Patent ID: 8831272
Filing Date: 2014-09-09
Classification: G06F,G06T,H04L,H04N

Abstract:
1. A system for identifying a content item, comprising: an input for receiving: a received first identifier of the content item, the received first identifier being based on at least part of a baseband level representation of the content item; a received second identifier of the content item, the received second identifier being based on at least part of an encoded representation of the content item; and the at least part of the encoded representation of the content item, wherein the input is arranged for receiving a signed message comprising the received first identifier and the received second identifier; the system further comprising: a second identifier generator for generating a generated second identifier based on the at least part of the encoded representation of the content item; a validation unit for validating the received first identifier as a valid first identifier of the content item if the generated second identifier matches the received second identifier; a non-transitory memory device for storing at least one of the identifiers a signature generator for digitally signing the message; and a signature handler for validating a signature of the signed message.