Struct ciphers::Playfair

pub struct Playfair { /* fields omitted */ }

A Playfair cipher implementation

Methods

impl Playfair

pub fn new(key: &str, pad: char) -> Self

Takes the key for the Playfair cipher and returns a corresponding Playfair struct.

Panics

• If key is not 25 chars in length.
• If key is not valid ascii.
• If key contains repeated characters.
• If pad is not contained within key.

Trait Implementations

impl Cipher for Playfair

fn encipher(&self, ptext: &str) -> CipherResult

Enciphers the given plaintext (a str reference) using the Playfair cipher and returns the ciphertext as a CipherResult.

Example

use ciphers::{Cipher, Playfair};

let playfair = Playfair::new("ZGPTFOIHMUWDRCNYKEQAXVSBL", 'X');

let ctext = playfair.encipher("DEFENDTHEEASTWALLOFTHECASTLE");
assert_eq!(ctext.unwrap(), "RKPAWRPMYSELZCLFXUZFRSNQBPSA");

fn decipher(&self, ctext: &str) -> CipherResult

Deciphers the given ciphertext (a str reference) using the Playfair cipher and returns the plaintext as a CipherResult.

Example

use ciphers::{Cipher, Playfair};

let playfair = Playfair::new("ZGPTFOIHMUWDRCNYKEQAXVSBL", 'X');

let ptext = playfair.decipher("RKPAWRPMYSELZCLFXUZFRSNQBPSA");
assert_eq!(ptext.unwrap(), "DEFENDTHEXASTWALLOFTHECASTLE");