1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

use crate::{Buffer, PartialBuffer};

macro_rules! derive_encrypt_decrypt {
    ($name:ident, $err:ident) => {
        impl Encrypt for $name {
            type Error = $err;

            fn encrypt(&self, buf: Buffer) -> Result<Buffer, Self::Error> {
                self.encrypt_partial(buf.into()).map(|b| b.into())
            }
        }

        impl Decrypt for $name {
            type Error = $err;

            fn decrypt(&self, buf: Buffer) -> Result<Buffer, Self::Error> {
                self.decrypt_partial(buf.into()).map(|b| b.into())
            }
        }
    };
}

mod caesar;
pub use self::caesar::Caesar;

mod affine;
pub use self::affine::Affine;

mod vigenere;
pub use self::vigenere::Vigenere;

mod transposition;
pub use self::transposition::Transposition;

pub trait Encrypt {
    type Error: std::error::Error;

    fn encrypt(&self, buf: Buffer) -> Result<Buffer, Self::Error>;
}

pub trait Decrypt {
    type Error: std::error::Error;

    fn decrypt(&self, buf: Buffer) -> Result<Buffer, Self::Error>;
}

pub trait PartialEncrypt: Encrypt {
    fn encrypt_partial(&self, buf: PartialBuffer) -> Result<PartialBuffer, Self::Error>;
}

pub trait PartialDecrypt: Decrypt {
    fn decrypt_partial(&self, buf: PartialBuffer) -> Result<PartialBuffer, Self::Error>;
}