KEM

KEM, or Key Encapsulation Mechanism, is a method used in secure digital communication to exchange cryptographic keys safely over an insecure channel. It involves two main steps: first, a sender uses a mathematical process to generate a temporary, encrypted key (encapsulation) and sends it to the receiver. Then, the receiver uses their private key to decrypt and retrieve the same secret key. This shared key is used to encrypt subsequent messages, ensuring confidentiality. Essentially, KEM allows two parties to establish a secret key securely without exposing it to potential eavesdroppers during transmission.