Image Steganography with Blowfish Algorithm

Abstract

Steganography is a long-standing method of information concealment. It may be applied in a variety of ways. For example, it can be used to create a message that conceals the existence of a secret message that everyone can read and understand if they find it. To remedy this issue, the message was written in a different coded language that was only understood by the sender and the receiver. The method of sending a message using a coded language is known as cryptography; the process of encoding the message is known as encryption; and the message itself is known as cipher text. One of the numerous unique algorithms used in cryptography is the Blowfish algorithm. The purpose of this study is to present an overview of image steganography, covering its techniques and applications. It also tries to figure out what constitutes a good steganographic algorithm. We are employing the Blowfish method in conjunction with image-based steganography, which conceals information inside images such that, even in the unlikely event that the message is discovered, only the intended receiver can decipher it, in order to strengthen the security of the original message being delivered.