Cryptography and steganography for secure communications Computer science essay
1 Introduction. Steganography is the art of covered or hidden writing. The purpose of steganography is secret communication to hide a message from third parties. This differs from cryptography, the art of secret writing, which aims to make a message unreadable to a third party but does not necessarily hide its existence. both cryptography and steganography to encode and embed the secret message to be sent. about a. Cryptography - The word cryptography takes its meaning from two different Greek words, 'Kryptos' meaning 'secret' and 'Graphein' meaning 'writing', so cryptography can be translated as secret writing or language. It is the art of converting clear text into cipher text using encryption techniques and vice versa. One of the biggest problems in establishing secure data transmission between two communicating parties has become a challenge. This is due to unexpected attacks during communication over an unsecured transmission channel. The security of secret data is guaranteed by cryptography and steganography. Therefore, this work introduces secure data. Cryptography is the study of various techniques to secure data from an unauthorized entity. In computer science, we try to develop strategies and practices for protecting sensitive data. Most of cryptography involves highly advanced mathematical functions used to secure data. So the sole purpose of the algorithms developed for this purpose is. data security is a very important part of cloud storage. This article presents an overview of a system that stores data about the. cloud after it is encrypted. So even if there is a security breach. Summary - Cryptography is the practice and study of techniques for secure communication in the presence of third parties. Steganography is the art and science of concealing secret information in additional information and can be defined as the study of invisible communication that classically deals with the ways of concealing its existence. Steganography and cryptography are two different techniques. The main approach in cryptography is to hide the contents of information or a message, making the message secret, while the main approach in steganography is to hide the presence of a message, making the communication secret. Judgement. Laxmi Shankar, Santosh and Karuna Shankar. 1,2. of Computer Science, Lucknow Public College of.