Struct chacha20::ChaCha20Legacy

pub struct ChaCha20Legacy(_);

This is supported on crate feature legacy only.

The ChaCha20 stream cipher (legacy “djb” construction with 64-bit nonce).

The legacy Cargo feature must be enabled to use this.

Trait Implementations

impl NewCipher for ChaCha20Legacy

type KeySize = U32

Key size in bytes

type NonceSize = U8

Nonce size in bytes

fn new(key: &Key, nonce: &LegacyNonce) -> Self

Create new stream cipher instance from key and nonce arrays.

fn new_from_slices(key: &[u8], nonce: &[u8]) -> Result<Self, InvalidLength>

Create new stream cipher instance from variable length key and nonce given as byte slices.

impl StreamCipher for ChaCha20Legacy

fn try_apply_keystream(&mut self, data: &mut [u8]) -> Result<(), LoopError>

Apply keystream to the data, but return an error if end of a keystream will be reached.

fn apply_keystream(&mut self, data: &mut [u8])

Apply keystream to the data.

impl StreamCipherSeek for ChaCha20Legacy

fn try_current_pos<T: SeekNum>(&self) -> Result<T, OverflowError>

Try to get current keystream position

fn try_seek<T: SeekNum>(&mut self, pos: T) -> Result<(), LoopError>

Try to seek to the given position

fn current_pos<T>(&self) -> T where
    T: SeekNum, 

Get current keystream position

fn seek<T>(&mut self, pos: T) where
    T: SeekNum, 

Seek to the given position