The Journal of Korea Institute of Information, Electronics, and Communication Technology (한국정보전자통신기술학회논문지)

Korea Information Electronic Communication Technology (한국정보전자통신기술학회)
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An Effective Mixed Steganography Based on LSB and LDR

LSB와 LDR을 기반한 효과적인 혼합 스테가노그래피

  • Ji, Seon-Su (Department of software, Gangneung Wonju National University)
  • Received : 2019.10.18
  • Accepted : 2019.11.11
  • Published : 2019.12.31
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Abstract

In the Internet space, integrity and security must be maintained for secure and confidential communication, which ensures reliability between sender and receiver. Cryptography is an important factor in maintaining robustness against external attacks. For this purpose, encryption and steganography methods are used. Steganography is a method of hiding confidential information without making statistically significant changes to digital media. I propose a method of transforming the Hangul-Jamo consisting of choseong, jungseong and jongseong, and inserting them into RGB pixel values of the cover image. In order to improve security, a new blending method was used to hide the altered information in the lowest region. In this case, a mixture of LSB and LDR techniques was applied. PSNR was calculated for image quality. The PSNR of the proposed method is 43.225dB, which satisfies the lowest level.

인터넷 공간에서 송신자와 수신자 사이의 신뢰성을 보장하는 안전한 비밀 통신을 위해 무결성과 보안성이 유지되어야 한다. 또한 암호 기법은 외부 공격으로부터 견고성을 유지하기 위한 중요한 요소이다. 이를 위해 암호화 기술과 스테가노그래피 방법이 사용된다. 스테가노그래피는 디지털 미디어에 통계적으로 유의미한 변화를 주지 않으면서 비밀 정보를 숨기는 방법이다. 초성, 중성, 종성으로 이루어지는 한글 자모를 변형한 후 커버 이미지의 RGB 화소 값에 각각 삽입하는 방법을 제안한다. 보안성을 향상시키기 위해 대체되어 변형된 정보를 최하위 영역에 숨기는 새로운 혼합 방법을 사용하였다. 이때 LSB와 LDR 기법을 혼합하여 적용하였다. 제안된 방법의 이미지 품질을 위해 PSNR을 계산하였다. 제안된 방법의 PSNR은 43.225dB이며, 최저수준을 만족하였음을 확인하였다.

Keywords

References

  1. Susmita Soni and Sunita Chaudhary, "A Hybrid Approach of Steganography and Cryptography to improve Data Security", IJLTEMAS, Vol. 3, Issue 4, pp. 163-166, 2014.
  2. R. Halder, S. Sengupta, S. Ghosh and D. Kundu, "A Secure Image Steganography Based on RSA Algorithm and Hash-LSB Technique", IOSR Journal of Computer Engineering, Vol. 18, Issue 1, pp. 39-43, 2016.
  3. C. K. Chan and L. M. Cheng, "Hiding Data in Images by Simple LSB Substitution", Pattern Recognition, Vol. 37, No. 3, pp. 469-474, 2004. https://doi.org/10.1016/j.patcog.2003.08.007
  4. A. G. Meshram and Rahul Patil, "Secure Secret Key Transfer Using Modified Hash Based LSB method", International Journal of Computer Science and Information Technologies, Vol. 5, No. 6, pp. 7683-7685, 2014.
  5. A. Fatnassi, H. Gharsellaoui and S. Bouamama, "A New Hybrid Steganalysis Based Approach for Embedding Image in Audio and Image Cover Media", IFAC-PapersOnLine Vol. 49, No. 12, pp. 1809-1814, 2016. https://doi.org/10.1016/j.ifacol.2016.07.845
  6. V. Parihar, D. Gehlot and A. Choudhary, "A Steganography Implementation based on LSB & LDR Algorithm", 3rd Security and Privacy Symposium, 2015.
  7. Y. Yu Wai and E. Ei Myat, "Comparison of LSB, MSB and New Hybrid(NHB) of Steganography in Digital Image", International Journal of Engineering Trends and Applications, Vol. 5, Issue 4, pp. 16-19, 2018.
  8. H. G. Kim and B. M. Kang, "Frequency Analysis of Hangul Usage", Korea Cultural Research Center, Korea university, 1997.
  9. G. Swain and S. K. Lenka, "Classification of Image Steganography Techniques in Spatial Domain: A Study", International Journal of Computer Science&Engineering Technology, Vol. 5, No. 3, pp. 219-232, 2014.