A Text Steganographic System Based on Word Length Entropy Rate

Today in this digital era everything (data) can be digitized and can be transmitted over the communication networks. But not withstanding with this advantage it also has a downside i.e. the digitized data can be easily accessed illegally, it can be tampered with and copy. The issue of providing security to the information has become increasingly important with the development of computer and expanding its use in different areas of one's life and work[4]. One of the grounds discussed in information security is the exchange of information through the cover media. In this, different methods such as cryptography, steganography, etc., have been used. Many approaches were introduced for making the data secure. But the efficient utilization of those approaches isn't defined i.e. which approach to be used according to the situations. This paper implements five approaches of Text Steganography to compare their Time and Space complexities by from considering three Text Steganography algorithms from the study of Monika Agarwal's paper entitled "Text Steganographic Approaches :A Comparison"[1] and bring out the comparative results of algorithm for some particular secret text. The results of the comparisons are shown in form of bar charts and pie charts.

International Journal of Advance Research and Innovative Ideas in Education, 2017

In current era of information technology, it is difficult to secure information from unlawful activities because of these reasons different strategies like Cryptography & Steganography are used .Cryptography is an area to encrypt & decrypt information & Steganography is methodology to hide the existence of a message from user eyes. By using Cryptography we can convert the original message into unreadable form & By Applying Text Steganography message can be hidden inside text cover message so both techniques can help to increase security of a message. In this paper we have mention some of text Steganography techniques and related work that had done to secure data using text Steganography.

Sending encrypted messages frequently will draw the attention of third parties, i.e. crackers and hackers, perhaps causing attempts to break and reveal the original messages. In a digital world, steganography is introduced to hide the existence of the communication by concealing a secret message inside another unsuspicious message. Steganography is often being used together with cryptography and offers an acceptable amount of privacy and security over the communication channel. This paper presents an overview of text steganography and a brief history of steganography along with various existing text-based steganography techniques. Highlighted are some of the problems inherent in text steganography as well as issues with existing solutions. A new approach is proposed in information hiding using inter-word spacing and inter-paragraph spacing as a hybrid method. Our method offers dynamic generated stego-text with six options of maximum capacity according to the length of the secret message. This paper also analyzed the significant drawbacks of each existing method and how our new approach could be recommended as a solution.

IRJET, 2023

Recently, capabilities of attackers have been increased dramatically in terms of compromising secret data exchanged among users over the Internet. Using cryptographic approaches contribute to ensure confidentiality of data, but they do not provide secrecy of communication between the connected parties. Steganography can be used to strengthen cryptographic approaches by hiding secret data within innocent audios after passing an encryption stage. This adds second level of protection against attacks as well as hiding the communication itself between sender and receiver. This work proposed an enhanced steganography-based approach to protect secret data by embedding within audio files. Encryption using 3-DES is employed to create the first defense, while hiding in Least Significant Bit (LSB) creates the second defense with respect of ensuring high matching between cover file and stego file, high resistance against attacks, and high accuracy of retrieving the hidden data. The proposed approach achieves better performance in terms of PSNR, SSIM, and correlation.

Journal of Advanced Science and Engineering Research, 2017

Steganography is the art of hiding information in other information in order to hiding the fact that communication is taking place. There are different types of steganography but text are the most popular because of their frequency on the Internet. It serves as a better way of securing message than cryptography which only conceals the content of the message not the existence of the message. In this paper, a new method of text steganography was applied to embed information in text by Create a new numbering system based on five characters. As which known there are five characters in ASCII table have a null size unlike other known characters which are (0129, 0141, 0143, 0144 and 0157). Anyone can test them by press a (long ALT+ Number). The proposed system can be illustrated by five steps. In the first step the user have to insert a secret message that he want to hide it and a cover message. The second step include encrypt a secret message to base64 in order to avoid unexpected symbols...

2016

Steganography and cryptography are methods in information hiding. Cryptography scrambles the secret message, whereas steganography conceals a secret message in a carrier medium. An audio, video, image, and text can be used as a cover medium for hiding messages in steganography. The final output of steganography is a stego object that is sent to a receiver using a stego key. Suspiciousness of a generated stego text will encourage eavesdroppers to reveal the hidden message from stego text. Having reviewed substitution, injection, and propagation techniques for steganography, this paper discovers that there is a suspicion in the generated stego text. It is also discovered that text steganography using Genetic Algorithm (GA) is less focused by researchers compared to image and audio. Accordingly, this paper proposes that the adoption of GA should be focused in future works to protect stego text from suspiciousness due to the effectiveness and efficiency used in other media. Suspiciousne...

This paper compares eight proposed methods using steganography of Arabic language texts for different search algorithms to consider a secret key. All methods use random numbers to generate the secret key. The objectives are to evaluate each method and to select the best method that provides the best solution suitable to hide the Arabic language texts. Secret sharing is the fourth-best method in security, linear regression is the best method for transparency and capacity of secret message hiding, whereas singular value decomposition is the best method in terms of security and robustness, Huffman code provides secret message compression security and transparency, and steganography in Microsoft Word documents uses the protocol in layer one of single–double quote, which is weak in security. Conversely, the random subtraction of two images method is the best algorithm in terms of security, robustness, and capacity, while Kashida and Single–double quote are the best methods for security, transparency, and robustness, steganography of twice secret messages in layer one is the best method for security and robustness. Of all the aforementioned security methods, secret sharing is the best overall security method.

2011

Encrypted messages sending frequently draws the attention of third parties, perhaps causing attempts to break and reveal the original messages. Steganography is introduced to hide the existence of the communication by concealing a secret message in an appropriate carrier like text, image, audio or video. Steganography is of Greek origin and means "Covered or hidden writing". The carrier can be sent to a receiver without any one except the authenticated receiver only knows existence of the information. Steganography is often being used together with cryptography and offers an acceptable amount of privacy and security over the communication channel. It is an emerging area which is used for secured data transmission over any public media. In this paper, a novel text based steganography technique based on the use of indefinite articles 'a' or 'an' in conjunction with the non-specific or non-particular nouns in English language have been proposed. The authors also introduced a new code representation technique (SSCE -Secret Steganography Code for Embedding) at both ends in order to achieve high level of security. Before the embedding operation each character of the secret message has been converted to SSCE Value and then embeds to cover text. Finally stego text is formed and transmits to the receiver side. At the receiver side different reverse operation has been carried out to get back the original information.

Journal of theoretical and applied information technology, 2017

Steganography is a secret writing wherein one person communicates with another without drawing suspicion to the secret communication through the medium. Text steganography is regarded the most difficult carrier to conceal secret data with because of its insufficient redundant information compared to image, audio, or video files. In this paper, we propose a new method for concealing information in English writing using non-printing characters, such as zero width non-joiner (ZWNJ) and zero width joiner (ZWJ). This approach uses to text steganography on text files. Secret information is embedded inside the English script using two-letter words based on their locations, hence achieving steganography. Results show that the technique satisfies perceptual transparency and information hiding capacity in the cover file by comparing with two previous developed existing methods. However, the size of the cover and stego document increases by approximately (22.61%) from the original size.

Journal of emerging technologies and innovative research, 2016

Abstract: Information that is passed via network can be easily hacked. Security becomes mandatory to the information passed through communication lines. Steganography makes the information to be passed with no suspicion. The proposed method for securing MS-word document using look-alike fonts is used to hide secret message in a cover text. Hexadecimal code combined with pattern table of look-alike fonts. By using look-alike fonts give similar between cover and stego text. Two methods have been taken to compare with proposed method. In proposed MS-word document using look-alike fonts the embedding capacity is high when compared to other two techniques because all alphabet letters are used to hide and its similarity measure is high. Criteria have been used to measure the goodness of the algorithm. Similarity measures and capacity ratio are also used to find wellness of the proposed method.