Function hpke::single_shot_open

pub fn single_shot_open<A, Kdf, Kem>(
    mode: &OpModeR<Kem::Kex>, 
    sk_recip: &<Kem::Kex as KeyExchange>::PrivateKey, 
    encapped_key: &EncappedKey<Kem::Kex>, 
    info: &[u8], 
    ciphertext: &mut [u8], 
    aad: &[u8], 
    tag: &AeadTag<A>
) -> Result<(), HpkeError> where
    A: Aead,
    Kdf: KdfTrait,
    Kem: KemTrait, 

Does a setup_receiver and AeadCtx::open in one shot. That is, it does a key decapsulation for the specified recipient and decrypts the provided plaintext in place. See setup::setup_reciever and AeadCtx::open for more detail.

Return Value

Returns Ok() on success. If an error happened during key exchange, returns Err(HpkeError::InvalidKeyExchange). If an unspecified error happened during decryption, returns Err(HpkeError::Encryption). In this case, the contents of ciphertext is undefined.