In an age when digital exchanges risk exposure to criminal and state actors, the challenge of sending information so that it stays hidden from everyone except the intended recipient, while also hiding who is speaking to whom, takes on increasing importance. A paper titled “Identity-Based Matchmaking Encryption with Enhanced Privacy Against Chosen-Ciphertext Attacks,” by Sohto Chiku, Keitaro Hashimoto, Keisuke Hara, and Junji Shikata, addresses this challenge directly by developing improved meth
