Struct Key 

pub struct Key<const N: usize>(/* private fields */);

定长密钥（如 Key<32>、Key<16>）。构造后不可变。

Implementations

impl<const N: usize> Key<N>

pub fn new(bytes: [u8; N]) -> Self

pub fn from_slice(bytes: &[u8], label: &'static str) -> Result<Self>

从切片构造；长度不符返回 Error::InvalidKeyLength。

pub fn as_bytes(&self) -> &[u8; N]

Trait Implementations

impl<const N: usize> Debug for Key<N>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<const N: usize> Drop for Key<N>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.