Method and system for reducing a collision probability of hash-based names using a publisher identifier

A non-transitory computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method, the method comprising:

• receiving an Interest for a Content Object, wherein the Interest includes a location-independent name prefix associated with a content producer that hosts the Content Object, a Content Object Hash value that specifies a hash of the Content Object, and a Publisher ID associated with a publisher of the Content Object;
• generating an entry for the Content Object in a Pending Interest Table (PIT), wherein the entry maps the Content Object Hash value and Publisher ID of the Interest to an interface of the computer from which the Interest was received;
• in response to receiving a Content Object:
• computing a hash value for the Content Object;
• and
• obtaining a Publisher ID from the Content Object;
• and
• in response to determining that the computed hash value matches the Content Object Hash value in the PIT entry and that the Content Object's Publisher ID matches the Publisher ID of the PIT entry, forwarding the received Content Object via the interface specified in the PIT entry.

An apparatus, comprising:

• a processor;
• a memory;
• a communication module operable to receive an Interest for a Content Object, wherein the Interest includes a location-independent name prefix associated with a content producer that hosts the Content Object, a Content Object Hash value that specifies a hash of the Content Object, and a Publisher ID associated with a publisher of the Content Object;
• an Interest-processing module operable to generate an entry for the Content Object in a Pending Interest Table (PIT), wherein the entry maps the Content Object Hash value and Publisher ID of the Interest to an interface of the computer from which the Interest was received;
• and
• a Content-Object-processing module operable to determine whether a hash of a received Content Object matches the Content Object Hash value in the PIT entry, and whether the Content Object's Publisher ID matches the Publisher ID of the PIT entry;
• and
• a packet-forwarding module operable to, in response to the Content Object's hash value and Publisher ID matching the Content Object Hash and Publisher ID of the PIT entry, forward the received Content Object via the interface specified in the PIT entry.