Steganography and Cryptography: A Systematic Review

Computer Science

The information world of today is a digital one. Nowadays, data transfer across an insecure channel is a major source of concern. Simultaneously, intruders are expanding across the internet and becoming increasingly active. As a result, some security precautions must be performed to protect the sensitive data from theft. Various ways have been used to encrypt and decrypt the secret data in order to keep it secret. The two most well-known techniques are cryptography and steganography. These two strategies, however, cannot perform as well on their own as they may when used jointly. Steganography is a Greek term that combines the words stegano and graphy. Steganography is a combination of the words stegano and graphy, which meaning "hidden writing." Steganography is a technique for concealing the fact that data is being sent. While cryptography converts a secret communication into a format that is not human readable, this technology has the drawback of making the encrypted message apparent to everyone. Intruders may try to get the secret message by using heat and trial methods over the internet in this way. By concealing the fact that some transmission is going place, steganography overcomes cryptography's constraint. The secret message is hidden in steganography in medium other than the original, such as text, image, video, and audio. These two strategies are distinct and have distinct meanings. As a result, we will cover several cryptography and steganographic approaches used to keep the communication secret in this paper.

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