Caesar cipher is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.
go run caesar-cipher.go [options]-e (encrypt) encrypt the message
-d (decrypt) decrypt the message
-k (key) key that will be used to encrypt and decrypt the message, if not selected, key 13 will be used as default
-m (message) message that will be encrypted or decryptedgo run caesar-cipher.go -e -k 5 -m potato
Key = 5
Message original = potato
Message encrypt = utyfyt