Function rcmixed::encrypt_public_key::encrypt

pub fn encrypt<P: PublicKeyAlgorithm, S: SymmetricAlgorithm, H: HashAlgorithm, I: SignatureAlgorithm>(
    plaintext: Vec<u8>, 
    receiver_pk: &P::PublicKey, 
    self_sk: &I::SignKey
) -> Result<Vec<u8>, ()>