ABSTRACT
Information is protected from unwanted access using cryptography, or encryption, which encrypts it using a cypher system. It is only possible to decrypt an encrypted communication if you have the right keys and algorithm. It is frequently utilized for safe network communication. Encryption uses a mathematical technique and a key to convert plain text into cypher text. The increase in processing power made DES insecure. Depending on the length of the key, AES is a block cypher that encrypts data in blocks of 128 bits. Multiple encryption rounds are required. AES has multiple implementations and a mathematical description. For encryption and decryption, a single key consisting of 128, 192, or 256 bits is utilized. Side channel attacks can be lessened by employing strategies such avoiding arrays, making sure that time intervals are constant, and using specific chips.
