Real-time Asset Tracking using Discovery Services

A computer-implemented method of sharing data in a supply chain, the data corresponding to an item having a tag associated therewith, the method comprising:

• receiving at least one of a key and a semi-public key from a second party;
• identifying a public key associated with the second party;
• generating a query based on a random number, the random number being unique to the item;
• transmitting the query over a network to a third party;
• receiving, from the third party, one or more tuples identified by the third party based on the query, each tuple of the one or more tuple comprising respective encrypted endpoint data;
• decrypting the encrypted endpoint data based on at least one of the key and the semi-public key to provide endpoint data.

A system for sharing data in a supply chain, the data corresponding to an item having a tag associated therewith, the system comprising:

• one or more computers;
• and
• a computer-readable medium coupled to the one or more computers having instructions stored thereon which, when executed by the one or more computers, cause the one or more computers to perform operations comprising:
• storing item-level data in a computer-readable repository;
• determining endpoint data associated with the item-level data, the endpoint data indicating a location of the item-level data;
• determining a random number from the tag, the random number being unique to the item;
• selecting a first integer and a second integer;
• generating a first public key based on the first integer and a semi-public key based on the second integer;
• generating an identifier based on the first public key and the random number;
• generating a key based on the semi-public key and the random number;
• encrypting the endpoint data using the key to provide encrypted endpoint data;
• defining a tuple comprising the identifier and the encrypted endpoint data;
• and
• transmitting the tuple over a network for storage in a persistent storage device.