Struct TripleDes 

pub struct TripleDes { /* private fields */ }

A Triple-DES (TDEA) cipher.

Implementations

impl TripleDes

pub fn new_3key(key: &[u8; 24]) -> Result<Self, DesKeyError>

Construct a 3TDEA instance from a 24-byte key K1 ∥ K2 ∥ K3.

Panics

Panics if the internal fixed-size key splits fail, which would only happen if this constructor were changed inconsistently with its type.

pub fn new_3key_wiping(key: &mut [u8; 24]) -> Result<Self, DesKeyError>

Construct a 3TDEA instance and wipe the provided key buffer.

pub fn new_2key(key: &[u8; 16]) -> Result<Self, DesKeyError>

Construct a 2TDEA instance from a 16-byte key K1 ∥ K2 (K3 = K1).

Panics

Panics if the internal fixed-size key splits fail, which would only happen if this constructor were changed inconsistently with its type.

pub fn new_2key_wiping(key: &mut [u8; 16]) -> Result<Self, DesKeyError>

Construct a 2TDEA instance and wipe the provided key buffer.

pub fn new_single_key(key: &[u8; 8]) -> Result<Self, DesKeyError>

Construct from three 8-byte keys. K1=K2=K3 is valid (degenerates to single DES) and is used by the NIST CAVP “KEYs” tests.

pub fn new_single_key_unchecked(key: &[u8; 8]) -> Self

Construct from one DES key used as K1 = K2 = K3 without weak-key checks.

pub fn new_single_key_wiping(key: &mut [u8; 8]) -> Result<Self, DesKeyError>

Construct from one DES key used as K1 = K2 = K3 and wipe the buffer.

pub fn encrypt_block(&self, block: &[u8; 8]) -> [u8; 8]

Encrypt a single 64-bit block: C = E(K3, D(K2, E(K1, P)))

pub fn decrypt_block(&self, block: &[u8; 8]) -> [u8; 8]

Decrypt a single 64-bit block: P = D(K1, E(K2, D(K3, C)))

Trait Implementations

impl BlockCipher for TripleDes

const BLOCK_LEN: usize = 8

Block length in bytes.

fn encrypt(&self, block: &mut [u8])

Encrypt one block in-place. Panics if block.len() != BLOCK_LEN.

fn decrypt(&self, block: &mut [u8])

Decrypt one block in-place. Panics if block.len() != BLOCK_LEN.

impl Drop for TripleDes

fn drop(&mut self)

Executes the destructor for this type.