Abstract: Digital data security is of utmost importance in today's world, both cryptography and steganography are important tools to ensure the confidentiality and integrity of the data. Cryptography involves transforming the plaintext into ciphertext using encryption techniques and then decrypting it back into plaintext using decryption techniques and steganography involves hiding data in plain sight by embedding it in cover media such as images, audio, or video. Both cryptography and steganography have their own strengths and weaknesses, they can be combined to provide even better protection for digital data. By encrypting the data before embedding it in cover media using steganography, we can ensure that even if the cover media is intercepted, the data remains secure as it is encrypted. Regarding audio steganography, the techniques you mentioned, such as LSB, Echo hiding, Phase coding, and Tone insertion, are commonly used. For example, LSB is a simple technique that involves replacing the least significant bits of audio samples with data bits, while Echo hiding involves modifying the echo of an audio signal to hide the data. The combination of cryptography and steganography can provide better protection for digital data. Audio steganography techniques such as LSB, Echo hiding, Phase coding, and Tone insertion can be used depending on the specific requirements of the application.

Keywords: Human auditory system, least significant bit, Peak signal-to-noise ratio, Rivest Cipher4, 3Data Encryption Algorithm.

PDF | DOI: 10.17148/IJARCCE.2023.124125

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