Double-Blind Matching Algorithm
ETD is a forerunner in double-blind matching technology to address data security concerns in distributed computing and big data applications. Because each node only possesses some nodes' dispersed data, the calculation/index can only be derived from the data it sees. All nodes must execute coordinated actions to solve the matching problem. Simultaneously, as an intermediary computer node, the auxiliary computing node is bidirectionally encrypted (double-blind) for the data of the matching parties. CPCB (commutatively encrypted calculation PCB, Commutative PCB) is the double-blind data PCB, and the consensus verification technique employs asymmetrical group key broadcasting encryption.