Type Alias Key 

pub type Key = Array<u8, U32>;

Key type (256-bits/32-bytes).

Implemented as an alias for Array.

All ChaChaPoly1305 variants (including XChaCha20Poly1305) use this key type.

Aliased Type

#[repr(transparent)]
pub struct Key(pub [u8; 32]);

Tuple Fields

0: [u8; 32]