Struct SFrameEncryptor 

pub struct SFrameEncryptor { /* private fields */ }

Stateful per-sender SFrame encryptor handle.

Cloning a handle, or requesting another one for the same (epoch, leaf_index) via crate::SFrameSession::encryptor, shares the same underlying counter - it does not create an independent one. This makes it safe to hold multiple handles (e.g. one per thread) for the same sender without risking AEAD nonce reuse.

Implementations

impl SFrameEncryptor

pub fn encrypt( &mut self, plaintext: &[u8], extra_aad: &[u8], ) -> Result<Vec<u8>, SFrameError>

Encrypts plaintext and returns the complete SFrame payload: header ‖ ciphertext ‖ GCM-tag.

extra_aad is bound into the AEAD tag (e.g. an RTP header) but is not carried in the returned payload; the receiver supplies the same slice to SFrameDecryptor::decrypt.

Safe to call concurrently from multiple handles sharing this sender’s state: the counter is allocated under a lock, so concurrent calls never allocate the same value twice.

pub fn counter(&self) -> u64

Current counter value (number of frames encrypted so far).

pub fn kid(&self) -> u64

KID this encryptor was created for.

Trait Implementations

impl Clone for SFrameEncryptor

fn clone(&self) -> SFrameEncryptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.