| CPC H04L 9/0847 (2013.01) [H04L 9/0869 (2013.01); H04L 9/0894 (2013.01); H04L 9/30 (2013.01); H04L 9/3236 (2013.01)] | 14 Claims |
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1. A method comprising:
accessing a plurality of impression events and a plurality of conversion events;
for each impression event and each conversion event, wherein each impression event and each conversion event are associated with user identifiers:
generating a hashed user identifier based on the associated user identifier;
initiating a key agreement protocol comprising a key, initiating the key agreement protocol comprising:
generating, by a first entity of the plurality of entities, a random key;
encrypting the random key using a second public key for a second entity of the plurality of entities; and
transmitting the encrypted random key to the second entity:
generating an encrypted identifier by encrypting the hashed user identifier with the key; and
storing the encrypted identifier,
identifying a conversion event associated with the encrypted identifier:
accessing a set of impression events associated with the identified conversion event, wherein each impression event in the set of impression events is attributed to a plurality of entities; and
for the first entity in the plurality of entities, determining a count representing a number of impression events attributed to the first entity.
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