Patent ID: 7716483
Filing Date: 2010-05-11
Classification: H04L

Abstract:
1. A method comprising: establishing an encrypted communication by using keys, the encrypted communication between a first electronic device associated with a first trusted authority and a second electronic device associated with a second trusted authority, the establishing including: providing a first identity associated with the first electronic device, a second identity associated with the second electronic device, a further first identity associated with the first trusted authority, and a further second identity associated with the second trusted authority; making a first secret key associated with the first electronic device available to the first electronic device for encrypted communication between the first trusted authority and the first electronic device, said first trusted authority being able to generate the first secret key; making a second secret key available to the second electronic device, the second trusted authority being able to generate the second secret key for encrypted communication between the second trusted authority and the second electronic device; making available the second identity and the further second identity to the first electronic device upon connection of the second electronic device with the first electronic device; transmitting a message by the first electronic device to the first trusted authority, said message containing the second identity and the further second identity, wherein the message is encrypted with the first secret key; generating by the first trusted authority a public key associated with the second electronic device, said public key generated from the received second identity; generating by said first trusted authority a communication key to be used in a communication between said first electronic device and said second electronic device; sending by the first trusted authority a first message to the first electronic device, said first message containing the communication key, wherein the first message is encrypted with the first secret key; and sending by the first trusted authority a second message, different than the first message, to the second electronic device, said second message containing the communication key, wherein the second message is encrypted with the public key associated with the second device; wherein the second electronic device is not associated with the first trusted authority and the first electronic device is not associated with the second trusted authority and the second trusted authority is distinct and autonomous with respect to the first trusted authority.