International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 04 | Apr -2017
p-ISSN: 2395-0072
www.irjet.net
An Improved Image Steganography Technique based on LSB Chetan G. Tappe1, Anil V. Deorankar2 P.G. Student, Department of Computer Engineering, Govt. College of Engineering, Amravati, India 1 Associate Professor, Department of Information Technology, Govt. College of Engineering, Amravati, India 2 1
2
-------------------------------------------------------------------------------------------------------------------------------------------------------
Abstract - The propose paper introduces of secure communication in social demand like Facebook, twitter ,networking site etc. purpose of secure data like text, image, video, audio. Steganography is different type of data hiding technique for robustness , high capacity ,security ,embedded data , visibility ,PSNR, payload capacity ,term of steganography in this paper novel of image steganography is an established method for hiding data from an Unauthorized access of original image data cover for target image .then using encryption key for add embedded data they must be extract data using encryption key for separated data final got in original image. a novel image steganography technique based on most significant bits (MSB) of image pixels is proposed. Improvements in signal to noise ratio. Usually, the hackers focus on LSB bits for secret data extraction but the recommended technique utilizes the MSB bits that make it more secure from unauthorized access.
proposed method the embedding of the secret information is done on a 16 bit color image by using a secure hash function. Similarly, we can extract the secret information from the stego-image. By this technique we can embed 0, 1, 2 or 3 bits of the secret information starting from the least significant bit position of the cover image. Important issue and steganography offer a very reliable solution for such problems. Steganography is an art and science of embedding secret message into cover medium. In steganography, secret message is embedded in an appropriate carrier object that may be image, video, sound or other file to be transmitted over internet and embedding is parameterized by a key that makes difficult to even detect the presence of data and further to find a key to access it. Once cover object is embedded, it is known as stego object. Steganography had been in use from historical times. Simmon stated that steganography also commonly known as ‘Prison’s Problem’ because in earlier times prisoners used it in prisons for communication purposes. Most basic method of steganography is to utilize the redundant information available in digital medium. There is an increasing interest in using images as cover media for stenographic communication and detection of covert communications that utilize images has become an important issue.
Keyword- Steganography, LSB, Stego image, embedded data. Cover image. 1. INTRODUCTIONS In cryptography secret text is converted into cypher text, while in steganography the secret text remains the same but it is embedded in another format of data. Today, in the presence of powerful communication systems, protecting the secret information from the hackers is a challenging task. Steganography hide the existence of information and protects secret information from unauthorized access. A stenographic system consists of three components, namely: Plain text, Cover file, and Stego file. Secret information to be protected is known as plain text. Cover file can be text, image, audio or video in which data is embedded. Stego file is the output of the stenographic system that contains the hidden information. The proposed research work introduces an innovative technique in steganography to maintain the quality of the cover image and also increase the security. The work is based on the color image steganography in spatial domain with maximum data capacity. Using this method the perceptible quality degradation will be minimized and security will be enhanced. In this
© 2017, IRJET
|
Impact Factor value: 5.181
An RGB channel based image steganography technique is proposed. In this method, a bit of hidden information is inserted within 3rd to 8th bit position of either blue component or green component or red component of a pixel. A hash function and a secret key are used to select the data embedding position inside the color byte. In this method, only a single bit can be inserted into a color byte by changing two LSBs of both the blue and green components. Even if data is not inserted into a pixel, both LSBs of blue and green components are changed. The payload capacity as well as the PSNR is lower because two lower significant bits are changed when secret data is inserted.
|
ISO 9001:2008 Certified Journal
|
Page 1234