Registered Matchmaking Encryption

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Danilo Francati, Valeria Huang, Daniele Venturi

Published: 2025, Last Modified: 11 Sept 2025ACNS (1) 2025EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Matchmaking encryption (ME) is a generalization of attribute-based encryption (ABE) in which both the sender and the receiver (each with their own attributes) can specify access policies the other party must satisfy in order for the message to be revealed. Security guarantees that during decryption nothing is leaked beyond the fact whether a match occurred or not. Similarly to ABE, ME requires a trusted key generation center (KGC) that can potentially decrypt all ciphertexts.