Struct chacha20::Cipher

pub struct Cipher<R: Rounds> { /* fields omitted */ }

ChaCha family stream cipher, generic around a number of rounds.

Use the ChaCha8, ChaCha12, or ChaCha20 type aliases to select a specific number of rounds.

Generally ChaCha20 is preferred.

Trait Implementations

impl<R: Rounds> Debug for Cipher<R>

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<R: Rounds> NewStreamCipher for Cipher<R>

type KeySize = U32

Key size in bytes

type NonceSize = U12

Nonce size in bytes

fn new(key: &GenericArray<u8, U32>, iv: &GenericArray<u8, U12>) -> Self

Create new stream cipher instance from variable length key and nonce.

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

Create new stream cipher instance from variable length key and nonce.

impl<R: Rounds> SyncStreamCipher for Cipher<R>

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<R: Rounds> SyncStreamCipherSeek for Cipher<R>

fn current_pos(&self) -> u64

Return current position of a keystream in bytes from the beginning.

fn seek(&mut self, pos: u64)

Seek keystream to the given pos in bytes.