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An Efficient Least Significant Bit Image Steganography with Secret Writing and Compression Techniques

This paper improves information security on the basis of the traditional LSB steganography by the integration of cryptography and data compression techniques. The proposed method improves the security of information hiding by introducing multiple layers of security processes such as encryption and decryption, compression, and data embedding technique, respectively. This paper employed the Vigenere cipher for the encryption and decryption of the secret file where the generated ciphertext is compressed using the Huffman coding algorithm. The proposed method is tested on three image couriers embedded with 16kB, 32kB, and 48kB secret messages. The empirical results show that the proposed methodology is more competent compared to the traditional LSB image steganography alone with respect to imperceptibility by Peak Signal to Noise Ratio (PSNR), Structural Similarity Index (SSIM), stego image file size, and Mean Square Error (MSE) metrics.