US Patent 11063914 Secure end-to-end communication system

A secure end-to-end communication system is implemented via one or more security processing devices. In one embodiment, a method includes: loading, by a key manager, a first set of keys into a security device; encrypting first data with the first set of keys using the security device; and sending, over a network, the encrypted first data to an external site or a mobile device. The method may further include: requesting the encrypted data from the external site or mobile device; receiving, over the network, the encrypted first data; and decrypting the received encrypted first data with the first set of keys using the security device.