Struct Poly1305

pub struct Poly1305 { /* private fields */ }

Define the Poly1305 struct for the Poly1305 MAC algorithm.

Implementations

impl Poly1305

pub fn new() -> Self

Creates a new instance of Poly1305.

This constructor initializes a new Poly1305 instance with default values. It is typically used to start a new message authentication code (MAC) computation.

Returns

A new instance of Poly1305.

Trait Implementations

impl AlgorithmKeyInit for Poly1305

fn init(&mut self, key: &[u8])

Initializes the Poly1305 state with the given key.

This method sets up the Poly1305 state using a 32-byte key. The key is split into two parts: the r array (for the algorithm’s internal state) and the pad (used in the final computation steps).

Arguments

• key - A byte slice containing the 32-byte key.
• _iv - An optional Initialization Vector, not used in Poly1305.

Returns

A mutable reference to the initialized Poly1305 instance.

Notes

The Initialization Vector (_iv) is not used in Poly1305 and can be passed as an empty slice.

impl AlgorithmProcess for Poly1305

fn process(&mut self, data: &[u8]) -> Vec<u8>

Processes the given data and computes the MAC.

This method processes the input data in 16-byte blocks to compute the message authentication code (MAC). If the data does not divide evenly into 16-byte blocks, the final block is padded as necessary.

Arguments

• data - A byte slice representing the data to be processed.

Returns

A vector of bytes (Vec<u8>) containing the computed MAC.

impl Default for Poly1305

fn default() -> Poly1305

Returns the “default value” for a type.

impl AEADAlgorithm for Poly1305