Struct ChaChaCore 

pub struct ChaChaCore<R: Rounds, V: Variant> { /* private fields */ }

The ChaCha core function.

Implementations

impl<R: Rounds, V: Variant> ChaChaCore<R, V>

pub fn get_block_pos(&self) -> V::Counter

Get the current block position.

pub fn set_block_pos(&mut self, pos: V::Counter)

Set the block position.

Trait Implementations

impl<R: Rounds, V: Variant> BlockSizeUser for ChaChaCore<R, V>

Available on crate feature cipher only.

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: Rounds, V: Variant> Debug for ChaChaCore<R, V>

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

Formats the value using the given formatter.

impl<R: Rounds, V: Variant> Drop for ChaChaCore<R, V>

Available on crate feature zeroize only.

fn drop(&mut self)

Executes the destructor for this type.

impl<R: Rounds, V: Variant> Generator for ChaChaCore<R, V>

Available on crate feature rng only.

fn generate(&mut self, buffer: &mut [u32; 64])

Generates 4 blocks in parallel with avx2 & neon, but merely fills 4 blocks with sse2 & soft

type Output = [u32; 64]

The output type.

fn drop(&mut self, output: &mut Self::Output)

Destruct the output buffer

impl<R: Rounds> IvSizeUser for ChaChaCore<R, Ietf>

Available on crate feature cipher only.

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 IvSizeUser for ChaChaCore<R20, Legacy>

Available on crate feature legacy only.

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

Initialization vector size in bytes.

fn iv_size() -> usize

Return IV size in bytes.

impl<R: Rounds> KeyIvInit for ChaChaCore<R, Ietf>

Available on crate feature cipher only.

fn new(key: &Key, iv: &Array<u8, U12>) -> 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.

impl KeyIvInit for ChaChaCore<R20, Legacy>

Available on crate feature legacy only.

fn new(key: &Key, iv: &LegacyNonce) -> 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.

impl<R: Rounds> KeySizeUser for ChaChaCore<R, Ietf>

Available on crate feature cipher only.

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 KeySizeUser for ChaChaCore<R20, Legacy>

Available on crate feature legacy only.

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: Rounds, V: Variant> SeedableRng for ChaChaCore<R, V>

Available on crate feature rng only.

type Seed = [u8; 32]

Seed type, which is restricted to types mutably-dereferenceable as u8 arrays (we recommend [u8; N] for some N).

fn from_seed(seed: Self::Seed) -> Self

Create a new PRNG using the given seed.

fn seed_from_u64(state: u64) -> Self

Create a new PRNG using a u64 seed.

fn from_rng<R>(rng: &mut R) -> Self

where R: Rng + ?Sized,

Create a new PRNG seeded from an infallible Rng.

fn try_from_rng<R>(rng: &mut R) -> Result<Self, <R as TryRng>::Error>

where R: TryRng + ?Sized,

Create a new PRNG seeded from a potentially fallible Rng.

impl<R: Rounds, V: Variant> StreamCipherCore for ChaChaCore<R, V>

Available on crate feature cipher only.

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

Return number of remaining blocks before the cipher wraps around.

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

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

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

Write keystream block.

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

Write keystream blocks.

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

Apply keystream block.

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

Apply keystream blocks.

fn apply_keystream_blocks_inout( &mut self, blocks: InOutBuf<'_, '_, Array<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: Rounds, V: Variant> StreamCipherSeekCore for ChaChaCore<R, V>

Available on crate feature cipher only.

type Counter = <V as Variant>::Counter

Counter type used inside stream cipher.

fn get_block_pos(&self) -> Self::Counter

Get current block position.

fn set_block_pos(&mut self, pos: Self::Counter)

Set block position.

impl<R: Rounds, V: Variant> ZeroizeOnDrop for ChaChaCore<R, V>

Available on crate feature zeroize only.