Trait BlockCipher 

pub trait BlockCipher {
    const BLOCK_SIZE: usize;

    // Required methods
    fn new(key: &[u8]) -> Self;
    fn encrypt_block(&self, block: &mut [u8]);
    fn decrypt_block(&self, block: &mut [u8]);
}

A symmetric block cipher (single-block primitive).

Higher-level modes (CBC, CTR, GCM) compose on top by chaining encrypt_block / decrypt_block calls; see crate::sm4::mode_cbc for the v0.2 single-shot CBC and crate::sm4::cbc_streaming for the v0.3 W5 streaming Sm4CbcEncryptor / Sm4CbcDecryptor.

Required Associated Constants

const BLOCK_SIZE: usize

Block size in bytes (e.g. 16 for SM4).

Required Methods

fn new(key: &[u8]) -> Self

Construct a cipher instance from a key.

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

Encrypt one block in place.

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

Decrypt one block in place.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl BlockCipher for Sm4Cipher

const BLOCK_SIZE: usize = BLOCK_SIZE