Struct chacha20::ChaChaCore

pub struct ChaChaCore<R: Unsigned> { /* private fields */ }

The ChaCha core function.

Trait Implementations

impl<R: Unsigned> BlockSizeUser for ChaChaCore<R>

type BlockSize = UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>

Size of the block in bytes.

fn block_size() -> usize

Return block size in bytes.

impl<R: Unsigned> Drop for ChaChaCore<R>

fn drop(&mut self)

Executes the destructor for this type.

impl<R: Unsigned> IvSizeUser for ChaChaCore<R>

type IvSize = UInt<UInt<UInt<UInt<UTerm, B1>, B1>, B0>, B0>

Initialization vector size in bytes.

fn iv_size() -> usize

Return IV size in bytes.

impl<R: Unsigned> KeyIvInit for ChaChaCore<R>

fn new(key: &Key, iv: &Nonce) -> Self

Create new value from fixed length key and nonce.

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

Create new value from variable length key and nonce.

fn generate_key( rng: impl CryptoRng + RngCore ) -> GenericArray<u8, Self::KeySize>

Generate random key using the provided CryptoRng.

fn generate_iv(rng: impl CryptoRng + RngCore) -> GenericArray<u8, Self::IvSize>

Generate random IV using the provided CryptoRng.

fn generate_key_iv( rng: impl CryptoRng + RngCore ) -> (GenericArray<u8, Self::KeySize>, GenericArray<u8, Self::IvSize>)

Generate random key and nonce using the provided CryptoRng.

impl<R: Unsigned> KeySizeUser for ChaChaCore<R>

type KeySize = UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>

Key size in bytes.

fn key_size() -> usize

Return key size in bytes.

impl<R: Unsigned> StreamCipherCore for ChaChaCore<R>

fn remaining_blocks(&self) -> Option<usize>

Return number of remaining blocks before cipher wraps around.

fn process_with_backend( &mut self, f: impl StreamClosure<BlockSize = Self::BlockSize> )

Process data using backend provided to the rank-2 closure.

fn write_keystream_block( &mut self, block: &mut GenericArray<u8, Self::BlockSize> )

Write keystream block.

fn write_keystream_blocks( &mut self, blocks: &mut [GenericArray<u8, Self::BlockSize>] )

Write keystream blocks.

fn apply_keystream_block_inout( &mut self, block: InOut<'_, '_, GenericArray<u8, Self::BlockSize>> )

Apply keystream block.

fn apply_keystream_blocks( &mut self, blocks: &mut [GenericArray<u8, Self::BlockSize>] )

Apply keystream blocks.

fn apply_keystream_blocks_inout( &mut self, blocks: InOutBuf<'_, '_, GenericArray<u8, Self::BlockSize>> )

Apply keystream blocks.

fn try_apply_keystream_partial( self, buf: InOutBuf<'_, '_, u8> ) -> Result<(), StreamCipherError>

Try to apply keystream to data not divided into blocks.

fn apply_keystream_partial(self, buf: InOutBuf<'_, '_, u8>)

Try to apply keystream to data not divided into blocks.

impl<R: Unsigned> StreamCipherSeekCore for ChaChaCore<R>

type Counter = u32

Counter type used inside stream cipher.

fn get_block_pos(&self) -> u32

Get current block position.

fn set_block_pos(&mut self, pos: u32)

Set block position.

impl<R: Unsigned> ZeroizeOnDrop for ChaChaCore<R>