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Design and Implementation of a CryptoStego Security System

Design and Implementation of a Crypto-Stego Security System

Project / Seminar Material
Reference ID: PS-5731-TM

DEDICATION

This research material titled “Design and Implementation of a Crypto-Stego Security System” is dedicated to God for his enabling grace, and to all computer enthusiasts who contributed to make life a pleasant experience during my research documentation.

ACKNOWLEDGEMENT

I extend my sincere gratitude to all those who contributed to the completion of this project. Special thanks to my Supervisor (Name of your Supervisor), the Head of Department (Name of your HOD), the Lecturers in the department of Computer Science (CS), Book Authors and Profound Scholars of existing or related project material on “Design and Implementation of a Crypto-Stego Security System” for their invaluable guidance, support, and expertise throughout the journey.

I am also grateful to your study area (mention any funding organizations, if applicable) for their financial assistance. This research would not have been possible without the encouragement and assistance of some stakeholders (mention any mentors, teachers, or colleagues). Additionally, I would like to acknowledge the understanding and patience of my family and friends during this endeavor. Your unwavering support has been a constant source of motivation. Thank you all for being part of this meaningful endeavor.

TABLE OF CONTENTS

PRELIMINARY PAGES

CHAPTER ONE

INTRODUCTION

    CHAPTER TWO

    LITERATURE REVIEW

    • 2.1 Introduction
    • ⋮

    CHAPTER THREE

    SYSTEM ANALYSIS AND DESIGN

    • 3.1 Methodology Adopted
    • 3.1.1 Problem Identification Using SSADM
    • 3.2 Analysis of the Existing System
    • 3.2.1 Dataflow of the Existing System
    • 3.2.2 Disadvantages Of The Existing System
    • 3.2.3 Weakness of the existing System
    • 3.3 Feasibility Study
    • 3.3.1 Economic Feasibility
    • 3.3.2 Technical Feasibility
    • 3.3.3 Operational Feasibility
    • 3.4 Analysis of the Proposed System
    • 3.4.1 Data Flow Diagram of the Proposed System
    • 3.4.2 Advantages of the Proposed System
    • 3.4.3 Justification of the Proposed System
    • 3.5 Functional Requirements
    • 3.5.1 Use Case Diagram Of The Admin / User Privileges
    • 3.6 Data Requirements
    • 3.7 High Level Model of the Proposed System

    CHAPTER FOUR

    SYSTEM DESIGN AND IMPLEMENTATION

    • 4.1 Objectives of the Design
    • 4.2 Cohesion and Decomposition High level Model
    • 4.3 Control Center / Overall Dataflow Diagram
    • 4.3.1 Proposed System Operation Flowchart
    • 4.4 System Specification and Design
    • 4.4.1 Input and Output Specification
    • 4.4.2 Database Specification and Design
    • 4.4.3 Data Dictionary
    • 4.5 Choice and Justification of Programming Language
    • 4.6 Program Documentation
    • 4.7 Implementation Techniques
    • 4.7.1 System Testing
    • 4.8 Programming Module Specification
    • 4.8.1 Installation
    • 4.9 Computer Hardware Minimum Requirement
    • 4.10 Software Requirement
    • 4.11 Personnel / User Training
    • 4.12 File Maintenance Module

    CHAPTER FIVE

    SUMMARY, CONCLUSION AND RECOMMENDATION

    • 5.1 Introduction
    • 5.2 Summary
    • 5.3 Conclusion
    • 5.4 Recommendation

    REFERENCES

    APPENDIX A - “SOURCE CODE”

    APPENDIX B - “OBJECT PROGRAM”

    ABSTRACT

    This research work has led to the development of a data encryption system that organizations and individuals can use for secure data communication, and to keep private/secret information as confidential as possible. The Waterfall model was used in the analysis of the existing systems and identification of lapses/weaknesses. These weaknesses were corrected/checked by the new system developed using Python. The new system provides security to data/information by encrypting the message and then hides/embeds the encrypted form of the message in any type of image file. The importance of the study of information security cannot be over emphasized in our society

    today as it helps to save a lot of situation concerning information confidentiality, integrity, and it’s availability for only the intended person(s), and further help save information from attackers who may want to use the information to achieve some malicious intent, for probably selfish interests. The proposed system achieves this by encrypting a secret message using AES algorithm and hiding it in an image file using the LSB algorithm making it possible to maintain the integrity of the secret message.

    In this project we have presented a new system for the combination of cryptography and Steganography using two keys (user password and unique number) which could be proven a highly secured method for data communication. Cryptography, especially when combined with steganography, is a powerful tool which enables people to communicate without possible eavesdroppers even knowing there is a form of communication in the first place. The main advantage of this Crypto-Stego System is that the method used for encryption, AES, is very secure and the LSB transformation Steganography techniques are very hard to detect. This proposed method can also withstand different attacks and thus a very strong and robust method of data security can be obtained.

    Design and Implementation of a Crypto-Stego Security System

    CHAPTER ONE

    Introduction

    1.1 Background Of Study

    In the present world of communication, one of the necessary requirements to prevent data theft is securing the information. Security has become a critical feature for thriving networks and in military alike. Cryptography and Steganography are well known and widely used techniques that manipulate information (messages) in order to cipher or hide their existence. These techniques have many applications in computer science and other related fields: they are used to protect military messages, E-mails, credit card information, corporate data, personal files, etc. This protection is done or carried out by first generally encrypting the data, then hiding it so as to only be discovered for whom it is meant or intended for. Before the modern era, cryptography was concerned solely with message confidentiality (.i.e., encryption − conversion of messages from a comprehensible form into an incomprehensible one, and back again at the other end), rendering it unreadable by interceptors or eavesdroppers without the secret knowledge which is the key needed for decrypting the message. In recent decades, the field has expanded beyond confidentiality concerns to include techniques for message integrity checking, sender/receiver identity authentication, digital signatures, interactive proofs, and secure computation, amongst others. Encryption attempts to ensure secrecy in communications, such as those of spies, military leaders, diplomats etc.

    Steganography (− hiding the existence of a message so as to keep it confidential) was also first developed in ancient times. An early example, from Herodotus (- a Greek historian), concealed a message − a tattoo on a slave’s shaved head − under the regrown hair. In modern terms, Steganography is usually implemented computationally, where cover works such as text files, images, audio files, and video files are altered in such a way that a secret message can be embedded within them. Although Steganography techniques are very similar to that of digital watermarking, one big distinction must be highlighted between the two. In digital watermarking, the focus is on ensuring that nobody can remove or alter the content of the watermarked data, even though it might be plainly obvious that it exists. Steganography on the other hand, focuses on making it extremely difficult to tell that a secret message exists at all. If an unauthorized third party is able to say with high confidence that a file contains a secret message, then steganography has failed.

    …

    CHAPTER TWO

    2.0 Literature Review

    2.1 Introduction

    This chapter focuses on the review of related literature. A literature review includes the current knowledge as well as theoretical and methodological contributions to a particular topic. It documents the state of the art with respect to the topic you are writing. It surveys the literature in the topic selected. In this research work the literature review includes the …

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