Struct CaseSessionKeys 

pub struct CaseSessionKeys {
    pub i2r_key: [u8; 16],
    pub r2i_key: [u8; 16],
    pub attestation_challenge: [u8; 16],
}

Symmetric session keys derived by a completed CASE handshake.

Consumed by M5 transport’s AES-CCM cipher wrapper.

Secret hygiene

This type carries live symmetric key material. It implements zeroize::ZeroizeOnDrop so the key bytes are wiped from memory when the value is dropped, and its Debug impl redacts every field (printing CaseSessionKeys { .. }) so key bytes never reach logs. Equality is intentionally not derived: comparing session keys with the variable-time == would be a timing side-channel, and no caller needs it (tests compare individual byte-array fields directly).

Fields

i2r_key: [u8; 16]

Key for encrypting initiator → responder traffic.

r2i_key: [u8; 16]

Key for encrypting responder → initiator traffic.

attestation_challenge: [u8; 16]

Challenge used for the attestation step on the operational session.

Trait Implementations

impl Clone for CaseSessionKeys

fn clone(&self) -> CaseSessionKeys

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CaseSessionKeys

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

Redacts all key material; never prints key bytes.

impl Drop for CaseSessionKeys

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.