• Journal of Information Processing Systems
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• 제9권3호
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• pp.405-424
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• 2013

This research paper proposes a secured, robust approach of information security using steganography. It presents two component based LSB (Least Significant Bit) steganography methods for embedding secret data in the least significant bits of blue components and partial green components of random pixel locations in the edges of images. An adaptive LSB based steganography is proposed for embedding data based on the data available in MSB's (Most Significant Bits) of red, green, and blue components of randomly selected pixels across smooth areas. A hybrid feature detection filter is also proposed that performs better to predict edge areas even in noisy conditions. AES (Advanced Encryption Standard) and random pixel embedding is incorporated to provide two-tier security. The experimental results of the proposed approach are better in terms of PSNR and capacity. The comparison analysis of output results with other existing techniques is giving the proposed approach an edge over others. It has been thoroughly tested for various steganalysis attacks like visual analysis, histogram analysis, chi-square, and RS analysis and could sustain all these attacks very well.

• IEIE Transactions on Smart Processing and Computing
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• 제2권5호
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• pp.266-276
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• 2013

LSB-based steganography is a simple and well known information hiding technique. In most LSB based techniques, a secret message is embedded into a specific position of LSB in the cover pixels. On the other hand, the main threat of LSB-based steganography is steganalysis. This paper proposes an asynchronous-cellular-automata(ACA)-based steganographic method, where secret bits are embedded into the selected position inside the cover pixel by ACA rule 51 and a secret key. As a result, it is very difficult for malicious users to retrieve a secret message from a cover image without knowing the secret key, even if the extraction algorithm is known. In addition, another layer of security is provided by almost random (rule-based) selection of a cover pixel for embedding using ACA and a different secret key. Finally, the experimental results show that the proposed method can be secured against the well-known steganalysis RS-attack.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권1호
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• pp.382-403
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• 2020

Steganography is the art of concealing the existence of a secret data in a non-secret digital carrier called cover media. While the image of steganography methods is extensively researched, studies on other cover files remain limited. Videos are promising research items for steganography primitives. This study presents an improved approach to video steganography. The improvement is achieved by allowing senders and receivers exchanging secret data without embedding the hidden data in the cover file as in traditional steganography methods. The method is based mainly on searching for exact matches between the secret text and the video frames RGB channel pixel values. Accordingly, a random key-dependent data is generated, and Elliptic Curve Public Key Cryptography is used. The proposed method has an unlimited embedding capacity. The results show that the improved method is secure against traditional steganography attacks since the cover file has no embedded data. Compared to other existing Steganography video systems, the proposed system shows that the method proposed is unlimited in its embedding capacity, system invisibility, and robustness. The system achieves high precision for data recovery in the receiver. The performance of the proposed method is found to be acceptable across different sizes of video files.

• 한국통신학회논문지
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• 제33권1C호
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• pp.62-67
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• 2008

본 논문에서는 웨이블릿 기반의 자기참조 기법을 이용한 블라인드 워터마킹 방법을 제안한다. 먼저 원 영상을 웨이블릿 변환 한다. 다음 저주파 대역을 제외한 모든 부대역을 영(zero)으로 설정한 후 웨이블릿 역변환을 거쳐 자기참조 영상을 만든다. 그리고 원 영상과 자기참조 영상의 화소 값의 차이에 따른 특정 영역을 선택하여 랜덤 시퀀스를 만든 후 워터마크로 사용하여 삽입한다. 다양한 영상에 대해 워터마크의 삽입과 추출 실험한 결과 제안한 방법은 충실도가 높을 뿐만 아니라 JPEG 압축, 필터링, 샤프닝, 블러링 등의 영상처리, 그리고 노이즈에 안정성을 가지고 있다.