined in terms of
their name, attributes (or data), and behaviors (or methods). The
static relationships are association, aggregation, and inheritance.
Activity diagram: It describes the business and operational step-bystep workflows of components in a system. An activity diagram
shows the overall flow of control.
ER diagram: is a data modeling technique that creates a graphical
representation of the entities, and the relationships between entities,
within an information system. We will show the entities of each table,
the relation among tables, the primary and foreign key and the data
type.
The flow chart diagram: It is a graphical or symbolic representation
of a process. Each step in the process is represented by a different
symbol and contains a short description of the process step. The flow
chart symbols are linked together with arrows showing the process
flow direction.
The collaboration diagram: It illustrates the relationships and
interactions among software objects in the Unified Modeling
Language (UML).
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The design
Chapter Four
The design
In this chapter we will talk about web forms and we will provide
every one with a little bit of illustration, by the way we will mention
how we designed these web forms and what we used to design it. We
will talk also about reports with a little bit of information and we will
talk about the software tools with its advantages and the
programming languages that we have chosen and the reasons for
choosing it.
Chapter Five
The test plan
In this chapter we will mention what is our plan to test our system
and what was the output from these tests.
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Chapter six
We divided this chapter in to three sections:
Conclusion: In this section we will provide conclusion to our project
which summarizes the main features of the project.
Recommendations: we will mention here the weak points of our
system and what we will change if we start the system again and our
recommendations for the users and developers.
Future work: Here we will suggest possible future work to build on
what we have done.
Finally the Appendices
Here we will provide our final report with images for our works.
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Chapter one (Introduction)
Information is the primary commodity in world of E-Commerce. As
technology advances and access to markets expand, the need to
protect information to ensure its confidentiality, integrity, and
availability to those whom need it for making critical personal,
business, or government decisions becomes more important. Data
security means of ensuring that data is kept safe from corruption and
accessing it is suitably controlled. When sending confidential data
electronically, to those who are authorized, it is important to ensure
it is being transmitted securely. Email is not a secure method of
electronic delivery, therefore, we strongly recommend using IDS
(Image-Data System) which is a system that helps you to keep your
files away off the hackers and provide you with high secure level for
your data.
Project Aims:
This project aims to hide your file(s) in a normal image and you will
be the only one who knows that. The positive side is that you can
send this to other people and if someone should get hold of it there is
no problem. Because most people would never guess that there is a
file(s) hidden in the image.
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Project Features:
Data is a big target to hackers; especially Valuable data. There are
many ways to keep files from getting in to other people hands. The
safest way is to encrypt your files.
But what if a hacker could decrypt your code?!
The project idea is a way for solving the previous problems, as you
can hide your file(s) in a normal image. The positive side with this is
most people would never guess that there is a file(s) hidden in the
image. This system offers that:
 Our system allows clients to create accounts on the system.
 Only authenticated users will be allowed to login to the system.
 The user uploads the file he wants to encrypt to the system.
 The user can also select the image where the file will be hidden or
use one of the default images in the system.
 The user can send the image by e-mail with a fake body (so if a
hacker controls the recipient’s mail he won’t have a clue about the
importance of the image).
 The recipient receives SMS with how to decrypt the file.
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The project description:
The image consists of bytes so we will take off one byte from the
image and put the text in it.
Structure of text file:
Any text file consists of streams of characters, each character is 1
byte (ASCII code) each byte as all of us of course know consists of 8
bits.
The function which is used to convert the ASCII code (decimal) to the
binary equivalent called Create Bin Look up Table, which simply
creates an array as following:
Collapse | Copy Code
Bin [0] ="00000000";
Bin [1]="00000001";
..
..
bin[254]="11111110";
bin[255]="11111111"
There are many methods to convert from decimal to binary but I
found this is from the fastest methods.
Bitmap file structure:
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In general the bmp file consists in of two parts a header and the data
part.
Logic operations:
In the c/c+ + there is a bitwise operator, one of these operators is the
AND " & " , to see the AND operation look at the following table :
How to change a certain bit in a byte using MASK:
If we have 'H' '0100 1001' and we want to change the last bit to 0
simply we ANDed 'H' with the mask 254 ('1111 1110), the result will
be '0100 1000' and if the last bit is '0' and we want to change it to 1
so we first ANDed with the same mask then add 1.
Using the code
Hiding the text in the bmp file technique:
Reading the text file and converting each char. to 8 bits in array
srcbin[].
Reading the bmp file and ANDing each byte with the mask 254 '1111
1110'.
Then adding to it 1 or not depending on the srcbin[] array.
Saving the result back to the bmp file.
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Well since it is just one bit change in each byte so our eye never is
able to see such difference.
The software tools:
 Microsoft Word 2007 to create TMAs answer files.
 Microsoft Project 2010 to create schedule plan.
 Microsoft Visio 2007 to create diagrams such as Use-Case, Data
flow diagram, Entity relationship diagram.
 Microsoft .net frameworks 3.5 because it is an important
platform which we can rely on to develop our website.
 Microsoft SQL server 2008, to create our database.
 Microsoft Visual Studio 2008 to develop our web pages using
ASP.net technique.
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Literature Review:
Classifying methods used to steal data:
There are at least three different ways to steal data using a
computer. The first is when the computer user voluntarily gives
information to a malicious user, having trusted a false request for
said information. These requests usually come in the form of mass
mailings. The malicious user will have created a false website that
imitates the site of an actual bank or other financial organization.
This kind of computer crime is called phishing.
The second way to steal confidential information involves tracking
and logging a user's actions. This kind of electronic espionage is
carried out using Trojans which Kaspersky Lab classifies as TrojanSpy programs.
The third technique for stealing confidential data involves the use of
malicious programs (most often Trojans) to search for confidential
information on a user’s computer and then transmit this data to a
malicious user. In this case, a malicious user may only receive data
that the user considered important enough to enter into the
computer’s memory. However, this seeming drawback is
compensated for by the fact that the data is transmitted without user
participation.
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These malicious programs can spread in a number of ways: they can
be activated when an email attachment is opened or when a user
Clicks on a link sent via instant messaging. They can also launch
when a file is opened from a directory on a peer-to-peer network or
by using scripts on a website that take advantage of idiosyncrasies in
web browsers, making it possible for these programs to launch
automatically when users visit these sites. Such programs can also be
spread via other previously installed malicious programs that are
capable of downloading and installing them to the system.
Malicious programs like PSW Trojans are designed to access a range
of information about the system, the user and passwords to a number
of programs and operating system services. In order to do this, they
scan all storage areas which contain relevant data: Windows
protected storage, registry keys and certain program files of interest
to a malicious user (usually instant messaging clients, email systems
and Internet browsers).
After gathering data, the Trojan will usually encrypt it and compress
it into a small binary file. Later, the file may be sent via email or
placed on the malicious user's FTP server.
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Some secured ways of sharing or sending larger files:
Now a day larger files are send and shared through internet and
some other networking system. Here secured system means that you
will be able to send larger files with safely. In internet, there are
many ways of sending large files with proper safety. Sometimes
networking system is also safe to send and sharing files which are
large types. In internet, you can send files via email, webhosting, FTP
etc. in networking system you will get LAN to share files. Every
system has effective security system to maintain privacy of your files
and
data.
First, you can use email system to ensure it that your
data will get security. We know that email is a system
by which only the owner will be able to open the
mailbox and can see the content sent to him/her. It
ensures security. It is much secured for sending large
and confidential data and files to the desired person
via email. Here you will send the file to your friend and he/she will
get that file in his/her email and downloading that can read that. You
can rely much on email files sending system.
Webhosting is an internet supported file sharing and sending system.
This is secured in many ways. In case of webhosting, first you have to
open an account. There you will have a password and only you will
have accessibility on that account. You can send from there any
amount of information up to 1GB. By using this system, you will get
privileges of
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sharing your data directly on your business blog. Here your data or
files will be kept intact. Here most of the websites do not delete your
data. That is why from any computer and anywhere you will be able
to get these files. The main security is the unaltered files getting so
easily from that website.
LAN stands for local area network. From that, we can know the LAN
system. Here many computers will be kept interconnected with each
other. Here all computers will be separated by username. You will
have a password for your username. No one will be able to get your
files and data without your permission.
MPT is a larger file transfer system. Here you have to resister in the
service provider sites. Here if your friend send to you some files then
you will get a mail contains a link of internet. You can get the files by
downloading files from the mentioned link.
FTP is internet relied transfer system. Here you will be able to keep
your privacy. In this system all, the computers are connected through
internet. Here your computer will have a password and without it,
another person will not be allowed to your computer. From that, we
can say that it is safe.
You can send or share large files or data to your friends, colleges and
other persons using the above-mentioned ways.
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What is data encryption?
Data encryption refers to mathematical calculations and algorithmic
schemes that transform plaintext into cipher text, a form that is nonreadable to unauthorized parties. The recipient of an encrypted
message uses a key which triggers the algorithm mechanism to
decrypt the data, transforming it to the original plaintext version.
Before the internet, data encryption was seldom used by the public as
it was more of a military security tool. With the prevalence of online
shopping, banking and other services, even basic home users are now
aware of data encryption.
Today's web browsers automatically encrypt text when making a
connection to a secure server. This prevents intruders from listening
in on private communications. Even if they are able to capture the
message, encryption allows them to only view scrambled text or
what many call unreadable gibberish. Upon arrival, the data is
decrypted, allowing the intended recipient to view the message in its
original form.
Types of Data Encryption:
There are many different types of data encryption, but not all are
reliable. In the beginning, 64-bit encryption was thought to be strong,
but was proven wrong with the introduction of 128-bit solutions. AES
(Advanced Encryption Standard) is the new standard and permits a
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maximum of 256-bits. In general, the stronger the computer, the
better chance it has at breaking a data encryption scheme.
Data encryption schemes generally fall in two categories: symmetric
and asymmetric. AES, DES and Blowfish use symmetric key
algorithms.
Each system uses a key which is shared among the sender and the
recipient. This key has the ability to encrypt and decrypt the data.
With asymmetric encryption such as Diffie-Hellman and RSA, a pair
of keys is created and assigned: a private key and a public key. The
public key can be known by anyone and used to encrypt data that will
be sent to the owner. Once the message is encrypted, it can only be
decrypted by the owner of the private key. Asymmetric encryption is
said to be somewhat more secure than symmetric encryption as the
private key is not to be shared.
Strong encryption like SSL (Secure Sockets Layer) and TLS
(Transport Layer Security) will keep data private, but cannot always
ensure security. Websites using this type of data encryption can be
verified by checking the digital signature on their certificate, which
should be validated by an approved CA (Certificate Authority).
Conclusion:
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