README.md

Barebones Viginere

See: https://en.wikipedia.org/wiki/Vigenère_cipher

Usage

go run viginere.go <passphrase> <message>

Example

$ go run viginere.go lemon "attack at dawn"
Key: lemon
Phrase: attack at dawn
Ciphertext: LXFOPVEFRNHR
Plaintext: ATTACKATDAWN