All of the information on asymmetric encryption I can find uses key-exchanging to get a mutual symmetric key.
What I am trying to do is encrypt a message with a public key and have it only readable by someone with the private key. I don't even want the sender to be able to read it after it's been encrypted. I don't care about the identity of the sender, only that if someone compromises the sender's computer, they can't derive a symmetric key and decrypt what was previously sent.
Is this possible?