Introduction to Encryption and Decryption
Why Encryption is Needed Encryption is essential for protecting sensitive information from unauthorized access. It ensures privacy, secures data during transmission, and safeguards against cyber threats. History of Applications Encryption has been used for centuries to protect secrets. From ancient Roman ciphers to modern digital encryption, it has evolved to meet secure communication needs. Ancient Rome Caesar Cipher: Named after Julius Caesar, who used it to protect military messages. World War II Enigma Machine: Used by the Germans for secure communication, famously deciphered by Alan Turing and his team....