Trait NewMac

pub trait NewMac: Sized {
    type KeySize: ArrayLength<u8>;

    // Required method
    fn new(key: &Key<Self>) -> Self;

    // Provided method
    fn new_from_slice(key: &[u8]) -> Result<Self, InvalidKeyLength> { ... }
}

Instantiate a Mac algorithm.

Required Associated Types

type KeySize: ArrayLength<u8>

Key size in bytes with which cipher guaranteed to be initialized.

Required Methods

fn new(key: &Key<Self>) -> Self

Initialize new MAC instance from key with fixed size.

Provided Methods

fn new_from_slice(key: &[u8]) -> Result<Self, InvalidKeyLength>

Initialize new MAC instance from key with variable size.

Default implementation will accept only keys with length equal to KeySize, but some MACs can accept range of key lengths.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T> NewMac for T

where T: FromBlockCipher, T::Cipher: NewBlockCipher,

Available on crate feature cipher only.

type KeySize = <<T as FromBlockCipher>::Cipher as NewBlockCipher>::KeySize