Struct Poly1305 

pub struct Poly1305 { /* private fields */ }

Poly1305 streaming MAC state.

Feeds data incrementally via update(), then produces the 16-byte authentication tag via finalize().

Implementations

impl Poly1305

pub fn new(key: &[u8; 32]) -> Poly1305

Creates a new Poly1305 MAC from a 32-byte key (r || s).

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

Feeds additional data into the MAC.

pub fn finalize(self) -> [u8; 16]

Finalizes the MAC and returns the 16-byte authentication tag.

pub fn mac(key: &[u8; 32], data: &[u8]) -> [u8; 16]

Computes the Poly1305 message authentication code as specified in RFC 8439.

key must be 32 bytes (r || s).

Example

use crypto::poly1305::Poly1305;

let key = b"0123456789abcdef0123456789abcdef";
let tag = Poly1305::mac(key, b"message");