Patent ID: 9749318
Date: 2017-08-29
CPC Classifications: H04L

Claim:
1. A method of key management at an initiator device for use in a communication network, the method comprising: sending from the initiator device to a Key Management Server a request for a key and a ticket; receiving at the initiator device the requested key and ticket from the Key Management Server, the ticket including the key or a reference to a copy of the key; sending a request to establish communication from the initiator device to multiple different recipient devices as a forked communication invitation, the request including the ticket, the ticket being resolvable into different device-unique keys for different ones of the recipient devices that request resolution of the ticket; obtaining at the initiator device a modifying parameter based on which the same or a different Key Management Server has or will resolve the ticket into a device-unique key for a particular one of the recipient devices; at the initiator device, generating the device-unique key for the particular one of the recipient devices based on the modifying parameter; and engaging in a communication invited by the forked communication invitation with the particular one of the recipient devices, including using the device-unique key for authentication or secure communication with the particular one of the recipient devices.