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Keeping text messages secure from hackers is crucial, but the government sometimes needs access for investigations, leading to privacy concerns. Text messages are protected through end-to-end encryption, which activates when sending secure messages from smartphones. Each phone uses two unique keys: a public key, shared with others for encryption, and a private key, kept secret on the device. When two individuals want to chat securely, they combine their public and private keys to generate a temporary shared key for communication. For example, Allyson sends a message to Bob, triggering a public key exchange that enables secure messaging between them.