LEAST SIGNIFICANT INVERSE BIT (LSIB) PADA STEGANOGRAFI HEADER MP3

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LSB STEGANO PADA KOMBINASI KRITPOGRAFI SIMETRIS CAESAR-VIGENERE

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Proceeding : KOMBINASI LSB-RSA UNTUK PENINGKATAN IMPERCEPTIBILITY PADA KRIPTO-STEGANO GAMBAR RGB

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Journal BEEI : Triple layer image security using bit-shift, chaos, and stream encryption

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Jounal IOP : Shallot Quality Classification using HSV Color Models and Size Identification based on Naive Bayes Classifier

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Journal of Physics: Conference Series : Dual Security Method for Digital Image using HBV Encryption and Least Significant Bit Steganography

Abstract

This study proposes a combination of two security techniques, namely steganography and cryptography. The proposed steganography technique is LSB because it has advantages in data embedding capacity and message imperceptibility. The LSB technique is very simple and predictable, so to improve message security HBV encryption techniques are applied. HBV encryption is applied to the message before pinning it. HBV encryption is a combination of the Beaufort algorithm and Vigenere cipher so that the message security will be stronger. By combining HBV and LSB encryption, the message can be hidden properly, and its awake. Based on the experimental results, the encryption and embedding process can run well and produce good quality encryption and stego images. Similarly, the extraction and decryption process can run perfectly.

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Proceeding ICITACEE : A Comparative Study of Image Cryptographic Method

Abstract:

Cryptography is a technique that is widely used to secure data transactions, this technique has also been widely used to secure digital images. There are several cryptographic techniques that are widely used in digital imagery, such as Arnold Transform, Rivest Code 4 (RC4) and One-time pad (OTP). This research aims to compare the performance of these three techniques on digital images. Performance of each encryption method is measured using entropy, SSIM, NPCR, UACI, computation time and histogram analysis. While the decrypted image is measured by the correlation coefficient and computation time using tic toc function. Based on the test results can be concluded that Arnold transforms algorithm only do a scramble on the image based on a certain iteration, so that the entropy and histogram values remain the same as the original image, only visually the image looks random and meaningless. RC4 has an advantage on entropy value and should not require a very long key, so it does not have to be a special memory to store the key. While OTP has advantages in the fastest computing time, and also superior values in NPCR, UACI, and SSIM. A random key of the same size as the original image makes encryption hard to decrypt. Although the size of the key to making the algorithm must provide a larger space for key storage.

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Conference iSemantic 2018 : A Robust Non-Blind Image Watermarking Method Using 2-Level HWT-DCT

Abstract:

The current technology allows to distribute digital images quickly and easily over the internet. Some digital images have copyright that needs to be protected. Watermarking is a technique for protecting copyright. In order for copyright is not easily lost with image manipulation, then watermarking technique must be robust. This study proposes a combination of Discrete Cosine Transform (DCT) based on two levels of the Haar Wavelet Transform (HWT) on image watermarking method with the aim of improving aspects of robustness and imperceptibility. The first step, host image is transformed with DWT as much as two levels to get LL2 subband. LL2 subband is a subband containing the image core information of two levels of wavelet transformation. Furthermore, LL2 subband split into small sub-blocks with the size of 4 * 4. The sub-blocks are transformed again using DCT. Insertion of watermarks using alpha variables with a certain value on the DC coefficient matrix. This value is used for managing the quality and strength of the watermark. To test the imperceptibility and watermark resistance used measuring instruments MSE, PSNR, and correlation coefficient. Based on the simulation results obtained a watermarked image is quite satisfactory with a relatively good imperceptibility value and resistant to various attacks.

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JURNAL : Encryption of Text Message on Audio Steganography Using Combination Vigenere Cipher and LSB (Least Significant Bit)

Abstract

The growing information technology is very rapidly, the more evolving crime techniques to find information that is confidential. The Internet is one of the main media in disseminating information. The use of security on the internet still needs to be developed. Based on these problems, the type of research undertaken in the writing of this final task is the type of experimental research by developing methods that have been done by previous researchers to hide secret data that is inserted into the audio * .wav so that the security and confidentiality of data can be guaranteed. data security can be done with various methods, including cryptography and steganography. Cryptography is a technique for encrypting messages and steganography is a message concealment technique. This insertion type uses binary ASCII character code. In the cryptographic process, using the Vigenere Cipher algorithm and in the steganography process using the algorithm (LSB) Least Significant Bits. The merger of the two techniques resulted in a better new digital image security system and increased the value of MSE, PSNR and Execution time. Then the test results in the evaluation using BER and histogram analysis. Good audio quality has a minimum value of 30 dB PSNR[1]. In the embedding process using combinations of vigenere and LSB methods, Audio 15 is the best audio compared to other audio. Audio 15 has a smaller MSE (0.001656) value and a larger PSNR (124.138499) value than any other audio when embeded messages *.txt file with character 4096.

Keywords

Cryptography, Vigenere Cipher, Steganography, LSB, WAV

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Jurnal : Teknik Penyembunyian dan Enkripsi Pesan pada Citra Digital dengan Kombinasi Metode LSB dan RSA

This study proposed a combination of steganography and cryptography techniques using LSB and RSA methods. RSA is a popular cryptographic technique that can be applied to digital imagery. Digital image pixel values range from 0 to 255, making the keys used in RSA limited enough and less secure. So in this study, it is proposed to convert pixel image value to 16 bits so that the key used can be more varied. Experimental results proved that there was a steady increase in security and imperceptibility. This was shown by the results of PSNR 57.2258dB and MSE 0.1232dB. This method was also resistant to salt and pepper attacks.

Penelitian ini mengusulkan kombinasi teknik steganografi dan kriptografi menggunakan metode LSB – RSA. RSA merupakan teknik kriptografi yang populer dapat diterapkan pada citra digital. Nilai piksel citra digital hanya berkisar 0 sampai 255. Hal ini membuat kunci yang digunakan dalam RSA cukup terbatas sehingga kurang aman. Dalam penelitian ini diusulkan untuk mengkonversi nilai piksel citra menjadi 16 bit sehingga kunci yang digunakan dapat lebih bervariasi. Hasil eksperimen membuktikan adanya peningkatan keamanan serta nilai imperceptibility yang tetap terjaga. Hal ini dibuktikan dengan hasil PSNR 57.2258dB, MSE 0.1232dB. Metode ini juga tahan terhadap serangan salt and pepper.

Keywords :Steganography;cryptography;LSB;RSA;image encryption

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