Design And Implementation Of A Robust Steganographic System For Embedment Of Sensitive Information

Project and Seminar Material for Computer Science and Computer Engineering

Project and Seminar Material for Computer Science and Computer Engineering


Chapter one


Introduction

1.0 Background of the Study

In this digital world of information transmission, information is the heart of computers, transmission and global economy transaction. In ensuring the security of data and information (confidentiality integrity, accuracy and authenticity) as characteristics of information, the concept of data and information hiding have attracted people to come up with creative solutions to protecting sensitive information from being intercepted or falling into wrong hands. The problem of protecting this sensitive information from unintended users is becoming complex.

In a modern society, and Nigeria in particular, the protection of sensitive information involves many, interdependent policies and technological issues relating to information confidentiality, integrity, authenticity, anonymity, utility (Gideon Gbaden Amah 2015).

Many users would prefer to use the Internet as their primary medium of transmission with the advancement in technologies since the introduction of cashless economy in Nigeria where the Internet is the main medium of transaction across the Nigerian state.

Data security means the protection of data from unauthorized user (hackers, attackers or adversaries) and providing high security so as to prevent modification and interception of sensitive information (Gideon Gbaden Amah 2015) in transmission. The security of sensitive information has attracted more attention in recent times due to massive increase in transfer, research and transaction over the Internet.

In improving security of information transmission and transaction over the Internet, so many techniques for hiding sensitive information are increasing day by day with more sophisticated approaches. The digital media used for this secret (hidden) transmission and transaction include text, images, audio, video, and protocol which provides excellent carriers for hidden information. Due to the growth of information transmission and transaction, the security of sensitive information has become a major concern (S. A Laskar,etal 1990). The deployed techniques for improvement of security of information include, watermarking, fingerprinting, cryptography, and steganography etc.

Watermarking and fingerprinting are closely related technologies to steganography (KavithKadam 2013), which are primary concerned with the protection of intellectual property right.

Watermarking marks all the instance of an object in the same way. Signature is the kind of information hidden in water making to signify that the originality or ownership for the purpose of copyright property. Fingerprinting embeds different unique mask (KavithKadam 2012) in distinct copies of the carrier object that are supplied to different customers. With this, the intellectual owner identifies the customer that break or violates their licensing agreement by supplying the property to third parties. Cryptography is a techniques used in securing the secrecy of transmitted information. It is not often enough to keep the contents of a message secret. Various methods have been developed in encrypting and decrypting data in order to keep the information secret. It may also be necessary to keep the existence of information secret.

Steganography is a technique used in keeping the existence of an information secret.

Fig1: Basic Steganography Architecture.


1.1 Motivation

The research work is motivated by the challenges of transmitting sensitive information from the sender to a targeted recipient with an interception of a third party or adversary considering the security challenges of confidentiality, integrity and availability of data in Nigeria.

1.2 Objective or Goal of the Research Work

The basic goal of the work is to provide secret transmission of the sensitive information, other goals include

  1. To design a robust steganographic: algorithm to embed sensitive information.
  2. To transmit the embedded (stego image) to a target recipient.
  3. To decrypt the embedded image to obtain the sensitive information.
  4. To successful transmit the message or information without interception of an adversary or attacker.
  5. To generate a secret key for encrypting and decrypting of the message.
  6. To transmit the secrete key to the recipient.

1.3 Applicable Areas of the Proposed Work

Considering cyber security and other related security challenges, the work if adopted could provide the security of data and information to the following;

  1. Aid transmission of high-level or top-secret documents between governments and her agencies.
  2. In identity management (identity card), details of personal information could be embedded in JPEG image as passport photography.
  3. It could be implemented by INEC in safely online election in online voting system.
  4. Use by the Nigeria Military Force in communication system.
  5. Use in the medical field to communicate hidden details of patients’ treatment as it could be embedded into images and send to authorized users so as to reduce time period of carry file, cost and protection of the resulting information.

1.4 Scope and Limitation

  1. The research work was mainly targeted on image steganography by embedding the sensitive information in a stego image.
  2. The statistical analysis of the stego-image was not considered.
  3. Java platform format was developed to embed the information.

Chapter Five


5.0 Summary, Recommendation, Further Work and Conclusion

5.1 Summary

In the experiment, sensitive information of different sizes were successfully embedded into different set of images ranging from 7kb to 20kb. In the model, extraction of the sensitive information was done in reverse process of embedding from the stego-image using the same stego key or secret key. If the key does match the sensitive information will remain unreadable.

The sensitive information embedded into the image was extracted successfully. It was observed that the human eye cannot distinguish the cover image and the stego image and complexity of the image is not disturbed as illustrated in chapter four.


5.2 Recommendation

The researcher recommend the deployment of the research work to most government parastals, ministry, banks and individual businesses.

The research recommend further research work in security with emphasis on steganography in determining the robust and most highly secured steganography technique.


5.3 Suggestion for Further Work

Further work on this research Cloud Computing Based Security with Application in Steganography is to be improve on;

  1. The compression ratio to the text document can be improved with different algorithms.
  2. Different image formats like .BMP. MPEG. .MP3.
  3. The security using LSB Algorithm is good but we can improve on it by varying the carriers as well as using different keys for encryption and decryption.

5.4 Conclusion

In this present world, information transfer using Internet is rapidly growing because it is so easier, cheaper and as well as faster to transfer sensitive information from a source to a required destination via the Internet. So many individuals and businesses use to transfer business documents, important information via the Internet. Security of the Internet is an important issue while transferring the data using the Internet because any unauthorized individual might hack or attack the data in transit and make it useless or obtain the information unintended for him.

The proposed approach in this research uses a steganographic technique that would provide security of sensitive information in transit from the sender to the receiver. The application creates a stego-image in which the personal data is embedded and is protected with a secret key which is highly secured and sent to the recipient.

The research is aim at providing a highly secured steganography technique. The proposed technique protects the information from stego attacks, the image resolution does not change and it is negligible when the image is embedded and the stego-image is protected with a highly secured secret key. The researcher used the a Java platform based on DCTfrequency domain algorithm in the research for developing the application which is faster, reliable and compression ratio is moderate compare to other algorithms. The transform domain embedding models are found to be more robust than other embedding models which are susceptible to imaging processing type of attack.

It is a method through which the existence of the secret information can be kept secret. This is accomplished through hiding sensitive information in another information. In this research, the sensitive information is hidden from a third party using an algorithm developed using Java platform written to embed the information. The statistical analysis of embedding was not determined in the research but the result was not perceivable with human eyes.


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