Patent ID: 8223970

Claim:
A communication system, comprising: a first electronic device associated with a first trusted authority; and a second electronic device associated with a second trusted authority adapted to communicate with the first electronic device, wherein: the first and second electronic devices form a common entity configured to receive an encrypted message and decryption information, the encrypted message being sent to the common entity; the first electronic device is configured to generate a first decryption token based at least in part on the decryption information and to provide the first decryption token to the second electronic device; the second electronic device is configured to generate a second decryption token based at least in part on the decryption information and to provide the second decryption token to the first electronic device; and wherein the common entity is configured to generate a joint decryption key to decrypt the encrypted message based at least in part on the first and second decryption tokens, and wherein the second trusted authority is distinct and autonomous with respect to the first trusted authority.