Struct Salsa20 

pub struct Salsa20 { /* private fields */ }

Salsa20 stream cipher (20-round variant).

Salsa20 keeps its 16-word state plus one cached 64-byte keystream block. apply_keystream XORs the generated stream into caller-owned buffers, so the same method handles both encryption and decryption.

Implementations

impl Salsa20

pub fn new(key: &[u8; 32], nonce: &[u8; 8]) -> Self

Create a Salsa20 instance with a 32-byte key and 8-byte nonce.

pub fn with_key_bytes(key: &[u8], nonce: &[u8; 8]) -> Self

Create a Salsa20 instance with either a 16-byte or 32-byte key.

pub fn with_counter(key: &[u8], nonce: &[u8; 8], counter: u64) -> Self

Create a Salsa20 instance at an arbitrary 64-byte block counter.

pub fn new_wiping(key: &mut [u8; 32], nonce: &mut [u8; 8]) -> Self

Create with a 32-byte key and wipe the caller’s key and nonce buffers.

pub fn with_key_bytes_wiping(key: &mut [u8], nonce: &mut [u8; 8]) -> Self

Create with a 16- or 32-byte key and wipe the caller’s key and nonce.

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

XOR the Salsa20 keystream into buf in place.

pub fn fill(&mut self, buf: &mut [u8])

Fill buf with keystream bytes by XORing into the existing contents.

pub fn keystream_block(&mut self) -> [u8; 64]

Return the next 64 bytes of keystream, respecting the current stream position.

pub fn set_counter(&mut self, counter: u64)

Seek to a 64-byte block boundary.

Trait Implementations

impl Drop for Salsa20

fn drop(&mut self)

Executes the destructor for this type.

impl StreamCipher for Salsa20

fn fill(&mut self, buf: &mut [u8])

XOR keystream bytes into buf in place.

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

Alias for Self::fill for callers that prefer this terminology.