This document describes a digital component deduplication system for generating packetized data with encryption tokens for transmittal over one or more packetized networks. A packetized data search determines that an encryption token is included with the packetized data. The encryption token includes keyed data representing a first digital component. The packetized data search engine searches the keyed database to identify contents, in the keyed database, of one or more entries that includes the keyed data representing the first digital component. A list of candidate digital components is generated. For candidate digital components associated with a data interface for requesting an eligibility value from a second client device associated with the candidate digital component, a security server generates, using the data interface, additional packetized data comprising i) a request for the eligibility value from the second client device, and ii) the encryption token.