Enum Padding 

#[non_exhaustive]
pub enum Padding {
    None,
    Buckets {
        floor: usize,
        step: usize,
    },
}

Available on crate feature cose only.

How many zero bytes a sender appends to the signed envelope inside the encryption, so the ciphertext’s length shows little about the message.

Receivers strip any number of zeros, so the policy is the sender’s alone and can change without them.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None

No padding: the plaintext is the signed envelope alone.

Buckets

Zeros after the signed envelope, up to the smallest size that fits. Sizes start at floor, and each next one is the previous one plus 1/step of it, rounded up.

Fields

floor: usize

Smallest padded size in bytes, which must be nonzero.

step: usize

Each size grows by itself divided by step, rounded up, and step must be nonzero.

Trait Implementations

impl Clone for Padding

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Padding

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

Formats the value using the given formatter.

impl Eq for Padding

impl PartialEq for Padding

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Padding