Patent ID: 8885824
Filing Date: 2014-11-11
Classification: H04L,H04N

Abstract:
1. A method comprising: accepting an output of a surveillance device; encrypting at least a part of the output of the surveillance device with a level-one encryption key whose decryption key is inaccessible by a level-one encryption entity, said encrypting at least a part of the output of the surveillance device with a level-one encryption key associatable with one or more data of level-one encryption circuitry; transmitting a level-one encrypted output of the surveillance device; receiving the level-one encrypted output of the surveillance device; encrypting at least a part of the level-one encrypted output of the surveillance device with a level-two encryption key whose decryption key is inaccessible by a level-two encryption entity, said encrypting at least a part of the level-one encrypted output of the surveillance device with a level-two encryption key associatable with one or more data of level-two encryption circuitry; transmitting a level-two encrypted output of the surveillance device; receiving the level-two encrypted output of the surveillance device; storing the level-two encrypted output of the surveillance device in association with a surveillance device identifier in a form inaccessible by a pre-event repository; transmitting the level-two encrypted output of the surveillance device in response to a query containing at least a part of the surveillance device identifier in the form inaccessible by the pre-event repository; receiving the level-two encrypted output of the surveillance device; decrypting at least a part of the level-two encrypted output of the surveillance device with a level-two decryption key inaccessible by the level-two encryption entity, said decrypting at least a part of the level-two encrypted output of the surveillance device with a level-two decryption key associatable with one or more data of level-two decryption circuitry; transmitting a level-one encrypted output of the surveillance device that is a result of said decrypting at least a part of the level-two encrypted output of the surveillance device with a level-two decryption key inaccessible by the level-two encryption entity; receiving the level-one encrypted output of the surveillance device; decrypting at least a part of the level-one encrypted output of the surveillance device with a level-one decryption key inaccessible by a level-one encryption entity, said decrypting at least a part of the level-one encrypted output of the surveillance device with a level-one decryption key associatable with one or more data of level-one decryption circuitry; and presenting an unencrypted output of the surveillance device.