Patent ID: 8437475

Claim:
A method of cryptographic synchronization between a transmitting end and a receiving end, the method comprising the steps of: obtaining a first transmitter value and a plurality of second transmitter values, the first transmitted value being associated with a plurality of data and the second transmitter values being associated with corresponding portions of the data; encrypting the data portions to produce encrypted data portions, the encryption of the data portions being based on the first transmitter value and corresponding ones of the second transmitter values; communicating one or more of the encrypted data portions, to the receiving end according to a first communications protocol, the first communications protocol being associated with a first quality of service; selecting one of the encrypted data portions; and communicating the selected encrypted data portion and the first transmitter value to the receiving end according to a second communications protocol, the second communications protocol being associated with a second quality of service that differs from the first quality of service, wherein the receiving end synchronizes with the transmitting end based on the selected encrypted data portion and the first transmitter value.