US 12,326,849 B2
Techniques for delegated inter-party private set intersection
Sandra Servia Rodriguez, Cambridge (GB); Calin-Bogdan Miron, Nottingham (GB); and Marian Radu, Bucharest (RO)
Assigned to CrowdStrike, Inc., Sunnyvale, CA (US)
Filed by CrowdStrike, Inc., Sunnyvale, CA (US)
Filed on Jul. 25, 2023, as Appl. No. 18/358,728.
Prior Publication US 2025/0036611 A1, Jan. 30, 2025
Int. Cl. G06F 16/23 (2019.01); G06F 21/62 (2013.01)
CPC G06F 16/23 (2019.01) [G06F 21/6245 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, at a third computing device, a first plurality of transformed data elements from a first computing device, the first plurality of transformed data elements representing a transform by a pseudorandom function of a first plurality of data elements;
receiving, at the third computing device, a second plurality of transformed data elements from a second computing device, the second plurality of transformed data elements representing a transform by the pseudorandom function of a second plurality of data elements, wherein an identity of the first computing device is unknown to the second computing device and an identity of the second computing device is unknown to the first computing device; and
transmitting, by a processing device executing on the third computing device to the first computing device and the second computing device, an indication of a subset of transformed data elements that are present in both the first plurality of transformed data elements and the second plurality of transformed data elements.