A Protected Data Transfer through Audio Signals by Quantization combined with Blowfish Encryption: The Genetic Algorithm Approach

Abstract

Information is actually very potent. It is very common for data to be transferred over the internet, and everyone is responsible for ensuring its security. Data loss, data manipulation, and theft of confidential information are all effects of security events. Information security is a set of practices and protocols that help to secure this information. Such sensitive data can be secured using a variety of methods. Information security includes two important subfields: cryptography and steganography. With the help of cryptography and steganography, information is altered into an unintelligible state and made secret respectively. The purpose of this chapter is to preserve impenetrability and improve invulnerability. The objectives of this chapter are to be recognized by enhancement of Blowfish which is believed as highly secure algorithm; the implementation of chaotic sequence-quantization method for audio samples. The proposed work's performance is contrasted with that of the existing blowfish method and standard audio LSB algorithm. The following criteria shows the demonstration of analysis of the work done – Entropy values, Avalanche effect, Attack scenario, Execution time, PSNR value, Embedding capacity, Structural similarity index etc. The suggested system is the most effective method for intensifying protection and preserving the high caliber of the original entity.