Patent ID: 8325925
Filing Date: 2012-12-04
Classification: H04M,H04W

Abstract:
1. A mobile device for receiving a collect message, comprising: a processor; a receiver device communicatively coupled to the processor; a transmitter device communicatively coupled to the processor; and a memory communicatively coupled to the processor and arranged to store a set of instructions which, when executed by the processor, cause the processor to: store in the memory at least a portion of a collect message received via the receiver device from a key server wherein the collect message comprises an encrypted portion; transmit, subsequent to receipt of the collect message, a signal comprising at least one of a key request message and a rejection message; and receive a stored key from the key server responsive to the key request message, wherein the key decrypts the encrypted portion, wherein the key server, prior to sending the collect message to the mobile device, receives the collect message from a sender mobile device, encrypts the collect message using the stored key wherein the stored key is specific to the collect message, and the stored key specific to the encrypted message is received in a key signal from the sender mobile device or is determined from a key set stored at the key server.