Struct HeaderBinding 

pub struct HeaderBinding<'a> {
    pub salt: &'a [u8; 16],
    pub kdf_memory: u32,
    pub kdf_iterations: u32,
    pub kdf_parallelism: u32,
    pub kdf_key_length: u8,
    pub content_nonce: &'a [u8; 24],
    pub filename_nonce: &'a [u8; 24],
}

The fixed header fields bound as associated data to every v2 AEAD operation.

This exists separately from FileHeader because on encryption the associated data is needed before the header can be built (the header contains the filename ciphertext, which is itself AEAD-encrypted under this binding).

The variable-length fields (header_length, filename_ciphertext_length, and the filename ciphertext itself) are deliberately excluded: they depend on the filename encryption output, and tampering with them is already detected — a shifted length changes which bytes are interpreted as ciphertext, which fails authentication.

Fields

salt: &'a [u8; 16]

kdf_memory: u32

kdf_iterations: u32

kdf_parallelism: u32

kdf_key_length: u8

content_nonce: &'a [u8; 24]

filename_nonce: &'a [u8; 24]

Implementations

impl<'a> HeaderBinding<'a>

pub fn new( salt: &'a [u8; 16], kdf_params: &KeyDerivationParams, content_nonce: &'a [u8; 24], filename_nonce: &'a [u8; 24], ) -> Self

pub fn aad(&self, purpose: AadPurpose) -> Vec<u8>

Serializes the binding into the associated data for one AEAD operation. Field order mirrors the header serialization.

Trait Implementations

impl<'a> Clone for HeaderBinding<'a>

fn clone(&self) -> HeaderBinding<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for HeaderBinding<'a>

impl<'a> Debug for HeaderBinding<'a>

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

Formats the value using the given formatter.