Function hpke::single_shot_seal

pub fn single_shot_seal<A, Kdf, Kem, R>(
    mode: &OpModeS<Kem::Kex>, 
    pk_recip: &<Kem::Kex as KeyExchange>::PublicKey, 
    info: &[u8], 
    plaintext: &mut [u8], 
    aad: &[u8], 
    csprng: &mut R
) -> Result<(EncappedKey<Kem::Kex>, AeadTag<A>), HpkeError> where
    A: Aead,
    Kdf: KdfTrait,
    Kem: KemTrait,
    R: CryptoRng + RngCore, 

Does a setup_sender and AeadCtx::seal in one shot. That is, it does a key encapsulation to the specified recipient and encrypts the provided plaintext in place. See setup::setup_sender and AeadCtx::seal for more detail.

Return Value

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