Struct ExportOnly 

pub struct ExportOnly;

Export-Only pseudo-AEAD (AEAD id 0xffff).

Ciphersuites using this “AEAD” can only derive secrets through SenderContext::export and RecipientContext::export; Aead::seal and Aead::open return HpkeError::NotSupported.

The [crypto::Aead] implementation below only exists to satisfy the Aead supertrait bound and must not be called directly: HPKE never invokes it, and it does not perform any encryption.

Trait Implementations

impl Aead for ExportOnly

const KEY_SIZE: usize = 0

const TAG_SIZE: usize = 0

const NONCE_SIZE: usize = 0

fn encrypt_in_place( &self, _in_out: &mut [u8], _nonce: &[u8], _associated_data: &[u8], ) -> Hash

fn decrypt_in_place( &self, _in_out: &mut [u8], _nonce: &[u8], _associated_data: &[u8], _tag: &[u8], ) -> Result<(), AeadError>

fn encrypt(&self, plaintext: &[u8], nonce: &[u8], aad: &[u8]) -> Vec<u8>

fn decrypt( &self, ciphertext: &[u8], nonce: &[u8], aad: &[u8], ) -> Result<Vec<u8>, AeadError>

impl Aead for ExportOnly

const HPKE_AEAD_ID: u16 = 0xffff

The HPKE AEAD identifier (draft-ietf-hpke-hpke-05 Section 7.3, IANA “HPKE AEAD Identifiers”), used to build the ciphersuite suite_id.

const MAX_PLAINTEXT_SIZE: u64 = 0

Maximum length, in bytes, of a plaintext passed to Aead::seal, i.e. P_MAX ([RFC 5116]).

const MAX_CIPHERTEXT_SIZE: u64 = 0

Maximum length, in bytes, of a ciphertext passed to Aead::open, i.e. C_MAX ([RFC 5116]).

fn new(key: &[u8]) -> Result<Self, HpkeError>

Instantiates the cipher from KEY_SIZE raw key bytes, as produced by the HPKE key schedule.

fn seal( &self, _in_out: &mut [u8], _nonce: &[u8], _associated_data: &[u8], ) -> Result<Hash, HpkeError>

Encrypts in_out in place and returns the detached authentication tag, forwarding to [crypto::Aead::encrypt_in_place].

fn open( &self, _in_out: &mut [u8], _nonce: &[u8], _associated_data: &[u8], _tag: &[u8], ) -> Result<(), HpkeError>

Decrypts in_out in place using the detached authentication tag, forwarding to [crypto::Aead::decrypt_in_place].

impl Clone for ExportOnly

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ExportOnly

impl Debug for ExportOnly

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

Formats the value using the given formatter.

impl Eq for ExportOnly

impl PartialEq for ExportOnly

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExportOnly