Abstract: A method of an authentication server may include receiving, from a recipient computer system, recipient metadata comprising recipient information from the recipient computing system and a recipient network address. Access to the encrypted payload is authenticated by the recipient computer system using the recipient metadata. A response is sent to the recipient computer system after authenticating the recipient computer system. The recipient computer system decrypts the encrypted payload to access the payload in response to receiving the response.

Abstract: A method of an authentication server may include receiving, from a recipient computer system, recipient metadata comprising recipient information from the recipient computing system and a recipient network address. Access to the encrypted payload is authenticated by the recipient computer system using the recipient metadata. A response is sent to the recipient computer system after authenticating the recipient computer system. The recipient computer system decrypts the encrypted payload to access the payload in response to receiving the response.

Abstract: In one embodiment, a method of secure network transmission is performed by a computer system. The method includes encrypting a payload via a first symmetric key and encrypting the first symmetric key via a second symmetric key. The method further includes encrypting an author header comprising the encrypted first symmetric key and a recipient list via a third symmetric key, wherein the recipient list comprises at least one recipient. The method also includes encrypting the third symmetric key via a public asymmetric key associated with an authentication server. Furthermore, the method includes transmitting the encrypted author header and the encrypted third symmetric key to the authentication server for use in recipient-initiated pre-access authentication. In addition, the method includes transmitting the encrypted payload and the second symmetric key over a computer network to the at least one recipient.