Patent ID: 8078869

Claim:
A system of protecting data on a communication device having a first operational state and a second operational state, comprising: a key store configured to store a plurality of cryptographic keys; a memory configured to store data; a wireless receiver; and a data protection system configured to receive data via the wireless receiver of the communication device, to determine whether the communication device is in the first operational state or the second operational state, to encrypt the received data using a first cryptographic key of the plurality of cryptographic keys if the communication device is in the first operational state or a second cryptographic key of the plurality of cryptographic keys if the communication device is in the second operational state as the data is received at the communication device and before the data is stored in the memory, and to store the encrypted received data in the memory; wherein the first of the plurality of cryptographic keys is protected such that in the first operational state, the first of the plurality of cryptographic keys is accessible, and in the second operational state, the first of the plurality of cryptographic keys is inaccessible; and wherein the data protection system is further configured to determine whether the received data is related to existing data stored in the memory, and to append the encrypted received data to the existing related data in the memory if the received data is related to existing data.