A method to secure file origination, access and updates between a sender and a receiver is provided. The method includes generating a transmit payload to transmit to the receiver, generating an authentication data structure to transmit to the receiver, generating a permissions credential to transmit to the receiver, creating a scrambled message by combining and transforming the transmit payload, the authentication data structure, and the permissions credential, using a pre-determined scheme, transmitting the scrambled message to the receiver, receiving the scrambled message, applying the pre-determined scheme to recover a received payload, a received authentication data structure, and a received permissions credential, from the scrambled message, evaluating the received authentication data structure, and if authentication fails, ignoring the received payload, evaluating the received permissions credential, and if the received permissions credentials are insufficient, ignoring the received payload, and performing steps (a.)-(k.) for subsequent communications between the sender and the receiver.