Blackberry Corporation

John Andrew McGregor

Tu Dien Do

Scott Gammon

Douglas Heath Patriarche

A token used when a first device authenticates itself to a third device may be associated with a token issue timestamp. Upon receipt of an indication that all previously issued tokens are to be revoked, a second device may store a revocation timestamp. Upon receiving, from the second device, a request for establishing conditions for a file transfer, from the first device, and an indication of a token issue timestamp associated with the request, the second device may compare the token issue timestamp to the revocation timestamp. Responsive to determining, based on the comparing, that the token issue timestamp precedes the revocation timestamp, the second device may deny the request.

Timestamp-based token revocation

A method, apparatus, and system for managing load in a server are provided. The server performs events for a plurality of electronic communication devices, each of the devices enabled to transmit to the server, at a respective given time and at a respective given frequency, a request to perform a respective event. The server receives the requests and determines that its load is above a threshold load value during a given time period when the requests arrive. In response, for a subset of the devices, the server transmits a delay time to each electronic communication device in the subset. The delay time causes each device in the subset to change the respective given time to a respective new time comprising the delay time added to the respective given time such that a next request is transmitted from each device in the subset to the server at the respective new time.

Growing community of inventors

Ottawa, Canada

John Andrew McGregor