Function new_recipient 

pub fn new_recipient<K: Kem, D: Kdf, A: Aead>(
    mode: &Mode<'_>,
    recipient_secret_key: &K::SecretKey,
    encapped_key: &K::EncappedKey,
    info: &[u8],
) -> Result<RecipientContext<A, D>, HpkeError>

Sets up a recipient context (draft-ietf-hpke-hpke-05 Section 5.1).

Errors

• HpkeError::DecapError when the encapsulated key is invalid or the key exchange fails.
• HpkeError::ValidationError when the pre-shared key or its identifier is empty in a pre-shared key mode.